{"id":30931,"date":"2024-01-11T07:13:38","date_gmt":"2023-11-19T20:48:53","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/php%e5%85%a5%e9%97%a8%e5%a4%87%e5%bf%98%e5%bd%95\/"},"modified":"2025-08-12T21:27:38","modified_gmt":"2025-08-12T13:27:38","slug":"php%e5%85%a5%e9%97%a8%e5%a4%87%e5%bf%98%e5%bd%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/php%e5%85%a5%e9%97%a8%e5%a4%87%e5%bf%98%e5%bd%95\/","title":{"rendered":"PHP\u5165\u95e8\u5907\u5fd8\u5f55"},"content":{"rendered":"<p>\u8fd9\u4e2a\u6807\u9898\u6709\u70b9\u5947\u602a\u5462&#8230;<\/p>\n<h2>\u6682\u4e14\u5148\u8bf4\u4e00\u58f0\u4f60\u597d\uff0c\u4e16\u754c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?php<\/span>\r\n<span class=\"c1\">\/\/\u30b3\u30e1\u30f3\u30c8\u3067\u30fc\u3059<\/span>\r\n<span class=\"k\">echo<\/span> <span class=\"s2\">\"Hello,World\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"cm\">\/*\u3053\u308c\u3082\u30b3\u30e1\u30f3\u30c8\u3000\uff43\u8a00\u8a9e\u3068\u4e00\u7dd2\u3060\u306d*\/<\/span>\r\n<span class=\"cp\">?&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u5e73\u65f6\u90fd\u5728\u7528Python\uff0c\u6240\u4ee5\u6709\u53ef\u80fd\u4f1a\u5fd8\u8bb0\u52a0\u5206\u53f7\u5462\u3002\u3002\u3002<\/p>\n<h2>\u53d8\u91cf\u5728PHP\u4e2d\uff0c\u4f3c\u4e4e\u5fc5\u987b\u5728\u53d8\u91cf\u524d\u52a0\u4e0a &#8220;$&#8221; \u7b26\u53f7\u3002\u7531\u4e8ePHP\u662f\u52a8\u6001\u7c7b\u578b\u8bed\u8a00\uff0c\u6240\u4ee5\u4e0d\u9700\u8981\u58f0\u660e\u7c7b\u578b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?php<\/span>\r\n<span class=\"nv\">$hello<\/span> <span class=\"o\">=<\/span> <span class=\"s2\">\"Hello,World\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">echo<\/span> <span class=\"nv\">$hello<\/span><span class=\"p\">;<\/span>\r\n<span class=\"cp\">?&gt;<\/span>\r\n<\/code><\/pre>\n<h3>\u53ef\u7528\u7684\u6570\u636e\u7c7b\u578b<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u6587\u5b57\u5217<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u6570\u5024<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u8ad6\u7406\u5024<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u914d\u5217<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30aa\u30d6\u30b8\u30a7\u30af\u30c8<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">null<\/ul>\n<p>\u4f3c\u4e4e\u6709\u8fd9\u6837\u7684\u4e8b\u60c5<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/\u3053\u308c\u3067\u5909\u6570\u306e\u578b\u3092\u8abf\u3079\u308b<\/span>\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">(<\/span><span class=\"n\">\u5909\u6570\u540d<\/span><span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<h2>\u56fa\u5b9a\u7684\u6570\u503c\u8fd9\u4e2a\u4e1c\u897f\u548cC\u8bed\u8a00\u4e2d\u7684#define\u7c7b\u4f3c\u5427\uff1f<\/p>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?php<\/span>\r\n<span class=\"nb\">define<\/span><span class=\"p\">(<\/span><span class=\"s2\">\"N\"<\/span><span class=\"p\">,<\/span><span class=\"mi\">54<\/span><span class=\"p\">);<\/span>\r\n<span class=\"k\">echo<\/span> <span class=\"nc\">N<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"cp\">?&gt;<\/span>\r\n\r\n&gt;&gt;&gt;54\r\n<\/code><\/pre>\n<p>N\u4e0d\u662f\u4e00\u4e2a\u53d8\u91cf\uff0c\u6240\u4ee5\u4e0d\u52a0\u4e0a$\u7b26\u53f7\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nb\">define<\/span><span class=\"p\">(<\/span><span class=\"s2\">\"N\"<\/span><span class=\"p\">,<\/span><span class=\"mi\">54<\/span><span class=\"p\">);<\/span>\r\n<span class=\"nc\">N<\/span><span class=\"o\">=<\/span><span class=\"mi\">34<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>\u6211\u60f3\u8981\u8fdb\u884c\u66f4\u6539\uff0c\u4f46\u662f\u5982\u679c\u6211\u505a\u8fd9\u6837\u7684\u4e8b\u60c5\u4f1a\u51fa\u73b0\u9519\u8bef\u3002<br \/>\n\u6211\u60f3\u91cd\u65b0\u5b9a\u4e49\u4e00\u4e0b\uff0c\u4e5f\u8bb8\u5c31\u4e0d\u4f1a\u51fa\u73b0\u9519\u8bef\u4e86\uff0c\u6240\u4ee5\u5c1d\u8bd5\u4e86\u4e00\u4e0b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nb\">define<\/span><span class=\"p\">(<\/span><span class=\"s2\">\"N\"<\/span><span class=\"p\">,<\/span><span class=\"mi\">54<\/span><span class=\"p\">);<\/span>\r\n<span class=\"k\">echo<\/span> <span class=\"nc\">N<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nb\">define<\/span><span class=\"p\">(<\/span><span class=\"s2\">\"N\"<\/span><span class=\"p\">,<\/span><span class=\"mi\">431443<\/span><span class=\"p\">);<\/span>\r\n<span class=\"k\">echo<\/span> <span class=\"nc\">N<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"o\">&gt;&gt;&gt;<\/span><span class=\"nc\">Constant<\/span> <span class=\"nc\">N<\/span> <span class=\"n\">already<\/span> <span class=\"n\">defined<\/span> \r\n<\/code><\/pre>\n<p>\u597d\u7684\u3002\u51fa\u73b0\u4e86\u4e00\u4e2a\u9519\u8bef\u3002<br \/>\nN\u5df2\u7ecf\u88ab\u5b9a\u4e49\u4e86\uff0c\u5bf9\u5427\uff1f\uff08\u82f1\u8bed\u771f\u7684\u4e00\u70b9\u4e5f\u4e0d\u597d&#8230;\uff09<\/p>\n<h2>\u6761\u4ef6\u5206\u652f\u6210\u4e3a\u5224\u65ad\u6761\u4ef6\u8fdb\u884c\u5206\u5c90\u7684\u65b9\u6cd5\u3002<\/p>\n<h3>\u5982\u679c<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$score<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">44<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"k\">if<\/span><span class=\"p\">(<\/span><span class=\"nv\">$score<\/span> <span class=\"o\">&gt;=<\/span><span class=\"mi\">40<\/span><span class=\"p\">){<\/span>\r\n    <span class=\"k\">echo<\/span> <span class=\"s2\">\"great\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span><span class=\"k\">elseif<\/span><span class=\"p\">(<\/span><span class=\"nv\">$score<\/span><span class=\"o\">==<\/span><span class=\"mi\">30<\/span><span class=\"p\">){<\/span>\r\n    <span class=\"k\">echo<\/span> <span class=\"s2\">\"so so\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span><span class=\"k\">else<\/span><span class=\"p\">{<\/span>\r\n    <span class=\"k\">echo<\/span> <span class=\"s2\">\"bad\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u79cd\u5199\u6cd5\u5f88\u5e38\u89c1\u5427<\/p>\n<h3>\u5207\u6362\u8bed\u53e5<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">switch<\/span><span class=\"p\">(<\/span><span class=\"nv\">$a<\/span><span class=\"p\">){<\/span>\r\n    <span class=\"k\">case<\/span> <span class=\"mi\">1<\/span><span class=\"o\">:<\/span>\r\n        <span class=\"k\">echo<\/span> <span class=\"s2\">\"1\"<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"k\">break<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"k\">case<\/span> <span class=\"mi\">2<\/span><span class=\"o\">:<\/span>\r\n        <span class=\"k\">echo<\/span> <span class=\"s2\">\"2\"<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"k\">break<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"k\">default<\/span><span class=\"o\">:<\/span>\r\n        <span class=\"k\">echo<\/span> <span class=\"s2\">\"0\"<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"k\">break<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u4e5f\u662f\u719f\u6089\u7684\u3002<\/p>\n<h2>\u771f\u5047\u503c\u82e5\u4ee5\u4e0b\u60c5\u51b5\u4e3a\u5047\uff1a<br \/>\n&#8211; \u5b57\u7b26\u4e32\u4e3a&#8221;0&#8243;\u6216\u7a7a\u5b57\u7b26\u4e32<br \/>\n&#8211; \u6570\u503c\u4e3a0\u62160.0<br \/>\n&#8211; \u5e03\u5c14\u503c\u4e3afalse<br \/>\n&#8211; \u6570\u7ec4\u5143\u7d20\u4e2a\u6570\u4e3a0<br \/>\n&#8211; \u7a7a\u503c<\/p>\n<h2>\u4e09\u4e2a\u64cd\u4f5c\u7b26<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">if<\/span><span class=\"p\">(<\/span><span class=\"nv\">$a<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$b<\/span><span class=\"p\">){<\/span>\r\n    <span class=\"nv\">$max<\/span><span class=\"o\">=<\/span><span class=\"nv\">$a<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span><span class=\"k\">else<\/span><span class=\"p\">{<\/span>\r\n    <span class=\"nv\">$max<\/span><span class=\"o\">=<\/span><span class=\"nv\">$b<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u53ef\u4ee5\u5c06\u8fd9\u6bb5\u4ee3\u7801\u6539\u5199\u5982\u4e0b<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$max<\/span> <span class=\"o\">=<\/span><span class=\"p\">(<\/span><span class=\"nv\">$a<\/span><span class=\"o\">&gt;<\/span><span class=\"nv\">$b<\/span><span class=\"p\">)<\/span><span class=\"o\">?<\/span> <span class=\"nv\">$a<\/span><span class=\"o\">:<\/span><span class=\"nv\">$b<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<h2>\u91cd\u590dfor\u5faa\u73af<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">for<\/span><span class=\"p\">(<\/span><span class=\"nv\">$a<\/span><span class=\"o\">=<\/span><span class=\"mi\">0<\/span><span class=\"p\">;<\/span> <span class=\"nv\">$a<\/span><span class=\"o\">&gt;<\/span><span class=\"mi\">10<\/span><span class=\"p\">;<\/span> <span class=\"nv\">$a<\/span><span class=\"o\">++<\/span><span class=\"p\">){<\/span>\r\n    <span class=\"k\">echo<\/span> <span class=\"nv\">$a<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c1\">\/\/\u30b3\u30ed\u30f3\u69cb\u6587<\/span>\r\n<span class=\"k\">for<\/span><span class=\"p\">(<\/span><span class=\"nv\">$a<\/span><span class=\"o\">=<\/span><span class=\"mi\">0<\/span><span class=\"p\">;<\/span> <span class=\"nv\">$a<\/span><span class=\"o\">&lt;<\/span><span class=\"mi\">10<\/span><span class=\"p\">;<\/span> <span class=\"nv\">$a<\/span><span class=\"o\">++<\/span><span class=\"p\">)<\/span><span class=\"o\">:<\/span>\r\n    <span class=\"k\">echo<\/span> <span class=\"nv\">$a<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">endfor<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>\u5faa\u73af\u7684while<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$a<\/span><span class=\"o\">=<\/span><span class=\"mi\">0<\/span>\r\n<span class=\"k\">while<\/span><span class=\"p\">(<\/span><span class=\"nv\">$a<\/span><span class=\"o\">&lt;<\/span><span class=\"mi\">10<\/span><span class=\"p\">){<\/span>\r\n    <span class=\"k\">echo<\/span> <span class=\"nv\">$a<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"nv\">$a<\/span><span class=\"o\">++<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c1\">\/\/\u30b3\u30ed\u30f3\u69cb\u6587<\/span>\r\n<span class=\"k\">while<\/span><span class=\"p\">(<\/span><span class=\"nv\">$a<\/span><span class=\"o\">&lt;<\/span><span class=\"mi\">10<\/span><span class=\"p\">)<\/span><span class=\"o\">:<\/span>\r\n    <span class=\"k\">echo<\/span> <span class=\"nv\">$a<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"nv\">$a<\/span><span class=\"o\">++<\/span>\r\n<span class=\"k\">endwhile<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<h2>\u6392\u5217<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$a<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span><span class=\"mi\">1<\/span><span class=\"p\">,<\/span><span class=\"mi\">2<\/span><span class=\"p\">,<\/span><span class=\"mi\">3<\/span><span class=\"p\">,<\/span><span class=\"mi\">4<\/span><span class=\"p\">,<\/span><span class=\"mi\">5<\/span><span class=\"p\">];<\/span>\r\n<\/code><\/pre>\n<p>\u53ef\u4ee5\u4f7f\u7528\u7c7b\u4f3c\u4e8ePython\u5b57\u5178\u7684\u65b9\u5f0f\u8fdb\u884c\u64cd\u4f5c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$a<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span>\r\n    <span class=\"s2\">\"rad\"<\/span><span class=\"o\">=&gt;<\/span><span class=\"mi\">100<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"s2\">\"blue\"<\/span><span class=\"o\">=&gt;<\/span><span class=\"mi\">200<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"s2\">\"green\"<\/span><span class=\"o\">=&gt;<\/span><span class=\"mi\">10000<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">];<\/span>\r\n<\/code><\/pre>\n<h3>\u5bf9\u4e8e\u6bcf\u4e2a\u53ef\u4ee5\u901a\u8fc7\u8fd9\u6837\u7684\u65b9\u5f0f\u63d0\u53d6\u51fa\u6570\u7ec4\u7684\u5143\u7d20\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$a<\/span><span class=\"o\">=<\/span><span class=\"p\">[<\/span><span class=\"mi\">1<\/span><span class=\"p\">,<\/span><span class=\"mi\">2<\/span><span class=\"p\">,<\/span><span class=\"mi\">3<\/span><span class=\"p\">,<\/span><span class=\"mi\">4<\/span><span class=\"p\">,<\/span><span class=\"mi\">5<\/span><span class=\"p\">,<\/span><span class=\"mi\">6<\/span><span class=\"p\">,<\/span><span class=\"mi\">7<\/span><span class=\"p\">,<\/span><span class=\"mi\">8<\/span><span class=\"p\">,<\/span><span class=\"mi\">9<\/span><span class=\"p\">,<\/span><span class=\"mi\">0<\/span><span class=\"p\">];<\/span>\r\n\r\n<span class=\"k\">foreach<\/span><span class=\"p\">(<\/span><span class=\"nv\">$a<\/span> <span class=\"k\">as<\/span> <span class=\"nv\">$value<\/span><span class=\"p\">)<\/span><span class=\"o\">:<\/span>\r\n    <span class=\"k\">echo<\/span> <span class=\"nv\">$value<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">endforeach<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"o\">&gt;&gt;<\/span><span class=\"mi\">1234567890<\/span>\r\n<\/code><\/pre>\n<h2>\u51fd\u6570 sh\u00f9)<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">fanction<\/span> <span class=\"nf\">hello<\/span><span class=\"p\">(<\/span><span class=\"nv\">$name<\/span><span class=\"o\">=<\/span><span class=\"s2\">\"kenzi\"<\/span><span class=\"p\">){<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"s2\">\"hello\"<\/span><span class=\"mf\">.<\/span><span class=\"nv\">$name<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"nf\">hello<\/span><span class=\"p\">(<\/span><span class=\"s2\">\"\u30b4\u30f3\u30b6\u30ec\u30b9\"<\/span><span class=\"p\">)<\/span> <span class=\"c1\">\/\/hello \u30b4\u30f3\u30b6\u30ec\u30b9<\/span>\r\n<span class=\"nf\">hello<\/span><span class=\"p\">()<\/span> <span class=\"c1\">\/\/hello kenzi<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u4e2a\u6807\u9898\u6709\u70b9\u5947\u602a\u5462&#8230; \u6682\u4e14\u5148\u8bf4\u4e00\u58f0\u4f60\u597d\uff0c\u4e16\u754c\u3002 &lt;?php \/\/\u30b3\u30e1\u30f3\u30c8\u3067\u30fc\u3059 echo &#8221; [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30931","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\/ -->\n<title>PHP\u5165\u95e8\u5907\u5fd8\u5f55 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8ePHP\u5165\u95e8\u5907\u5fd8\u5f55\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/php\u5165\u95e8\u5907\u5fd8\u5f55\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta 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