{"id":30229,"date":"2023-09-27T02:57:31","date_gmt":"2024-03-09T17:49:33","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%85%b3%e4%ba%8ephp%e7%9a%84%e7%b1%bb%e5%9e%8b\/"},"modified":"2025-08-12T18:12:27","modified_gmt":"2025-08-12T10:12:27","slug":"%e5%85%b3%e4%ba%8ephp%e7%9a%84%e7%b1%bb%e5%9e%8b","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%85%b3%e4%ba%8ephp%e7%9a%84%e7%b1%bb%e5%9e%8b\/","title":{"rendered":"\u5173\u4e8ePHP\u7684\u7c7b\u578b"},"content":{"rendered":"<h2>\u6211\u81ea\u5df1\u4ecb\u7ecd\u4e00\u4e0b\u3002\u4f60\u597d\uff0c\u6211\u662f\u65e5\u672c\u7cfb\u7edf\u5f00\u53d1\u682a\u5f0f\u4f1a\u793e\u7684\u85e4\u4e95\u3002<br \/>\n\u5728\u5de5\u4f5c\u4e2d\u7ecf\u5e38\u4f7f\u7528PHP\uff0c\u6211\u5728\u52aa\u529b\u5b66\u4e60\uff0c\u5e76\u5c06\u6709\u7528\u7684\u5185\u5bb9\u6574\u7406\u6210\u6587\u7ae0\u3002<br \/>\n\u8fd9\u4e9b\u6587\u7ae0\u7684\u5185\u5bb9\u5927\u90e8\u5206\u90fd\u53ef\u4ee5\u5728php.net\u4e0a\u627e\u5230\uff0c\u4f46\u5982\u679c\u4f60\u89c9\u5f97\u9605\u8bfb\u6587\u6863\u5f88\u9ebb\u70e6\uff0c<br \/>\n\u8bf7\u4e00\u5b9a\u5229\u7528\u8fd9\u7bc7\u6587\u7ae0\u3002<\/p>\n<h2>\u6458\u8981<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u5404\u578b\u306e\u7279\u5fb4\u3001\u578b\u306e\u76f8\u4e92\u5909\u63db\u306b\u3064\u3044\u3066\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u3053\u306e\u8a18\u4e8b\u306e\u30b3\u30fc\u30c9\u306fPHP8.0\u3067\u5b9f\u884c\u3057\u3066\u3044\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u3069\u306eOS\u3067\u3082PHP\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308c\u3070\u5b9f\u884c\u3067\u304d\u308b\u5185\u5bb9\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/ul>\n<h2>\u57fa\u672c\u5f62\u5f0f\u5b58\u50a8\u4e00\u4e2a\u503c\u7684\u56db\u79cd\u6807\u91cf\u7c7b\u578b\u3002<\/p>\n<div>\n<div class=\"post-table\">\u540d\u524d\u8868\u8a18\u6982\u8981\u8ad6\u7406\u5024\u578bbool\u771f\u3001\u507d(true\u3001false)\u3092\u683c\u7d0d\u3059\u308b\u6574\u6570\u578bint\u6574\u6570\u3092\u683c\u7d0d\u3059\u308b\u6d6e\u52d5\u5c0f\u6570\u70b9\u578bfloat(double)\u5c0f\u6570\u3092\u683c\u7d0d\u3059\u308b\u6587\u5b57\u5217\u578bstring\u6587\u5b57\u5217\u3092\u683c\u7d0d\u3059\u308b\u5305\u542b\u56db\u4e2a\u4e0d\u540c\u7c7b\u578b\u7684\u590d\u5408\u578b\uff08\u53ef\u4ee5\u5b58\u50a8\u4e00\u4e2a\u4ee5\u4e0a\u590d\u5408\u578b\u503c\u7684\u6807\u91cf\u578b\uff09\u3002<\/p>\n<div>\n<div class=\"post-table\">\u540d\u524d\u8868\u8a18\u6982\u8981\u914d\u5217array\u5404\u5024\u3092\u7279\u5b9a\u306e\u60c5\u5831(\u6587\u5b57\u5217\u306a\u3069)\u306b\u7d10\u3065\u3051\u3066\u683c\u7d0d\u3059\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8object\u5404\u5024\u3068\u52d5\u4f5c\u3092\u683c\u7d0d\u3059\u308b\u547c\u3073\u51fa\u3057\u53ef\u80fdcallable\u547c\u3073\u51fa\u3057\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068\u3092\u8868\u3059\u7e70\u308a\u8fd4\u3057\u53ef\u80fditerable\u7e70\u308a\u8fd4\u3057\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068\u3092\u8868\u3059\u4e24\u79cd\u7279\u6b8a\u7c7b\u578b<\/p>\n<div>\n<div class=\"post-table\">\u540d\u524d\u8868\u8a18\u6982\u8981\u30ea\u30bd\u30fc\u30b9resourcephp\u5916\u90e8\u306e\u30c7\u30fc\u30bf\u3092\u7ba1\u7406\u3059\u308b\u30cc\u30ebNULL(null)\u5024\u304c\u5b58\u5728\u3057\u306a\u3044\u3053\u3068\u3092\u8868\u3059<\/p>\n<h2>\u5bf9\u5404\u79cd\u7c7b\u578b\u8fdb\u884c\u89e3\u91ca\u9488\u5bf9\u6bcf\u79cd\u7c7b\u578b\uff0c\u5c06\u63d0\u4f9b\u8bf4\u660e\u548c\u4ee3\u7801\u793a\u4f8b\u3002<br \/>\n\u4ee3\u7801\u793a\u4f8b\u662f\u5728php -a\u7684\u4ea4\u4e92\u6a21\u5f0f\u4e0b\u6267\u884c\u7684\u3002<br \/>\n\u4ee3\u7801\u793a\u4f8b\u4ee5php &gt;\u5f00\u5934\u7684\u884c\u4e3aphp\u6267\u884c\u4ee3\u7801\uff0c<br \/>\n\u5176\u4ed6\u884c\u4e3a\u524d\u4e00\u884c\u7684\u6267\u884c\u7ed3\u679c\u3002(\u7528\u53cc\u5f15\u53f7\u62ec\u8d77\u6765)<\/p>\n<p>\u53d8\u91cf\u5728\u524d\u9762\u52a0\u4e0a$\u7b26\u53f7\uff0c\u800c\u5e38\u91cf\u5219\u4e0d\u9700\u8981\u3002<\/p>\n<h3>\u5e03\u5c14<\/p>\n<h4>\u89e3\u91ca\u5b58\u50a8\u771f\u6216\u5047\u5176\u4e2d\u4e4b\u4e00\u3002<br \/>\n\u771f\u7528true(TRUE)\u6765\u8868\u793a\uff0c\u5047\u7528false(FALSE)\u6765\u8868\u793a\u3002<br \/>\n\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u3002<\/p>\n<h4>\u4ee3\u7801 (Mandarin Chinese: &#8220;&#8221;)<\/p>\n<pre class=\"post-pre\"><code>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$trueData<\/span> <span class=\"o\">=<\/span> <span class=\"kc\">true<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"nb\">gettype<\/span><span class=\"p\">(<\/span><span class=\"nv\">$trueData<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"boolean\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$falseData<\/span> <span class=\"o\">=<\/span> <span class=\"kc\">false<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"nb\">gettype<\/span><span class=\"p\">(<\/span><span class=\"nv\">$falseData<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"boolean\"<\/span>\r\n<\/code><\/pre>\n<h3>\u8bf7\u7528\u4e2d\u6587\u8fdb\u884c\u672c\u5730\u5316\u89e3\u91ca\u3002<\/p>\n<h4>\u89e3\u91ca\u53ef\u4ee5\u4f7f\u7528\u5341\u8fdb\u5236\u3001\u4e8c\u8fdb\u5236\u3001\u516b\u8fdb\u5236\u3001\u5341\u516d\u8fdb\u5236\u7684\u8868\u793a\u6cd5\u8fdb\u884c\u5b58\u50a8\u3002<br \/>\n\u4e5f\u53ef\u4ee5\u9644\u52a0\u7b26\u53f7\uff08+\u6216-\uff09\u3002<br \/>\n\u4e8c\u8fdb\u5236\u4ee50b\u5f00\u5934\uff0c\u516b\u8fdb\u5236\u4ee50\uff08\u5728php8.1.0\u540e\u4e5f\u53ef\u4ee5\u4f7f\u75280o\uff09\uff0c\u5341\u516d\u8fdb\u5236\u4ee50x\u5f00\u5934\u8fdb\u884c\u8868\u793a\u3002<\/p>\n<p>PHP\u4e0d\u652f\u6301\u65e0\u7b26\u53f7\u6574\u6570\uff0c\u6574\u6570\u7684\u5927\u5c0f\uff08\u5b57\u8282\u6570\uff09\u7531\u5e38\u91cfPHP_INT_SIZE\u786e\u5b9a\uff0c\u6574\u6570\u7684\u6700\u5927\u503c\u7531\u5e38\u91cfPHP_INI_MAX\u5b58\u50a8\uff0c\u6574\u6570\u7684\u6700\u5c0f\u503c\u7531\u5e38\u91cfPHP_INI_MIN\u5b58\u50a8\u3002<\/p>\n<p>\u6700\u5927\u5024\u3001\u6700\u5c0f\u5024\u3092\u8d85\u3048\u305f\u6574\u6570\u3092\u683c\u7d0d\u3057\u305f\u5834\u5408\u3001\u6d6e\u52d5\u5c0f\u6570\u70b9\u578b\u306b\u306a\u308b\u3002<\/p>\n<h4>\u4ee3\u7801 (Mandarin: m\u01ce)<br \/>\n\u6574\u6570\u7684\u5b58\u50a8<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$decimal<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">50<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"s2\">\"\u578b:\"<\/span><span class=\"mf\">.<\/span><span class=\"nb\">gettype<\/span><span class=\"p\">(<\/span><span class=\"nv\">$decimal<\/span><span class=\"p\">),<\/span> <span class=\"s2\">\", \u5024:\"<\/span><span class=\"mf\">.<\/span><span class=\"nv\">$decimal<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"\u578b:integer, \u5024:50\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$binary<\/span> <span class=\"o\">=<\/span> <span class=\"mb\">0b110010<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"s2\">\"\u578b:\"<\/span><span class=\"mf\">.<\/span><span class=\"nb\">gettype<\/span><span class=\"p\">(<\/span><span class=\"nv\">$binary<\/span><span class=\"p\">),<\/span> <span class=\"s2\">\", \u5024:\"<\/span><span class=\"mf\">.<\/span><span class=\"nv\">$binary<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"\u578b:integer, \u5024:50\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$octal<\/span> <span class=\"o\">=<\/span> <span class=\"mo\">062<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"s2\">\"\u578b:\"<\/span><span class=\"mf\">.<\/span><span class=\"nb\">gettype<\/span><span class=\"p\">(<\/span><span class=\"nv\">$octal<\/span><span class=\"p\">),<\/span> <span class=\"s2\">\", \u5024:\"<\/span><span class=\"mf\">.<\/span><span class=\"nv\">$octal<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"\u578b:integer, \u5024:50\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$hexadecimal<\/span> <span class=\"o\">=<\/span> <span class=\"mh\">0x32<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"s2\">\"\u578b:\"<\/span><span class=\"mf\">.<\/span><span class=\"nb\">gettype<\/span><span class=\"p\">(<\/span><span class=\"nv\">$hexadecimal<\/span><span class=\"p\">),<\/span> <span class=\"s2\">\", \u5024:\"<\/span><span class=\"mf\">.<\/span><span class=\"nv\">$hexadecimal<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"\u578b:integer, \u5024:50\"<\/span>\r\n<\/code><\/pre>\n<p>\u6574\u6570\u7684\u5927\u5c0f\u3001\u6700\u5927\u503c\u3001\u6700\u5c0f\u503c<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"s2\">\"\u30b5\u30a4\u30ba:\"<\/span><span class=\"mf\">.<\/span> <span class=\"kc\">PHP_INT_SIZE<\/span> <span class=\"mf\">.<\/span><span class=\"s2\">\"\u30d0\u30a4\u30c8, \"<\/span><span class=\"p\">,<\/span> <span class=\"s2\">\"\u6700\u5927\u5024:\"<\/span><span class=\"mf\">.<\/span> <span class=\"kc\">PHP_INT_MAX<\/span> <span class=\"mf\">.<\/span><span class=\"s2\">\", \"<\/span><span class=\"p\">,<\/span> <span class=\"s2\">\"\u6700\u5c0f\u5024:\"<\/span><span class=\"mf\">.<\/span> <span class=\"kc\">PHP_INT_MIN<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"\u30b5\u30a4\u30ba:8\u30d0\u30a4\u30c8, \u6700\u5927\u5024:9223372036854775807, \u6700\u5c0f\u5024:-9223372036854775808\"<\/span>\r\n<\/code><\/pre>\n<p>\u8d85\u8fc7\u6574\u6570\u7684\u6700\u5927\u503c\u548c\u6700\u5c0f\u503c\u7684\u503c\u5b58\u50a8<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$intBitSize<\/span> <span class=\"o\">=<\/span> <span class=\"kc\">PHP_INT_SIZE<\/span> <span class=\"o\">*<\/span> <span class=\"mi\">8<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$intMax<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">2<\/span> <span class=\"o\">**<\/span> <span class=\"p\">(<\/span><span class=\"nv\">$intBitSize<\/span> <span class=\"o\">-<\/span> <span class=\"mi\">2<\/span><span class=\"p\">)<\/span> <span class=\"o\">+<\/span> <span class=\"p\">(<\/span><span class=\"mi\">2<\/span> <span class=\"o\">**<\/span> <span class=\"p\">(<\/span><span class=\"nv\">$intBitSize<\/span> <span class=\"o\">-<\/span> <span class=\"mi\">2<\/span><span class=\"p\">)<\/span> <span class=\"o\">-<\/span> <span class=\"mi\">1<\/span><span class=\"p\">);<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"s2\">\"\u578b:\"<\/span><span class=\"mf\">.<\/span><span class=\"nb\">gettype<\/span><span class=\"p\">(<\/span><span class=\"nv\">$intMax<\/span><span class=\"p\">),<\/span> <span class=\"s2\">\", \u5024:\"<\/span><span class=\"mf\">.<\/span><span class=\"nv\">$intMax<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"\u578b:integer, \u5024:9223372036854775807\"<\/span> <span class=\"c1\">\/\/ PHP_INT_SIZE\u306b\u3088\u3063\u3066\u5909\u308f\u308a\u307e\u3059<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$intMax<\/span> <span class=\"o\">+=<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"s2\">\"\u578b:\"<\/span><span class=\"mf\">.<\/span><span class=\"nb\">gettype<\/span><span class=\"p\">(<\/span><span class=\"nv\">$intMax<\/span><span class=\"p\">),<\/span> <span class=\"s2\">\", \u5024:\"<\/span><span class=\"mf\">.<\/span><span class=\"nv\">$intMax<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"\u578b:double, \u5024:9.2233720368548E+18\"<\/span> <span class=\"c1\">\/\/ PHP_INT_SIZE\u306b\u3088\u3063\u3066\u5909\u308f\u308a\u307e\u3059<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$intMin<\/span> <span class=\"o\">=<\/span> <span class=\"p\">(<\/span><span class=\"o\">-<\/span><span class=\"mi\">2<\/span><span class=\"p\">)<\/span> <span class=\"o\">**<\/span> <span class=\"p\">(<\/span><span class=\"nv\">$intBitSize<\/span> <span class=\"o\">-<\/span> <span class=\"mi\">1<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/-\u3088\u308a**\u306e\u512a\u5148\u9806\u4f4d\u304c\u9ad8\u3044\u305f\u3081()\u3092\u4f7f\u7528<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"s2\">\"\u578b:\"<\/span><span class=\"mf\">.<\/span><span class=\"nb\">gettype<\/span><span class=\"p\">(<\/span><span class=\"nv\">$intMin<\/span><span class=\"p\">),<\/span> <span class=\"s2\">\", \u5024:\"<\/span><span class=\"mf\">.<\/span><span class=\"nv\">$intMin<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"\u578b:integer, \u5024:-9223372036854775808\"<\/span> <span class=\"c1\">\/\/ PHP_INT_SIZE\u306b\u3088\u3063\u3066\u5909\u308f\u308a\u307e\u3059<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$intMin<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$intMin<\/span> <span class=\"o\">-<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"s2\">\"\u578b:\"<\/span><span class=\"mf\">.<\/span><span class=\"nb\">gettype<\/span><span class=\"p\">(<\/span><span class=\"nv\">$intMin<\/span><span class=\"p\">),<\/span> <span class=\"s2\">\", \u5024:\"<\/span><span class=\"mf\">.<\/span><span class=\"nv\">$intMin<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"\u578b:double, \u5024:-9.2233720368548E+18\"<\/span> <span class=\"c1\">\/\/ PHP_INT_SIZE\u306b\u3088\u3063\u3066\u5909\u308f\u308a\u307e\u3059<\/span>\r\n<\/code><\/pre>\n<h3>float(double)<\/p>\n<h4>\u89e3\u91ca\u5c0f\u6570\u3092\u683c\u7d0d\u3057\u307e\u3059\u3002<br \/>\n\u6307\u6570\u8868\u8a18\u3067\u3082\u683c\u7d0d\u3067\u304d\u307e\u3059\u3002\u6307\u6570\u8868\u8a18\u306e\u5834\u5408\u3001e\u306e\u5f8c\u306b\u7b26\u53f7\u3092\u4ed8\u3051\u3066\u6307\u6570\u3092\u8868\u73fe\u3057\u307e\u3059\u3002<br \/>\ngettype\u306e\u7d50\u679c\u306fdouble\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h4>\u4ee3\u7801 m\u01ce)<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$floatData<\/span> <span class=\"o\">=<\/span> <span class=\"mf\">1.001<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"s2\">\"\u578b:\"<\/span><span class=\"mf\">.<\/span><span class=\"nb\">gettype<\/span><span class=\"p\">(<\/span><span class=\"nv\">$floatData<\/span><span class=\"p\">),<\/span> <span class=\"s2\">\", \u5024:\"<\/span><span class=\"mf\">.<\/span><span class=\"nv\">$floatData<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"\u578b:double, \u5024:1.001\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$exponentPlus<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span><span class=\"n\">e2<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$exponentMinus<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span><span class=\"n\">e<\/span><span class=\"o\">-<\/span><span class=\"mi\">2<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"s2\">\"\u578b:\"<\/span><span class=\"mf\">.<\/span><span class=\"nb\">gettype<\/span><span class=\"p\">(<\/span><span class=\"nv\">$exponentPlus<\/span><span class=\"p\">),<\/span> <span class=\"s2\">\", \u5024:\"<\/span><span class=\"mf\">.<\/span><span class=\"nv\">$exponentPlus<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"\u578b:double, \u5024:100\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"s2\">\"\u578b:\"<\/span><span class=\"mf\">.<\/span><span class=\"nb\">gettype<\/span><span class=\"p\">(<\/span><span class=\"nv\">$exponentMinus<\/span><span class=\"p\">),<\/span> <span class=\"s2\">\", \u5024:\"<\/span><span class=\"mf\">.<\/span><span class=\"nv\">$exponentMinus<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"\u578b:double, \u5024:0.01\"<\/span>\r\n<\/code><\/pre>\n<h3>string<\/p>\n<h4>\u8aac\u660e\u6587\u5b57\u5217\u306f4\u3064\u306e\u65b9\u6cd5\u3067\u683c\u7d0d\u3067\u304d\u307e\u3059\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u5f15\u7528\u7b26<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u4e8c\u91cd\u5f15\u7528\u7b26<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30d2\u30a2\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u69cb\u6587<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Nowdoc\u69cb\u6587<\/ul>\n<p>\u5f15\u7528\u7b26\u306f&#8217;\u3092\u610f\u5473\u3057\u3001&#8217;\u306e\u59cb\u307e\u308a\u304b\u3089\u7d42\u308f\u308a\u307e\u3067\u3092\u6587\u5b57\u5217\u3068\u3057\u3066\u683c\u7d0d\u3057\u307e\u3059\u3002<br \/>\n\u7279\u6b8a\u306a\u52d5\u4f5c\u3068\u3057\u3066\u3001\u6587\u5b57\u5217\u306b&#8217;\u3092\u542b\u3081\u305f\u3044\u5834\u5408\u306f\\\u3067\u30a8\u30b9\u30b1\u30fc\u30d7\u3057\u307e\u3059\u3002(\\&#8217;)<br \/>\n\u540c\u69d8\u306b\u3001\u6587\u5b57\u5217\u306b\\\u3092\u542b\u3081\u305f\u3044\u5834\u5408\u306f\\\u3067\u30a8\u30b9\u30b1\u30fc\u30d7\u3057\u307e\u3059\u3002(\\\\)<br \/>\n\\&#8217;\u3001\\\\\u4ee5\u5916\u306e\\\u306f\u305d\u306e\u307e\u307e\u683c\u7d0d\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u4e8c\u91cd\u5f15\u7528\u7b26\u306f&#8221;\u3092\u610f\u5473\u3057\u3001\u5f15\u7528\u7b26\u3068\u307b\u307c\u540c\u3058\u89e3\u91c8\u3092\u3057\u307e\u3059\u3002<br \/>\n&#8220;\u3001\\\u306f\u540c\u69d8\u306b\u30a8\u30b9\u30b1\u30fc\u30d7\u3092\u5fc5\u8981\u3068\u3057\u3001\u30a8\u30b9\u30b1\u30fc\u30d7\u4ee5\u5916\u306e\\\u306f\u305d\u306e\u307e\u307e\u683c\u7d0d\u3055\u308c\u307e\u3059\u3002<br \/>\n\u8a73\u7d30\u306f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u95b2\u89a7\u304f\u3060\u3055\u3044\u3002<br \/>\n\u6539\u884c\u30b3\u30fc\u30c9\u3001\u6c34\u5e73\u30bf\u30d6\u306a\u3069\u7279\u6b8a\u306a\u89e3\u91c8\u3092\u3059\u308b\u6587\u5b57\u5217\u3082\u5b58\u5728\u3057\u307e\u3059\u3002<\/p>\n<p>\u5f15\u7528\u7b26\u548c\u53cc\u5f15\u53f7\u90fd\u53ef\u4ee5\u5b58\u50a8\u591a\u884c\u5b57\u7b26\u4e32\u3002\uff08\u5b58\u50a8\u4ece\u5f15\u7528\u7b26\u6216\u53cc\u5f15\u53f7\u5f00\u59cb\u5230\u7ed3\u675f\u7684\u90e8\u5206\u3002\uff09<\/p>\n<p>\u30d2\u30a2\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u69cb\u6587\u306f\u3001&lt;&lt;&lt;ID\u306e\u5f62\u5f0f\u3067\u8a18\u8ff0\u3057\u307e\u3059\u3002<br \/>\n&#8220;`&lt;&lt;&lt;`\u4ee5\u5f8c\u306e\u6587\u5b57\u5217\u304c\u7d42\u7aefID\u3068\u306a\u308a\u3001\u7d42\u7aefID\u307e\u3067\u306e\u3059\u3079\u3066\u306e\u6587\u5b57\u5217\u3092\u683c\u7d0d\u3057\u307e\u3059\u3002<br \/>\n\u6587\u5b57\u5217\u306e\u89e3\u91c8\u306f\u4e8c\u91cd\u5f15\u7528\u7b26\u3068\u540c\u69d8\u3067\u3059\u3002<\/p>\n<p>Nowdoc\u69cb\u6587\u306f\u3001&lt;&lt;&lt;&#8216;ID&#8217;\u306e\u5f62\u5f0f\u3067\u8a18\u8ff0\u3057\u307e\u3059\u3002<br \/>\n\u69cb\u6587\u306f\u7d42\u7aefID\u3092\u5f15\u7528\u7b26\u3067\u56f2\u3080\u3053\u3068\u4ee5\u5916\u540c\u3058\u3067\u3059\u304c\u3001\u6587\u5b57\u5217\u3092\u89e3\u91c8\u3057\u307e\u305b\u3093\u3002<br \/>\n\u3064\u307e\u308a\u3001\\\\\u306f\u305d\u306e\u307e\u307e\\\\\u3068\u3057\u3066\u683c\u7d0d\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u5728\u4e2d\u6587\u4e2d\u6709\u4e24\u79cd\u65b9\u6cd5\u53ef\u4ee5\u89e3\u91ca\u5b57\u7b26\u4e32\u5185\u7684\u53d8\u91cf\uff1a\u53cc\u5f15\u53f7\u548cHere Document\u8bed\u6cd5\u3002<\/p>\n<h4>\u4ee3\u7801 (daima)<br \/>\n\u5f15\u53f7<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$aiueo<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'aiueo'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"nv\">$aiueo<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"aiueo\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$escSinglequote<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'I\\'m human.'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"nv\">$escSinglequote<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"I'm human.\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$escBackslash<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'C:\\\\Program Files'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"nv\">$escBackslash<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"C:\\Program Files\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$notEscBackslash<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'C:\\Program Files'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"nv\">$notEscBackslash<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"C:\\Program Files\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$multiLine<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'aiueo\r\nphp &gt; kakikukeko'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"nv\">$multiLine<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"aiueo\r\nkakikukeko\"<\/span>\r\n<\/code><\/pre>\n<p>\u53cc\u5f15\u53f7<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$aiueo<\/span> <span class=\"o\">=<\/span> <span class=\"s2\">\"aiueo\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"nv\">$aiueo<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"aiueo\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$escDoublequote<\/span> <span class=\"o\">=<\/span> <span class=\"s2\">\"<\/span><span class=\"se\">\\\"<\/span><span class=\"s2\"> is double quotation mark.\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"nv\">$escDoublequote<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s1\">'\" is double quotation mark.'<\/span>\r\n<\/code><\/pre>\n<p>Here is one option to paraphrase the given phrase in Chinese:<br \/>\n\u591a\u884c\u5b57\u7b26\u4e32\u8bed\u6cd5<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$heredoc<\/span> <span class=\"o\">=<\/span> <span class=\"o\">&lt;&lt;&lt;<\/span><span class=\"no\">EOF<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"n\">a<\/span>  <span class=\"n\">i<\/span>  <span class=\"n\">u<\/span>  <span class=\"n\">e<\/span>  <span class=\"n\">o<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"n\">ka<\/span> <span class=\"n\">ki<\/span> <span class=\"n\">ku<\/span> <span class=\"n\">ke<\/span> <span class=\"n\">ko<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"no\">EOF<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"nv\">$heredoc<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"a  i  u  e  o\r\nka ki ku ke ko\"<\/span>\r\n<\/code><\/pre>\n<p>\u65b0\u6587\u6863\u7ed3\u6784<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$newdoc<\/span> <span class=\"o\">=<\/span> <span class=\"o\">&lt;&lt;&lt;<\/span><span class=\"s1\">'EOF'<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"mi\">1<\/span> <span class=\"mi\">2<\/span> <span class=\"mi\">3<\/span> <span class=\"mi\">4<\/span> <span class=\"mi\">5<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"n\">a<\/span> <span class=\"n\">b<\/span> <span class=\"n\">c<\/span> <span class=\"n\">d<\/span> <span class=\"n\">e<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"no\">EOF<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"nv\">$newdoc<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"1 2 3 4 5\r\na b c d e\"<\/span>\r\n<\/code><\/pre>\n<p>\u53d8\u91cf\u7684\u89e3\u91ca de<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$dayOfWeek<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'\u6c34\u66dc\u65e5'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$parseVariable<\/span> <span class=\"o\">=<\/span> <span class=\"s2\">\"\u4eca\u65e5\u306f${dayOfWeek}\u3067\u3059\u3002\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"nv\">$parseVariable<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"\u4eca\u65e5\u306f\u6c34\u66dc\u65e5\u3067\u3059\u3002\"<\/span>\r\n<\/code><\/pre>\n<h3>array<\/p>\n<h4>\u89e3\u91ca\u8fd9\u662f\u4e00\u79cd\u53ef\u4ee5\u5b58\u50a8\u591a\u4e2a\u503c\u7684\u7c7b\u578b\u3002\u5bf9\u4e8e\u6bcf\u4e2a\u503c\uff0c\u5b83\u4eec\u53ef\u4ee5\u4e0e\u6570\u5b57\u6216\u5b57\u7b26\u4e32\u7ed1\u5b9a\u5e76\u5b58\u50a8\u3002<\/p>\n<p>\u5728\u4e2d\u6587\u4e2d\uff0c\u53ef\u4ee5\u8fd9\u6837\u8868\u8fbe\uff1a<\/p>\n<p>\u6570\u7ec4\u53ef\u4ee5\u901a\u8fc7[]\u521b\u5efa\u3002<br \/>\n\u5982\u679c\u5c06\u6bcf\u4e2a\u6570\u636e\u4e0e\u6570\u5b57\u5173\u8054\u5b58\u50a8\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528[&#8216;data&#8217;]\u6216[0 =&gt; &#8216;data&#8217;]\u3002<br \/>\n\u5982\u679c\u5c06\u6bcf\u4e2a\u6570\u636e\u4e0e\u5b57\u7b26\u4e32\u5173\u8054\u5b58\u50a8\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528[&#8216;sample&#8217; =&gt; &#8216;data&#8217;]\u521b\u5efa\u3002<br \/>\n\u5982\u679c\u53ea\u4f7f\u7528\u503c\u6765\u521b\u5efa\u6570\u7ec4([&#8216;data&#8217;])\uff0c\u503c\u5c06\u6309\u71670,1,2&#8230;\u7684\u6570\u5b57\u4e0e\u5176\u5173\u8054\u3002<\/p>\n<p>\u53d6\u5f97\u6570\u636e\u7684\u65b9\u6cd5\u662f\u901a\u8fc7\u6307\u5b9a\u6570\u5b57\u6216\u5b57\u7b26\u4e32\u6765\u8fdb\u884c\u3002<\/p>\n<p>\u4e3a\u4e86\u8f93\u51faArray\uff0c\u6211\u4eec\u4f7f\u7528\u4e86print_r\u51fd\u6570\u3002<br \/>\n\u8bf7\u53c2\u9605\u6587\u6863\u4ee5\u83b7\u53d6\u66f4\u591a\u8be6\u7ec6\u4fe1\u606f\u3002\u82e5\u5c06true\u4f5c\u4e3a\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4f20\u9012\uff0c\u5219\u4f1a\u8fd4\u56de\u5b57\u7b26\u4e32\u3002<\/p>\n<h4>\u4ee3\u7801\u5c06\u6570\u5b57\u4e0e\u5b58\u50a8\u76f8\u5173\u8054<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$fruit<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span><span class=\"s1\">'apple'<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'blueberry'<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'cherry'<\/span><span class=\"p\">];<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"s2\">\"\u578b:\"<\/span><span class=\"mf\">.<\/span><span class=\"nb\">gettype<\/span><span class=\"p\">(<\/span><span class=\"nv\">$fruit<\/span><span class=\"p\">),<\/span> <span class=\"s2\">\", \u5024:\"<\/span><span class=\"mf\">.<\/span> <span class=\"nb\">print_r<\/span><span class=\"p\">(<\/span><span class=\"nv\">$fruit<\/span><span class=\"p\">,<\/span> <span class=\"kc\">true<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"\u578b:array, \u5024:Array\r\n(\r\n    [0] =&gt; apple\r\n    [1] =&gt; blueberry\r\n    [2] =&gt; cherry\r\n)\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$fruitNum<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span><span class=\"mi\">0<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"s1\">'apple'<\/span><span class=\"p\">,<\/span> <span class=\"mi\">1<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"s1\">'blueberry'<\/span><span class=\"p\">,<\/span> <span class=\"mi\">2<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"s1\">'cherry'<\/span><span class=\"p\">];<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"s2\">\"\u578b:\"<\/span><span class=\"mf\">.<\/span><span class=\"nb\">gettype<\/span><span class=\"p\">(<\/span><span class=\"nv\">$fruitNum<\/span><span class=\"p\">),<\/span> <span class=\"s2\">\", \u5024:\"<\/span><span class=\"mf\">.<\/span> <span class=\"nb\">print_r<\/span><span class=\"p\">(<\/span><span class=\"nv\">$fruitNum<\/span><span class=\"p\">,<\/span> <span class=\"kc\">true<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"\u578b:array, \u5024:Array\r\n(\r\n    [0] =&gt; apple\r\n    [1] =&gt; blueberry\r\n    [2] =&gt; cherry\r\n)\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"nv\">$fruit<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">];<\/span>\r\n<span class=\"s2\">\"apple\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"nv\">$fruitNum<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">];<\/span>\r\n<span class=\"s2\">\"apple\"<\/span>\r\n<\/code><\/pre>\n<p>\u5c06\u6570\u636e\u5b58\u50a8\u548c\u5b57\u7b26\u4e32\u76f8\u5173\u8054<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$monthJa<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span><span class=\"s1\">'january'<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"s1\">'1\u6708'<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'february'<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"s1\">'2\u6708'<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'march'<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"s1\">'3\u6708'<\/span><span class=\"p\">];<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"s2\">\"\u578b:\"<\/span><span class=\"mf\">.<\/span><span class=\"nb\">gettype<\/span><span class=\"p\">(<\/span><span class=\"nv\">$monthJa<\/span><span class=\"p\">),<\/span> <span class=\"s2\">\", \u5024:\"<\/span><span class=\"mf\">.<\/span> <span class=\"nb\">print_r<\/span><span class=\"p\">(<\/span><span class=\"nv\">$monthJa<\/span><span class=\"p\">,<\/span> <span class=\"kc\">true<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"\u578b:array, \u5024:Array\r\n(\r\n    [january] =&gt; 1\u6708\r\n    [february] =&gt; 2\u6708\r\n    [march] =&gt; 3\u6708\r\n)\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"nv\">$monthJa<\/span><span class=\"p\">[<\/span><span class=\"s1\">'january'<\/span><span class=\"p\">];<\/span>\r\n<span class=\"s2\">\"1\u6708\"<\/span>\r\n<\/code><\/pre>\n<h3>\u7269\u4f53 (w\u00f9 t\u01d0)<\/p>\n<h4>\u8bb2\u89e3\u5c0d\u65bc\u80fd\u5920\u5b58\u5132\u591a\u500b\u503c\u7684\u6578\u7d44\u800c\u8a00\uff0c\u7269\u4ef6\u53ef\u4ee5\u5b58\u5132\u591a\u500b\u503c\u548c\u52d5\u4f5c\u3002<br \/>\n\u672c\u6b21\u5c07\u4f7f\u7528stdClass\u4f5c\u70ba\u7269\u4ef6\u7684\u57fa\u790e\u3002<\/p>\n<p>\u5728\u4e2d\u6587\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u5176\u91cd\u65b0\u8868\u8fbe\u4e3a\uff1a<br \/>\n\u6211\u4eec\u4f7f\u7528&#8221;new&#8221;\u6765\u521b\u5efa\u5bf9\u8c61\u3002<br \/>\n\u6211\u4eec\u4f7f\u7528&#8221;-&gt;&#8221;\u6765\u5b58\u50a8\u503c\u3002\u5728\u83b7\u53d6\u503c\u65f6\u4e5f\u4f7f\u7528&#8221;-&gt;&#8221;\u3002<\/p>\n<h4>\u7a0b\u5f0f\u78bc<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$stdobject<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">stdClass<\/span><span class=\"p\">();<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$stdobject<\/span><span class=\"o\">-&gt;<\/span><span class=\"n\">cpu<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'intel i7'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$stdobject<\/span><span class=\"o\">-&gt;<\/span><span class=\"n\">memory<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'8GB'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$stdobject<\/span><span class=\"o\">-&gt;<\/span><span class=\"n\">storage<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'1TB'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"s1\">'CPU:'<\/span> <span class=\"mf\">.<\/span><span class=\"nv\">$stdobject<\/span><span class=\"o\">-&gt;<\/span><span class=\"n\">cpu<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"CPU:intel i7\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"s1\">'MEMORY:'<\/span> <span class=\"mf\">.<\/span><span class=\"nv\">$stdobject<\/span><span class=\"o\">-&gt;<\/span><span class=\"n\">memory<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"MEMORY:8GB\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"s1\">'STORAGE:'<\/span> <span class=\"mf\">.<\/span><span class=\"nv\">$stdobject<\/span><span class=\"o\">-&gt;<\/span><span class=\"n\">storage<\/span><span class=\"p\">;<\/span>\r\n<span class=\"s2\">\"STORAGE:1TB\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"s2\">\"\u578b:\"<\/span><span class=\"mf\">.<\/span><span class=\"nb\">gettype<\/span><span class=\"p\">(<\/span><span class=\"nv\">$stdobject<\/span><span class=\"p\">),<\/span> <span class=\"s2\">\", \u5024:\"<\/span><span class=\"mf\">.<\/span> <span class=\"nb\">print_r<\/span><span class=\"p\">(<\/span><span class=\"nv\">$stdobject<\/span><span class=\"p\">,<\/span> <span class=\"kc\">true<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"\u578b:object, \u5024:stdClass Object\r\n(\r\n    [cpu] =&gt; intel i7\r\n    [memory] =&gt; 8GB\r\n    [storage] =&gt; 1TB\r\n)\"<\/span>\r\n<\/code><\/pre>\n<h3>\u53ef\u8c03\u7528\u7684 (k\u011b de)<\/p>\n<h4>\u89e3\u91cb\u4e0d\u5141\u8bb8\u521b\u5efacallable\u53d8\u91cf\uff0c\u53ea\u80fd\u5728\u7c7b\u578b\u58f0\u660e\u4e2d\u4f7f\u7528\uff0c\u8fd9\u8868\u793a\u5b83\u662f\u4e00\u4e2a\u51fd\u6570\u3002<\/p>\n<h3>\u53ef\u8fed\u4ee3<\/p>\n<h4>\u89e3\u91ca\u53ef\u4ee5\u91cd\u590d\u4f7f\u7528\uff0c\u8868\u793a\u6709\u8fd9\u6837\u7684\u80fd\u529b\u3002\u4e0ecallable\u76f8\u540c\uff0c\u65e0\u6cd5\u521b\u5efaiterable\u53d8\u91cf\uff0c\u5b83\u5728\u7c7b\u578b\u58f0\u660e\u4e2d\u4f7f\u7528\u3002<\/p>\n<h3>\u8d44\u6e90<\/p>\n<h4>\u89e3\u91ca\u8fd9\u662f\u4e00\u4e2a\u7528\u4e8e\u4fdd\u5b58\u5916\u90e8\u8d44\u6e90\u7684\u7c7b\u578b\u3002\u5916\u90e8\u8d44\u6e90\u6307\u7684\u662f\u6587\u4ef6\u7b49\u3002<br \/>\n\u53ef\u4ee5\u4f7f\u7528\u7279\u6b8a\u51fd\u6570\u6765\u521b\u5efa\u8d44\u6e90\u7c7b\u578b\u3002<br \/>\n\u5f53\u5173\u95ed\u8d44\u6e90\u5f15\u7528\u65f6\uff0cgettype\u7684\u8fd4\u56de\u503c\u4f1a\u9644\u52a0(closed)\u3002<\/p>\n<h4>\u4ee3\u7801 (daima)<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$file<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">fopen<\/span><span class=\"p\">(<\/span><span class=\"s1\">'sample.txt'<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'w+'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">fwrite<\/span><span class=\"p\">(<\/span><span class=\"nv\">$file<\/span><span class=\"p\">,<\/span> <span class=\"s2\">\"hello world\"<\/span><span class=\"mf\">.<\/span> <span class=\"kc\">PHP_EOL<\/span><span class=\"p\">);<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">fwrite<\/span><span class=\"p\">(<\/span><span class=\"nv\">$file<\/span><span class=\"p\">,<\/span> <span class=\"s2\">\"Hello World!!\"<\/span><span class=\"mf\">.<\/span> <span class=\"kc\">PHP_EOL<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">rewind<\/span><span class=\"p\">(<\/span><span class=\"nv\">$file<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/\u66f8\u304d\u8fbc\u307f\u5f8c\u3001\u8aad\u307f\u8fbc\u3080\u305f\u3081\u306b\u30d5\u30a1\u30a4\u30eb\u30dd\u30a4\u30f3\u30bf\u3092\u5148\u982d\u306b\u623b\u3057\u307e\u3059<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"nb\">fgets<\/span><span class=\"p\">(<\/span><span class=\"nv\">$file<\/span><span class=\"p\">);<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"nb\">fgets<\/span><span class=\"p\">(<\/span><span class=\"nv\">$file<\/span><span class=\"p\">);<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"s2\">\"\u578b:\"<\/span><span class=\"mf\">.<\/span><span class=\"nb\">gettype<\/span><span class=\"p\">(<\/span><span class=\"nv\">$file<\/span><span class=\"p\">),<\/span> <span class=\"s2\">\", \u5024:\"<\/span><span class=\"mf\">.<\/span> <span class=\"nb\">print_r<\/span><span class=\"p\">(<\/span><span class=\"nv\">$file<\/span><span class=\"p\">,<\/span> <span class=\"kc\">true<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"\u578b:resource, \u5024:Resource id #2\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">fclose<\/span><span class=\"p\">(<\/span><span class=\"nv\">$file<\/span><span class=\"p\">);<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">echo<\/span> <span class=\"s2\">\"\u578b:\"<\/span><span class=\"mf\">.<\/span><span class=\"nb\">gettype<\/span><span class=\"p\">(<\/span><span class=\"nv\">$file<\/span><span class=\"p\">),<\/span> <span class=\"s2\">\", \u5024:\"<\/span><span class=\"mf\">.<\/span> <span class=\"nb\">print_r<\/span><span class=\"p\">(<\/span><span class=\"nv\">$file<\/span><span class=\"p\">,<\/span> <span class=\"kc\">true<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"\u578b:resource (closed), \u5024:Resource id #2\"<\/span>\r\n<\/code><\/pre>\n<h3>\u7a7a<\/p>\n<h4>\u89e3\u91canull\u578b\u8868\u793a\u4e00\u4e2a\u53d8\u91cf\u4e0d\u5177\u6709\u503c\u3002<br \/>\nnull\u7c7b\u578b\u53ea\u80fd\u5177\u6709null\u503c\uff0c\u5e76\u4e14\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u3002<\/p>\n<p>\u5f53\u53d8\u91cf\u6ee1\u8db3\u4ee5\u4e0b\u4e09\u79cd\u60c5\u51b5\u65f6\uff0c\u88ab\u89c6\u4e3a\u7a7a\u503c\uff1a&#8221;null&#8221;\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u5b9a\u6570null\u304c\u4ee3\u5165\u3055\u308c\u3066\u3044\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u307e\u3060\u5024\u304c\u4f55\u3082\u4ee3\u5165\u3055\u308c\u3066\u3044\u306a\u3044<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">unset()\u3055\u308c\u3066\u3044\u308b<\/ul>\n<p>\u5909\u6570\u304cnull\u3068\u307f\u306a\u3055\u308c\u308b\u304b\u306f\u3001is_null\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<br \/>\nis_null\u95a2\u6570\u306f\u5909\u6570\u304cnull\u3068\u307f\u306a\u3055\u308c\u308b\u5834\u5408\u3001true\u3092\u305d\u308c\u4ee5\u5916\u306ffalse\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<p>\u5024\u304c\u4f55\u3082\u4ee3\u5165\u3055\u308c\u3066\u3044\u306a\u3044\u5909\u6570\u3001unset()\u3055\u308c\u305f\u5909\u6570\u306f\u5b58\u5728\u3057\u306a\u304f\u306a\u308a\u3001\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u304f\u306a\u308a\u307e\u3059\u3002<br \/>\n\u30b0\u30ed\u30fc\u30d0\u30eb\u30b9\u30b3\u30fc\u30d7\u3067\u4f7f\u7528\u53ef\u80fd\u306a\u3059\u3079\u3066\u306e\u5909\u6570\u3092\u4fdd\u6301\u3059\u308b\u3001$GLOBALS\u3092\u4f7f\u7528\u3057\u3001\u6319\u52d5\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n<h4>\u4ee3\u7801 (Mandarin Chinese: &#8221; m\u01ce&#8221;)<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$displayKeys<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span><span class=\"s1\">'sample'<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"mi\">0<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'none'<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"mi\">1<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'nothing'<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"mi\">2<\/span><span class=\"p\">];<\/span> <span class=\"c1\">\/\/ \u4eca\u56de\u4f7f\u7528\u3059\u308b\u5909\u6570\u540d<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$sample<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'sample'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_export<\/span><span class=\"p\">(<\/span><span class=\"nb\">is_null<\/span><span class=\"p\">(<\/span><span class=\"nv\">$sample<\/span><span class=\"p\">));<\/span>\r\n<span class=\"s2\">\"false\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">print_r<\/span><span class=\"p\">(<\/span><span class=\"nb\">array_intersect_key<\/span><span class=\"p\">(<\/span><span class=\"nv\">$GLOBALS<\/span><span class=\"p\">,<\/span> <span class=\"nv\">$displayKeys<\/span><span class=\"p\">));<\/span>\r\n<span class=\"s2\">\"Array\r\n(\r\n    [sample] =&gt; sample\r\n)\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$none<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_export<\/span><span class=\"p\">(<\/span><span class=\"nb\">is_null<\/span><span class=\"p\">(<\/span><span class=\"nv\">$none<\/span><span class=\"p\">));<\/span> <span class=\"c1\">\/\/ \u5909\u6570\u304c\u5b58\u5728\u3057\u306a\u3044\u305f\u3081\u3001\u8b66\u544a\u304c\u3067\u307e\u3059\u3002<\/span>\r\n<span class=\"s2\">\"true\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">print_r<\/span><span class=\"p\">(<\/span><span class=\"nb\">array_intersect_key<\/span><span class=\"p\">(<\/span><span class=\"nv\">$GLOBALS<\/span><span class=\"p\">,<\/span> <span class=\"nv\">$displayKeys<\/span><span class=\"p\">));<\/span> <span class=\"c1\">\/\/ none\u306f\u5b58\u5728\u3057\u307e\u305b\u3093\u3002<\/span>\r\n<span class=\"s2\">\"Array\r\n(\r\n    [sample] =&gt; sample\r\n)\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$nothing<\/span> <span class=\"o\">=<\/span> <span class=\"kc\">null<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_export<\/span><span class=\"p\">(<\/span><span class=\"nb\">is_null<\/span><span class=\"p\">(<\/span><span class=\"nv\">$nothing<\/span><span class=\"p\">));<\/span>\r\n<span class=\"s2\">\"true\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">print_r<\/span><span class=\"p\">(<\/span><span class=\"nb\">array_intersect_key<\/span><span class=\"p\">(<\/span><span class=\"nv\">$GLOBALS<\/span><span class=\"p\">,<\/span> <span class=\"nv\">$displayKeys<\/span><span class=\"p\">));<\/span> <span class=\"c1\">\/\/ nothing\u306f\u5024\u3092\u4ee3\u5165\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u5b58\u5728\u3057\u307e\u3059\u3002<\/span>\r\n<span class=\"s2\">\"Array\r\n(\r\n    [sample] =&gt; sample\r\n    [nothing] =&gt;\r\n)\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">unset<\/span><span class=\"p\">(<\/span><span class=\"nv\">$sample<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ \u5909\u6570\u306e<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_export<\/span><span class=\"p\">(<\/span><span class=\"nb\">is_null<\/span><span class=\"p\">(<\/span><span class=\"nv\">$sample<\/span><span class=\"p\">));<\/span> <span class=\"c1\">\/\/ unset\u3067\u5909\u6570sample\u304c\u5b58\u5728\u3057\u306a\u304f\u306a\u3063\u305f\u305f\u3081\u3001\u8b66\u544a\u304c\u3067\u307e\u3059\u3002<\/span>\r\n<span class=\"s2\">\"true\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">print_r<\/span><span class=\"p\">(<\/span><span class=\"nb\">array_intersect_key<\/span><span class=\"p\">(<\/span><span class=\"nv\">$GLOBALS<\/span><span class=\"p\">,<\/span> <span class=\"nv\">$displayKeys<\/span><span class=\"p\">));<\/span> <span class=\"c1\">\/\/ sample\u306funset\u3067\u524a\u9664\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/span>\r\n<span class=\"s2\">\"Array\r\n(\r\n    [nothing] =&gt;\r\n)\"<\/span>\r\n<\/code><\/pre>\n<h2>\u7c7b\u578b\u8f6c\u6362\u901a\u8fc7\u5c06\u7c7b\u578b\u7684\u540d\u79f0\u6dfb\u52a0\u5230\u53d8\u91cf\u7684\u5f00\u5934\uff0c\u53ef\u4ee5\u76f8\u4e92\u8f6c\u6362\u3002<br \/>\n(string) 0 \u5c06\u53d8\u4e3a\u5b57\u7b26\u4e32\u76840\u3002<br \/>\n\u4e3a\u4e86\u5f3a\u5236\u5c06\u4f20\u9012\u7684\u503c\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff0c\u8fd9\u91cc\u6211\u4eec\u5c06\u4f7f\u7528var_dump\u51fd\u6570\u6765\u76f4\u63a5\u8f93\u51fa\u503c\u7684\u5185\u5bb9\u3002<\/p>\n<h3>\u30b9\u30ab\u30e9\u30fc\u578b\u304b\u3089\u8907\u5408\u578b\u3078\u306e\u5909\u63db<\/p>\n<h4>\u89e3\u91ca\u5c06\u6807\u91cf\u7c7b\u578b(bool\u3001int\u3001float\u3001string)\u8f6c\u6362\u4e3a\u590d\u5408\u7c7b\u578b(array\u3001object)\u65f6\uff0c\u6267\u884c\u76f8\u540c\u7684\u64cd\u4f5c\u3002<\/p>\n<p>\u30b9\u30ab\u30e9\u30fc\u578b\u3092array\u306b\u5909\u63db\u3059\u308b\u3068\u3001\u30b9\u30ab\u30e9\u30fc\u578b\u306e\u5024\u3092\u5148\u982d\u306b\u683c\u7d0d\u3057\u305f\u914d\u5217\u306b\u5909\u308f\u308a\u307e\u3059\u3002<br \/>\n\u30b9\u30ab\u30e9\u30fc\u578b\u3092object\u306b\u5909\u63db\u3059\u308b\u3068\u3001\u30b9\u30ab\u30e9\u30fc\u578b\u306e\u5024\u3092scalar\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u683c\u7d0d\u3057\u305f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8(stdClass)\u306b\u5909\u308f\u308a\u307e\u3059\u3002<\/p>\n<h4>\u4ee3\u7801 (daima)<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$intOne<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"k\">array<\/span><span class=\"p\">)<\/span><span class=\"nv\">$intOne<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s1\">'array(1) {\r\n  [0]=&gt;\r\n  int(1)\r\n}'<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">object<\/span><span class=\"p\">)<\/span><span class=\"nv\">$intOne<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s1\">'object(stdClass)#1 (1) {\r\n  [\"scalar\"]=&gt;\r\n  int(1)\r\n}'<\/span>\r\n<\/code><\/pre>\n<h3>\u5e03\u5c14<\/p>\n<h4>\u8bf4\u660ebool\u2192int<br \/>\ntrue\u304c1\u306bfalse\u304c0\u306b\u5909\u63db\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>bool\u2192float<br \/>\ntrue\u304c1.0\u306bfalse\u304c0.0\u306b\u5909\u63db\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>bool\u2192string<br \/>\ntrue\u304c\u6587\u5b57\u5217\u306e1\u306bfalse\u304c\u7a7a\u6587\u5b57\u5217\u306b\u5909\u63db\u3055\u308c\u307e\u3059\u3002<\/p>\n<h4>\u8fd9\u662f\u4e00\u4e2a\u65e5\u8bed\u7684\u8bcd\u6c47\uff0c\u610f\u601d\u662f&#8221;\u4ee3\u7801&#8221;\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$boolTrue<\/span> <span class=\"o\">=<\/span> <span class=\"kc\">true<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$boolFalse<\/span> <span class=\"o\">=<\/span> <span class=\"kc\">false<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">int<\/span><span class=\"p\">)<\/span><span class=\"nv\">$boolTrue<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"int(1)\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">int<\/span><span class=\"p\">)<\/span><span class=\"nv\">$boolFalse<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"int(0)\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">float<\/span><span class=\"p\">)<\/span><span class=\"nv\">$boolTrue<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"float(1)\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">float<\/span><span class=\"p\">)<\/span><span class=\"nv\">$boolFalse<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"float(0)\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">string<\/span><span class=\"p\">)<\/span><span class=\"nv\">$boolTrue<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s1\">'string(1) \"1\"'<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">string<\/span><span class=\"p\">)<\/span><span class=\"nv\">$boolFalse<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s1\">'string(0) \"\"'<\/span>\r\n<\/code><\/pre>\n<h3>\u8981\u6c42\u7528\u4e2d\u6587\u5c06\u4ee5\u4e0b\u5185\u5bb9\u8fdb\u884c\u6539\u8ff0\uff0c\u53ea\u9700\u7ed9\u51fa\u4e00\u79cd\u9009\u62e9\uff1aint<\/p>\n<h4>\u89e3\u91ca\u5c06\u6574\u6570\u7c7b\u578b\u8f6c\u6362\u4e3a\u5e03\u5c14\u7c7b\u578b\uff1a<br \/>\n0\u5c06\u88ab\u8f6c\u6362\u4e3a\u5047\uff08false\uff09\u3002<br \/>\n\u9664\u4e860\u4e4b\u5916\u7684\u5176\u4ed6\u6574\u6570\u5c06\u88ab\u8f6c\u6362\u4e3a\u771f\uff08true\uff09\u3002<\/p>\n<p>int\u2192float<br \/>\n\u6d6e\u52d5\u5c0f\u6570\u70b9\u8868\u73fe\u306b\u5909\u63db\u3055\u308c\u307e\u3059\u3002(0 \u2192 0.0)<\/p>\n<p>\u5c06\u6574\u6570\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u8868\u8fbe\u3002 (10 \u2192 &#8220;10&#8221;)<\/p>\n<h4>\u4ee3\u7801<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$intBoolZero<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$intBoolNonZero<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">15<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">bool<\/span><span class=\"p\">)<\/span><span class=\"nv\">$intBoolZero<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"bool(false)\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">bool<\/span><span class=\"p\">)<\/span><span class=\"nv\">$intBoolNonZero<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"bool(true)\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$intFloat<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">float<\/span><span class=\"p\">)<\/span><span class=\"nv\">$intFloat<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"float(0)\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$intString<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">10<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">string<\/span><span class=\"p\">)<\/span><span class=\"nv\">$intString<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s1\">'string(2) \"10\"'<\/span>\r\n<\/code><\/pre>\n<h3>\u6d6e\u70b9\u6570 (\u53cc\u7cbe\u5ea6)<\/p>\n<h4>\u9610\u8ff0\u5c06float\u8f6c\u6362\u4e3abool\u7c7b\u578b\u30020.0\u548c-0.0\u5c06\u8f6c\u6362\u4e3afalse\u3002\u5176\u4ed6\u503c\u5c06\u8f6c\u6362\u4e3atrue\u3002<\/p>\n<p>\u5c06\u6d6e\u70b9\u6570\u8f6c\u6362\u4e3a\u6574\u6570\u65f6\uff0c\u5c0f\u6570\u90e8\u5206\u5c06\u88ab\u820d\u5f03\u3002<\/p>\n<p>\u6d6e\u70b9\u6570\u4f1a\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u8868\u793a\uff081.0 \u2192 &#8220;1.0&#8221;\uff09\u3002<\/p>\n<h4>\u8bf7\u5c06\u4ee5\u4e0b\u5185\u5bb9\u7528\u4e2d\u6587\u8fdb\u884c\u8868\u8fbe\uff08\u4ec5\u9700\u8981\u4e00\u4e2a\u9009\u9879\uff09\uff1a<br \/>\n\u30b3\u30fc\u30c9<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$floatBoolZero<\/span> <span class=\"o\">=<\/span> <span class=\"mf\">0.0<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$floatBoolNonZero<\/span> <span class=\"o\">=<\/span> <span class=\"mf\">2.0<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">bool<\/span><span class=\"p\">)<\/span><span class=\"nv\">$floatBoolZero<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"bool(false)\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">bool<\/span><span class=\"p\">)<\/span><span class=\"nv\">$floatBoolNonZero<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"bool(true)\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$floatInt<\/span> <span class=\"o\">=<\/span> <span class=\"mf\">1.5<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">int<\/span><span class=\"p\">)<\/span><span class=\"nv\">$floatInt<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"int(1)\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$floatString<\/span> <span class=\"o\">=<\/span> <span class=\"mf\">3.5<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">string<\/span><span class=\"p\">)<\/span><span class=\"nv\">$floatString<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s1\">'string(3) \"3.5\"'<\/span>\r\n<\/code><\/pre>\n<h3>string<\/p>\n<h4>\u89e3\u91ca\u5b57\u7b26\u4e32\u2192\u5e03\u5c14\u503c<br \/>\n\u7a7a\u5b57\u7b26\u4e32\u4ee5\u53ca\u5b57\u7b26\u4e32\u4e2d\u76840\u5c06\u88ab\u8f6c\u6362\u4e3afalse\u3002\uff08\u5b57\u7b26\u4e32\u4e2d\u76840\u88ab\u8f6c\u6362\u4e3afalse\u662fPHP\u7684\u7279\u6b8a\u884c\u4e3a\u3002\uff09<br \/>\n\u5176\u4ed6\u60c5\u51b5\u88ab\u8f6c\u6362\u4e3atrue\u3002<\/p>\n<p>\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6574\u6570\u3002\u5982\u679c\u503c\u7684\u683c\u5f0f\u4e3a\u6570\u5b57\u5f62\u5f0f\uff0c\u5219\u8f6c\u6362\u4e3a\u5bf9\u5e94\u6570\u5b57\u7684\u6574\u6570\u8868\u793a\uff08\u5bf9\u4e8e\u5c0f\u6570\uff0c\u5c0f\u6570\u70b9\u540e\u9762\u5c06\u88ab\u820d\u53bb\uff09\u3002\u5982\u679c\u4e0d\u662f\u6570\u5b57\u683c\u5f0f\uff0c\u5219\u8f6c\u6362\u4e3a0\u3002<\/p>\n<p>\u5b57\u7b26\u4e32\u2192\u6d6e\u70b9\u6570<\/p>\n<p>\u4e0e\u6574\u6570\u4e00\u6837\uff0c\u5982\u679c\u503c\u662f\u6570\u503c\u683c\u5f0f\uff0c\u5b83\u5c06\u88ab\u8f6c\u6362\u4e3a\u5bf9\u5e94\u6570\u503c\u7684\u6d6e\u70b9\u8868\u793a\u6cd5\u3002\uff08\u5bf9\u4e8e\u6574\u6570\uff0c\u5b83\u5c06\u53d8\u4e3a\u5c0f\u6570\u3002\uff09<\/p>\n<h4>\u4ee3\u7801 (Mandarin Chinese: m\u01ce)<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$stringBoolEmpty<\/span> <span class=\"o\">=<\/span> <span class=\"s2\">\"\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$stringBoolZero<\/span> <span class=\"o\">=<\/span> <span class=\"s2\">\"0\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$stringBoolTrue<\/span> <span class=\"o\">=<\/span> <span class=\"s2\">\"12\"<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">bool<\/span><span class=\"p\">)<\/span><span class=\"nv\">$stringBoolEmpty<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"bool(false)\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">bool<\/span><span class=\"p\">)<\/span><span class=\"nv\">$stringBoolZero<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"bool(false)\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">bool<\/span><span class=\"p\">)<\/span><span class=\"nv\">$stringBoolTrue<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"bool(true)\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$stringIntNum<\/span> <span class=\"o\">=<\/span> <span class=\"s2\">\"10\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$stringIntFloat<\/span> <span class=\"o\">=<\/span> <span class=\"s2\">\"10.5\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$stringIntNotNum<\/span> <span class=\"o\">=<\/span> <span class=\"s2\">\"aiu\"<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">int<\/span><span class=\"p\">)<\/span><span class=\"nv\">$stringIntNum<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"int(10)\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">int<\/span><span class=\"p\">)<\/span><span class=\"nv\">$stringIntFloat<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"int(10)\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">int<\/span><span class=\"p\">)<\/span><span class=\"nv\">$stringIntNotNum<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"int(0)\"<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$stringFloatDouble<\/span> <span class=\"o\">=<\/span> <span class=\"s2\">\"1.7\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$stringFloatNum<\/span> <span class=\"o\">=<\/span> <span class=\"s2\">\"1\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$stringFloatNotNum<\/span> <span class=\"o\">=<\/span> <span class=\"s2\">\"float\"<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">float<\/span><span class=\"p\">)<\/span><span class=\"nv\">$stringFloatDouble<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"float(1.7)\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">float<\/span><span class=\"p\">)<\/span><span class=\"nv\">$stringFloatNum<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"float(1)\"<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">float<\/span><span class=\"p\">)<\/span><span class=\"nv\">$stringFloatNotNum<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s2\">\"float(0)\"<\/span>\r\n<\/code><\/pre>\n<h3>\u8907\u5408\u578b\u540c\u58eb\u7684\u6b78\u9084<\/p>\n<h4>\u89e3\u91ca\u6570\u7ec4\u2192\u5bf9\u8c61<br \/>\n\u6570\u7ec4\u7684\u952e\u548c\u503c\u5206\u522b\u6210\u4e3a\u5bf9\u8c61\uff08stdClass\uff09\u7684\u5c5e\u6027\u548c\u5c5e\u6027\u503c\u3002<\/p>\n<p>\u8bf7\u53c2\u8003\u4ee5\u4e0b\u6587\u6863\u3002\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u6bcf\u4e2a\u5c5e\u6027\u548c\u503c\u90fd\u4f1a\u6210\u4e3a\u6570\u7ec4\u7684\u952e\u548c\u503c\u3002<br \/>\n\u4f46\u662f\u6709\u4e00\u4e9b\u4f8b\u5916\u60c5\u51b5\uff0c\u4f8b\u5982\u6839\u636e\u5c5e\u6027\u7684\u8bbf\u95ee\u6743\u9650\u6765\u6539\u53d8\u952e\u7684\u503c\uff0c\u4ee5\u53ca\u672a\u521d\u59cb\u5316\u7684\u7c7b\u578b\u5c5e\u6027\u53ef\u80fd\u4f1a\u88ab\u5220\u9664\u3002<\/p>\n<h4>\u4ee3\u7801<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$game<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span><span class=\"s1\">'darts'<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'bowling'<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'table-tennis'<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"s1\">'\u5353\u7403'<\/span><span class=\"p\">];<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">object<\/span><span class=\"p\">)<\/span><span class=\"nv\">$game<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s1\">'object(stdClass)#1 (3) {\r\n  [\"0\"]=&gt;\r\n  string(5) \"darts\"\r\n  [\"1\"]=&gt;\r\n  string(7) \"bowling\"\r\n  [\"table-tennis\"]=&gt;\r\n  string(6) \"\u5353\u7403\"\r\n}'<\/span>\r\n\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$sportObj<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">stdClass<\/span><span class=\"p\">();<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$sportObj<\/span><span class=\"o\">-&gt;<\/span><span class=\"n\">soccer<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'\u30b5\u30c3\u30ab\u30fc'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$sportObj<\/span><span class=\"o\">-&gt;<\/span><span class=\"n\">baseball<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'\u91ce\u7403'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$sportObj<\/span><span class=\"o\">-&gt;<\/span><span class=\"n\">basketball<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'\u30d0\u30b9\u30b1\u30c3\u30c8\u30dc\u30fc\u30eb'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">php<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"k\">array<\/span><span class=\"p\">)<\/span><span class=\"nv\">$sportObj<\/span><span class=\"p\">);<\/span>\r\n<span class=\"s1\">'array(3) {\r\n  [\"soccer\"]=&gt;\r\n  string(12) \"\u30b5\u30c3\u30ab\u30fc\"\r\n  [\"baseball\"]=&gt;\r\n  string(6) \"\u91ce\u7403\"\r\n  [\"basketball\"]=&gt;\r\n  string(24) \"\u30d0\u30b9\u30b1\u30c3\u30c8\u30dc\u30fc\u30eb\"\r\n}'<\/span>\r\n<\/code><\/pre>\n<h2>\u5f15\u7528&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6211\u81ea\u5df1\u4ecb\u7ecd\u4e00\u4e0b\u3002\u4f60\u597d\uff0c\u6211\u662f\u65e5\u672c\u7cfb\u7edf\u5f00\u53d1\u682a\u5f0f\u4f1a\u793e\u7684\u85e4\u4e95\u3002 \u5728\u5de5\u4f5c\u4e2d\u7ecf\u5e38\u4f7f\u7528PHP\uff0c\u6211\u5728\u52aa\u529b\u5b66\u4e60\uff0c\u5e76\u5c06\u6709\u7528\u7684\u5185\u5bb9\u6574 [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30229","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ 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