{"id":30372,"date":"2023-02-15T03:34:44","date_gmt":"2023-12-11T03:38:38","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/php%e7%9a%84%e5%bc%95%e5%8f%b7\/"},"modified":"2025-08-12T18:51:27","modified_gmt":"2025-08-12T10:51:27","slug":"php%e7%9a%84%e5%bc%95%e5%8f%b7","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/php%e7%9a%84%e5%bc%95%e5%8f%b7\/","title":{"rendered":"php\u7684\u5f15\u53f7"},"content":{"rendered":"<p>\u6211\u67e5\u4e86\u4e00\u4e0bPHP\u7684\u53cc\u5f15\u53f7\u548c\u5355\u5f15\u53f7\uff0c\u8fd9\u91cc\u505a\u4e2a\u8bb0\u5f55\u3002PHP\u7684\u7248\u672c\u662f5.3.15\u3002<\/p>\n<pre class=\"post-pre\"><code>$ php --version\r\nPHP 5.3.15 with Suhosin-Patch (cli) (built: Aug 28 2012 18:19:13)\r\nCopyright (c) 1997-2012 The PHP Group\r\nZend Engine v2.3.0, Copyright (c) 1998-2012 Zend Technologies\r\n<\/code><\/pre>\n<h2>\u9605\u8bfb\u7684\u65b9\u5f0f de\u9996\u5148\uff0c\u6211\u4e0d\u786e\u5b9a\u662f\u7528\u5f15\u53f7\u8fd8\u662f\u62ec\u53f7\uff0c\u56e0\u4e3a\u4e0d\u540c\u7684\u7269\u54c1\u53ef\u80fd\u6709\u4e0d\u540c\u7684\u53d1\u97f3\uff0c\u6240\u4ee5\u6211\u5411\u8c37\u6b4c\u7ffb\u8bd1\u8be2\u95ee\u4e86\u4e00\u4e0b\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30c0\u30d6\u30eb\u30b3\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3 =&gt; Double quotes<\/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\">\u30c0\u30d6\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3 =&gt; Double quotes<\/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\">Double quotes =&gt; \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\">\u4e8c\u91cd\u5f15\u7528\u7b26 =&gt; Double quotes<\/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\">\u30b7\u30f3\u30b0\u30eb\u30b3\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3 =&gt; Single quotes<\/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\">\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3 =&gt; Single quotes<\/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\">Single quotes =&gt; \u5358\u4e00\u5f15\u7528\u7b26<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u5358\u4e00\u5f15\u7528\u7b26 =&gt; Single quotes<\/ul>\n<p>\u4e0d\u7ba1\u54ea\u4e2a\u90fd\u53ef\u4ee5\u3002\u4f7f\u7528\u53cc\u5f15\u53f7\u6216\u8005\u5355\u5f15\u53f7\u4f3c\u4e4e\u66f4\u5bb9\u6613\u7406\u89e3\u3002<\/p>\n<h2>\u5dee\u5f02<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30c0\u30d6\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3000 \uff65\uff65\uff65 \u6587\u5b57\u5217\u4e2d\u306e\u5909\u6570\u3092\u5909\u6570\u5024\u306b\u7f6e\u63db\u3059\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3 \uff65\uff65\uff65 \u6587\u5b57\u5217\u4e2d\u306e\u5909\u6570\u3092\u5909\u6570\u5024\u306b\u7f6e\u63db\u3057\u306a\u3044<\/ul>\n<p>\u6267\u884c\u7684\u5185\u5bb9\u5927\u81f4\u662f\u8fd9\u6837\u7684\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?php<\/span>\r\n<span class=\"k\">echo<\/span> <span class=\"s1\">'\\n'<\/span><span class=\"p\">;<\/span> <span class=\"c1\"># \\n<\/span>\r\n<span class=\"k\">echo<\/span> <span class=\"s2\">\"<\/span><span class=\"se\">\\n<\/span><span class=\"s2\">\"<\/span><span class=\"p\">;<\/span> <span class=\"c1\"># \u6539\u884c\u3055\u308c\u308b<\/span>\r\n\r\n<span class=\"nv\">$pinch<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'(\uff0f\u30fb\u03c9\u30fb)\uff0f\u30d4\u30f3\u30c1\uff01'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"k\">echo<\/span> <span class=\"s1\">'\uff3c(\u30fb\u03c9\u30fb\uff3c)SAN\u5024\uff01$pinch'<\/span><span class=\"p\">;<\/span> <span class=\"c1\"># \uff3c(\u30fb\u03c9\u30fb\uff3c)SAN\u5024\uff01$pinch<\/span>\r\n<span class=\"k\">echo<\/span> <span class=\"s2\">\"\uff3c(\u30fb\u03c9\u30fb\uff3c)SAN\u5024\uff01<\/span><span class=\"nv\">$pinch<\/span><span class=\"s2\">\"<\/span><span class=\"p\">;<\/span> <span class=\"c1\"># \uff3c(\u30fb\u03c9\u30fb\uff3c)SAN\u5024\uff01(\uff0f\u30fb\u03c9\u30fb)\uff0f\u30d4\u30f3\u30c1\uff01<\/span>\r\n\r\n<span class=\"nv\">$str<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'c'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"k\">echo<\/span> <span class=\"s1\">'ab$strd'<\/span><span class=\"p\">;<\/span> <span class=\"c1\"># ab$strd<\/span>\r\n<span class=\"k\">echo<\/span> <span class=\"s2\">\"ab<\/span><span class=\"nv\">$strd<\/span><span class=\"s2\">\"<\/span><span class=\"p\">;<\/span> <span class=\"c1\"># ab<\/span>\r\n<span class=\"k\">echo<\/span> <span class=\"s2\">\"ab <\/span><span class=\"nv\">$str<\/span><span class=\"s2\"> d\"<\/span><span class=\"p\">;<\/span> <span class=\"c1\"># ab c d<\/span>\r\n<span class=\"k\">echo<\/span> <span class=\"s2\">\"ab<\/span><span class=\"nv\">$str<\/span><span class=\"s2\"> d\"<\/span><span class=\"p\">;<\/span> <span class=\"c1\"># abc d<\/span>\r\n<span class=\"k\">echo<\/span> <span class=\"s2\">\"ab<\/span><span class=\"nv\">$str\u306bd<\/span><span class=\"s2\">\"<\/span><span class=\"p\">;<\/span> <span class=\"c1\"># ab<\/span>\r\n<span class=\"k\">echo<\/span> <span class=\"s2\">\"ab<\/span><span class=\"si\">{<\/span><span class=\"nv\">$str<\/span><span class=\"si\">}<\/span><span class=\"s2\">d\"<\/span><span class=\"p\">;<\/span> <span class=\"c1\"># abcd<\/span>\r\n\r\n<span class=\"kd\">class<\/span> <span class=\"nc\">Huge<\/span><span class=\"p\">{<\/span>\r\n  <span class=\"k\">function<\/span> <span class=\"n\">foo<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"s1\">'hi'<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"nv\">$huge<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">Huge<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">echo<\/span> <span class=\"s2\">\"hoo <\/span><span class=\"nv\">$huge-&gt;foo<\/span><span class=\"s2\">()\"<\/span><span class=\"p\">;<\/span> <span class=\"c1\"># hoo ()<\/span>\r\n<span class=\"k\">echo<\/span> <span class=\"s2\">\"hoo <\/span><span class=\"si\">{<\/span><span class=\"nv\">$huge<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">foo<\/span><span class=\"p\">()<\/span><span class=\"si\">}<\/span><span class=\"s2\">\"<\/span><span class=\"p\">;<\/span> <span class=\"c1\"># hoo hi<\/span>\r\n\r\n<\/code><\/pre>\n<h2>\u6267\u884c\u901f\u5ea6<\/p>\n<h3>\u53ea\u9700\u4ee3\u5165<br \/>\n\u521b\u5efa\u4e00\u4e2a\u7c7b\u4f3c\u4ee5\u4e0b\u7684\u7a0b\u5e8f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?php<\/span>\r\n<span class=\"nv\">$start<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">time<\/span><span class=\"p\">();<\/span>\r\n<span class=\"nv\">$count<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1000000000<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">for<\/span> <span class=\"p\">(<\/span><span class=\"nv\">$i<\/span><span class=\"o\">=<\/span><span class=\"mi\">0<\/span><span class=\"p\">;<\/span><span class=\"nv\">$i<\/span><span class=\"o\">&lt;<\/span><span class=\"nv\">$count<\/span><span class=\"p\">;<\/span><span class=\"nv\">$i<\/span><span class=\"o\">++<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"nv\">$str<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'hihi'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"nv\">$end<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">time<\/span><span class=\"p\">();<\/span>\r\n\r\n<span class=\"k\">echo<\/span> <span class=\"nv\">$end<\/span> <span class=\"o\">-<\/span> <span class=\"nv\">$start<\/span> <span class=\"mf\">.<\/span> <span class=\"s2\">\"<\/span><span class=\"se\">\\n<\/span><span class=\"s2\">\"<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>\u8fd8\u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3adoubleQuotes.php\u7684\u6587\u4ef6\uff0c\u5c06\u5bf9$str\u7684\u8d4b\u503c\u4ece\u5355\u5f15\u53f7\u6539\u4e3a\u53cc\u5f15\u53f7\u3002<\/p>\n<pre class=\"post-pre\"><code>$ diff doubleQuotes.php singleQuotes.php\r\n5c5\r\n&lt;     $str = \"hihi\";\r\n---\r\n&gt;     $str = 'hihi';\r\n<\/code><\/pre>\n<p>\u6267\u884c 10 \u6b21\u5e76\u6bd4\u8f83\u5e73\u5747\u503c\u3002<\/p>\n<pre class=\"post-pre\"><code>$ for i in `seq 1 10`; do php singleQuotes.php ;done;\r\n92\r\n97\r\n100\r\n94\r\n102\r\n93\r\n101\r\n100\r\n77\r\n90\r\n# \u5e73\u5747\u5024 94.6\r\n$ for i in `seq 1 10`; do php doubleQuotes.php ;done;\r\n101\r\n95\r\n100\r\n77\r\n111\r\n96\r\n78\r\n107\r\n98\r\n100\r\n# \u5e73\u5747\u5024 96.3\r\n<\/code><\/pre>\n<p>\u901f\u5ea6\u7684\u5dee\u8ddd\u53ef\u4ee5\u8bf4\u662f\u5f88\u5927\u7684\u8bef\u5dee\u3002<\/p>\n<h3>\u53d8\u91cf\u5c55\u5f00\u6d4b\u8bd5\u53d8\u91cf\u5c55\u5f00\u7684\u901f\u5ea6<\/p>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?php<\/span>\r\n<span class=\"nv\">$start<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">time<\/span><span class=\"p\">();<\/span>\r\n<span class=\"nv\">$count<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1000000000<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$str1<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'hi'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">for<\/span> <span class=\"p\">(<\/span><span class=\"nv\">$i<\/span><span class=\"o\">=<\/span><span class=\"mi\">0<\/span><span class=\"p\">;<\/span><span class=\"nv\">$i<\/span><span class=\"o\">&lt;<\/span><span class=\"nv\">$count<\/span><span class=\"p\">;<\/span><span class=\"nv\">$i<\/span><span class=\"o\">++<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nv\">$str2<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'hi'<\/span> <span class=\"mf\">.<\/span> <span class=\"nv\">$str1<\/span> <span class=\"mf\">.<\/span> <span class=\"s1\">'hi'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"nv\">$end<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">time<\/span><span class=\"p\">();<\/span>\r\n\r\n<span class=\"k\">echo<\/span> <span class=\"nv\">$end<\/span> <span class=\"o\">-<\/span> <span class=\"nv\">$start<\/span> <span class=\"mf\">.<\/span> <span class=\"s2\">\"<\/span><span class=\"se\">\\n<\/span><span class=\"s2\">\"<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code>$ diff singleQuotes.php doubleQuotes.php\r\n6c6\r\n&lt;     $str2 = 'hi' . $str1 . 'hi';\r\n---\r\n&gt;     $str2 = \"hi{$str1}hi\";\r\n<\/code><\/pre>\n<p>\u8fdb\u884c10\u6b21\u5b9e\u9a8c\u5e76\u6bd4\u8f83\u5e73\u5747\u503c\u3002<\/p>\n<pre class=\"post-pre\"><code>$ for i in `seq 1 10`; do php singleQuotes.php ;done;\r\n140\r\n140\r\n141\r\n136\r\n139\r\n141\r\n121\r\n153\r\n141\r\n143\r\n# \u5e73\u5747\u5024 139.5\r\n$ for i in `seq 1 10`; do php doubleQuotes.php ;done;\r\n138\r\n168\r\n165\r\n160\r\n162\r\n177\r\n142\r\n175\r\n170\r\n170\r\n# \u5e73\u5747\u5024 162.7\r\n<\/code><\/pre>\n<p>\u4f3c\u4e4e\u4f7f\u7528\u53cc\u5f15\u53f7\u8fdb\u884c\u53d8\u91cf\u5c55\u5f00\u4f1a\u7a0d\u5fae\u6162\u4e00\u4e9b\u3002<\/p>\n<h3>\u683c\u5f0f\u5316\u987a\u4fbf\u6765\u770b\u770b\u4f7f\u7528sprintf\u7684\u901f\u5ea6\u3002<\/p>\n<pre class=\"post-pre\"><code>$ diff singleQuotes.php sprintf.php\r\n6c6\r\n&lt;     $str2 = 'hi' . $str1 . 'hi';\r\n---\r\n&gt;     $str2 = sprintf('hi%shi', $str1);\r\n<\/code><\/pre>\n<p>\u6267\u884c\u5341\u6b21\u5e76\u6bd4\u8f83\u5e73\u5747\u503c<\/p>\n<pre class=\"post-pre\"><code>$ for i in `seq 1 10`; do php sprintf.php ;done;\r\n370\r\n371\r\n378\r\n382\r\n401\r\n394\r\n415\r\n396\r\n402\r\n385\r\n# \u5e73\u5747\u5024 389.4\r\n<\/code><\/pre>\n<p>\u542c\u8bf4\u76f8\u6bd4\u4e8e\u5355\u5f15\u53f7\uff0c\u9700\u8981\u82b1\u8d39\u5927\u7ea6\u4e09\u500d\u7684\u65f6\u95f4\u3002<\/p>\n<h2>\u6982\u62ec\u8d77\u6765\u5728\u4e2d\u6587\u4e2d\u7684\u540c\u4e49\u8868\u8fbe\u4e3a\uff1a<\/p>\n<p>\u662f\u7531\u4e8e\u5355\u5f15\u53f7\u66f4\u5feb\u901f\u5417\uff1f<br \/>\n\u53cc\u5f15\u53f7\u53ef\u4ee5\u4f7f\u4ee3\u7801\u770b\u8d77\u6765\u66f4\u6574\u6d01\uff0c\u4f46\u53ef\u80fd\u4f1a\u5f71\u54cd\u6267\u884c\u901f\u5ea6\u3002<br \/>\n\u867d\u7136\u53ef\u80fd\u5e76\u4e0d\u662f\u592a\u503c\u5f97\u62c5\u5fc3\u7684\u95ee\u9898\u3002<br \/>\n\u867d\u7136\u5076\u5c14\u6211\u4f1a\u4f7f\u7528sprintf\uff0c\u4f46\u5728\u4f7f\u7528\u9891\u7387\u8f83\u9ad8\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u8003\u8651\u4e00\u4e0b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6211\u67e5\u4e86\u4e00\u4e0bPHP\u7684\u53cc\u5f15\u53f7\u548c\u5355\u5f15\u53f7\uff0c\u8fd9\u91cc\u505a\u4e2a\u8bb0\u5f55\u3002PHP\u7684\u7248\u672c\u662f5.3.15\u3002 $ php &#8211;version  [&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-30372","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) - 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