{"id":109,"date":"2016-11-27T22:15:41","date_gmt":"2016-11-27T14:15:41","guid":{"rendered":"http:\/\/bolg.fengyuwuzu.cn.com\/?p=109"},"modified":"2016-11-27T22:15:41","modified_gmt":"2016-11-27T14:15:41","slug":"php%e5%bc%80%e5%8f%91%e8%bf%87%e7%a8%8b%e4%b8%ad%e6%b3%a8%e6%84%8f%e7%9a%8442%e7%9a%84%e5%87%86%e5%88%99","status":"publish","type":"post","link":"https:\/\/fengyuwuzu.cn\/?p=109","title":{"rendered":"PHP\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u6ce8\u610f\u768442\u7684\u51c6\u5219"},"content":{"rendered":"

PHP \u72ec\u7279\u7684\u8bed\u6cd5\u6df7\u5408\u4e86 C\u3001Java\u3001Perl \u4ee5\u53ca PHP \u81ea\u521b\u65b0\u7684\u8bed\u6cd5\u3002\u5b83\u53ef\u4ee5\u6bd4 CGI\u6216\u8005Perl\u66f4\u5feb\u901f\u7684\u6267\u884c\u52a8\u6001\u7f51\u9875\u3002\u7528PHP\u505a\u51fa\u7684\u52a8\u6001\u9875\u9762\u4e0e\u5176\u4ed6\u7684\u7f16\u7a0b\u8bed\u8a00\u76f8\u6bd4\uff0cPHP\u662f\u5c06\u7a0b\u5e8f\u5d4c\u5165\u5230HTML\u6587\u6863\u4e2d\u53bb\u6267\u884c\uff0c\u6267\u884c\u6548\u7387\u6bd4\u5b8c\u5168\u751f\u6210 HTML\u6807\u8bb0\u7684CGI\u8981\u9ad8\u8bb8\u591a\u3002\u4e0b\u9762\u4ecb\u7ecd\u4e86PHP\u5f00\u53d1\u7a0b\u5e8f\u5e94\u8be5\u6ce8\u610f\u768442\u4e2a\u4f18\u5316\u51c6\u5219\u3002<\/p>\n

1.\u5982\u679c\u4e00\u4e2a\u65b9\u6cd5\u53ef\u9759\u6001\u5316\uff0c\u5c31\u5bf9\u5b83\u505a\u9759\u6001\u58f0\u660e\u3002\u901f\u7387\u53ef\u63d0\u5347\u81f34\u500d\u3002<\/p>\n

2.echo \u6bd4 print \u5feb\u3002<\/p>\n

3.\u4f7f\u7528echo\u7684\u591a\u91cd\u53c2\u6570(\u8bd1\u6ce8\uff1a\u6307\u7528\u9017\u53f7\u800c\u4e0d\u662f\u53e5\u70b9)\u4ee3\u66ff\u5b57\u7b26\u4e32\u8fde\u63a5\u3002<\/p>\n

4.\u5728\u6267\u884cfor\u5faa\u73af\u4e4b\u524d\u786e\u5b9a\u6700\u5927\u5faa\u73af\u6570\uff0c\u4e0d\u8981\u6bcf\u5faa\u73af\u4e00\u6b21\u90fd\u8ba1\u7b97\u6700\u5927\u503c\u3002<\/p>\n

5.\u6ce8\u9500\u90a3\u4e9b\u4e0d\u7528\u7684\u53d8\u91cf\u5c24\u5176\u662f\u5927\u6570\u7ec4\uff0c\u4ee5\u4fbf\u91ca\u653e\u5185\u5b58\u3002<\/p>\n

6.\u5c3d\u91cf\u907f\u514d\u4f7f\u7528__get\uff0c__set\uff0c__autoload\u3002<\/p>\n

7.require_once()\u4ee3\u4ef7\u6602\u8d35\u3002<\/p>\n

8.\u5728\u5305\u542b\u6587\u4ef6\u65f6\u4f7f\u7528\u5b8c\u6574\u8def\u5f84\uff0c\u89e3\u6790\u64cd\u4f5c\u7cfb\u7edf\u8def\u5f84\u6240\u9700\u7684\u65f6\u95f4\u4f1a\u66f4\u5c11\u3002<\/p>\n

9.\u5982\u679c\u4f60\u60f3\u77e5\u9053\u811a\u672c\u5f00\u59cb\u6267\u884c(\u8bd1\u6ce8\uff1a\u5373\u670d\u52a1\u5668\u7aef\u6536\u5230\u5ba2\u6237\u7aef\u8bf7\u6c42)\u7684\u65f6\u523b\uff0c\u4f7f\u7528$_SERVER[\u2018REQUEST_TIME\u2019]\u8981\u597d\u4e8etime()\u3002<\/p>\n

10.\u51fd\u6570\u4ee3\u66ff\u6b63\u5219\u8868\u8fbe\u5f0f\u5b8c\u6210\u76f8\u540c\u529f\u80fd\u3002<\/p>\n

11.str_replace\u51fd\u6570\u6bd4preg_replace\u51fd\u6570\u5feb\uff0c\u4f46strtr\u51fd\u6570\u7684\u6548\u7387\u662fstr_replace\u51fd\u6570\u7684\u56db\u500d\u3002<\/p>\n

12.\u5982\u679c\u4e00\u4e2a\u5b57\u7b26\u4e32\u66ff\u6362\u51fd\u6570\uff0c\u53ef\u63a5\u53d7\u6570\u7ec4\u6216\u5b57\u7b26\u4f5c\u4e3a\u53c2\u6570\uff0c\u5e76\u4e14\u53c2\u6570\u957f\u5ea6\u4e0d\u592a\u957f\uff0c\u90a3\u4e48\u53ef\u4ee5\u8003\u8651\u989d\u5916\u5199\u4e00\u6bb5\u66ff\u6362\u4ee3\u7801\uff0c\u4f7f\u5f97\u6bcf\u6b21\u4f20\u9012\u53c2\u6570\u662f\u4e00\u4e2a\u5b57\u7b26\uff0c\u800c\u4e0d\u662f\u53ea\u5199\u4e00\u884c\u4ee3\u7801\u63a5\u53d7\u6570\u7ec4\u4f5c\u4e3a\u67e5\u8be2\u548c\u66ff\u6362\u7684\u53c2\u6570\u3002<\/p>\n

13.\u4f7f\u7528\u9009\u62e9\u5206\u652f\u8bed\u53e5(\u8bd1\u6ce8\uff1a\u5373switch case)\u597d\u4e8e\u4f7f\u7528\u591a\u4e2aif\uff0celse if\u8bed\u53e5\u3002<\/p>\n

14.\u7528@\u5c4f\u853d\u9519\u8bef\u6d88\u606f\u7684\u505a\u6cd5\u975e\u5e38\u4f4e\u6548\u3002<\/p>\n

15.\u6253\u5f00apache\u7684mod_deflate\u6a21\u5757\u3002<\/p>\n

16.\u6570\u636e\u5e93\u8fde\u63a5\u5f53\u4f7f\u7528\u5b8c\u6bd5\u65f6\u5e94\u5173\u6389\u3002<\/p>\n

17.$row[\u2018id\u2019]\u7684\u6548\u7387\u662f$row[id]\u76847\u500d\u3002<\/p>\n

18.\u9519\u8bef\u6d88\u606f\u4ee3\u4ef7\u6602\u8d35\u3002<\/p>\n

19.\u5c3d\u91cf\u4e0d\u8981\u5728for\u5faa\u73af\u4e2d\u4f7f\u7528\u51fd\u6570\uff0c\u6bd4\u5982for ($x=0; $x prop++)\u8981\u6bd4\u9012\u589e\u4e00\u4e2a\u5c40\u90e8\u53d8\u91cf\u61623\u500d\u3002<\/p>\n

23.\u9012\u589e\u4e00\u4e2a\u672a\u9884\u5b9a\u4e49\u7684\u5c40\u90e8\u53d8\u91cf\u8981\u6bd4\u9012\u589e\u4e00\u4e2a\u9884\u5b9a\u4e49\u7684\u5c40\u90e8\u53d8\u91cf\u61629\u81f310\u500d\u3002<\/p>\n

24.\u4ec5\u5b9a\u4e49\u4e00\u4e2a\u5c40\u90e8\u53d8\u91cf\u800c\u6ca1\u5728\u51fd\u6570\u4e2d\u8c03\u7528\u5b83\uff0c\u540c\u6837\u4f1a\u51cf\u6162\u901f\u5ea6(\u5176\u7a0b\u5ea6\u76f8\u5f53\u4e8e\u9012\u589e\u4e00\u4e2a\u5c40\u90e8\u53d8\u91cf)\u3002PHP\u5927\u6982\u4f1a\u68c0\u67e5\u770b\u662f\u5426\u5b58\u5728\u5168\u5c40\u53d8\u91cf\u3002<\/p>\n

25.\u65b9\u6cd5\u8c03\u7528\u770b\u6765\u4e0e\u7c7b\u4e2d\u5b9a\u4e49\u7684\u65b9\u6cd5\u7684\u6570\u91cf\u65e0\u5173\uff0c\u56e0\u4e3a\u6211(\u5728\u6d4b\u8bd5\u65b9\u6cd5\u4e4b\u524d\u548c\u4e4b\u540e\u90fd)\u6dfb\u52a0\u4e8610\u4e2a\u65b9\u6cd5\uff0c\u4f46\u6027\u80fd\u4e0a\u6ca1\u6709\u53d8\u5316\u3002<\/p>\n

26.\u6d3e\u751f\u7c7b\u4e2d\u7684\u65b9\u6cd5\u8fd0\u884c\u8d77\u6765\u8981\u5feb\u4e8e\u5728\u57fa\u7c7b\u4e2d\u5b9a\u4e49\u7684\u540c\u6837\u7684\u65b9\u6cd5\u3002<\/p>\n

\u7a0b\u5e8f\u5458\u4e13\u5c5e\u793c\u54c1\uff1a\u7f16\u7a0b\u6c34\u676f
\n\u7a0b\u5e8f\u5458\u4e13\u5c5e\u793c\u54c1\uff1a\u7f16\u7a0b\u6c34\u676f
\n27.\u8c03\u7528\u5e26\u6709\u4e00\u4e2a\u53c2\u6570\u7684\u7a7a\u51fd\u6570\uff0c\u5176\u82b1\u8d39\u7684\u65f6\u95f4\u76f8\u5f53\u4e8e\u6267\u884c7\u81f38\u6b21\u7684\u5c40\u90e8\u53d8\u91cf\u9012\u589e\u64cd\u4f5c\u3002\u7c7b\u4f3c\u7684\u65b9\u6cd5\u8c03\u7528\u6240\u82b1\u8d39\u7684\u65f6\u95f4\u63a5\u8fd1\u4e8e15\u6b21\u7684\u5c40\u90e8\u53d8\u91cf\u9012\u589e\u64cd\u4f5c\u3002<\/p>\n

28.\u7528\u5355\u5f15\u53f7\u4ee3\u66ff\u53cc\u5f15\u53f7\u6765\u5305\u542b\u5b57\u7b26\u4e32\uff0c\u8fd9\u6837\u505a\u4f1a\u66f4\u5feb\u4e00\u4e9b\u3002\u56e0\u4e3aPHP\u4f1a\u5728\u53cc\u5f15\u53f7\u5305\u56f4\u7684\u5b57\u7b26\u4e32\u4e2d\u641c\u5bfb\u53d8\u91cf\uff0c\u5355\u5f15\u53f7\u5219\u4e0d\u4f1a\u3002\u5f53\u7136\uff0c\u53ea\u6709\u5f53\u4f60\u4e0d\u9700\u8981\u5728\u5b57\u7b26\u4e32\u4e2d\u5305\u542b\u53d8\u91cf\u65f6\u624d\u53ef\u4ee5\u8fd9\u4e48\u505a\u3002<\/p>\n

29.\u8f93\u51fa\u591a\u4e2a\u5b57\u7b26\u4e32\u65f6\uff0c\u7528\u9017\u53f7\u4ee3\u66ff\u53e5\u70b9\u6765\u5206\u9694\u5b57\u7b26\u4e32\uff0c\u901f\u5ea6\u66f4\u5feb\u3002\u6ce8\u610f\uff1a\u53ea\u6709echo\u80fd\u8fd9\u4e48\u505a\uff0c\u5b83\u662f\u4e00\u79cd\u53ef\u4ee5\u628a\u591a\u4e2a\u5b57\u7b26\u4e32\u5f53\u4f5c\u53c2\u6570\u7684\u201c\u51fd\u6570\u201d(\u8bd1\u6ce8\uff1aPHP\u624b\u518c\u4e2d\u8bf4echo\u662f\u8bed\u8a00\u7ed3\u6784\uff0c\u4e0d\u662f\u771f\u6b63\u7684\u51fd\u6570\uff0c\u6545\u628a\u51fd\u6570\u52a0\u4e0a\u4e86\u53cc\u5f15\u53f7)\u3002<\/p>\n

30.Apache\u89e3\u6790\u4e00\u4e2aPHP\u811a\u672c\u7684\u65f6\u95f4\u8981\u6bd4\u89e3\u6790\u4e00\u4e2a\u9759\u6001HTML\u9875\u9762\u61622\u81f310\u500d\u3002\u5c3d\u91cf\u591a\u7528\u9759\u6001HTML\u9875\u9762\uff0c\u5c11\u7528\u811a\u672c\u3002<\/p>\n

31.\u9664\u975e\u811a\u672c\u53ef\u4ee5\u7f13\u5b58\uff0c\u5426\u5219\u6bcf\u6b21\u8c03\u7528\u65f6\u90fd\u4f1a\u91cd\u65b0\u7f16\u8bd1\u4e00\u6b21\u3002\u5f15\u5165\u4e00\u5957PHP\u7f13\u5b58\u673a\u5236\u901a\u5e38\u53ef\u4ee5\u63d0\u534725%\u81f3100%\u7684\u6027\u80fd\uff0c\u4ee5\u514d\u9664\u7f16\u8bd1\u5f00\u9500\u3002<\/p>\n

32.\u5c3d\u91cf\u505a\u7f13\u5b58\uff0c\u53ef\u4f7f\u7528memcached\u3002memcached\u662f\u4e00\u6b3e\u9ad8\u6027\u80fd\u7684\u5185\u5b58\u5bf9\u8c61\u7f13\u5b58\u7cfb\u7edf\uff0c\u53ef\u7528\u6765\u52a0\u901f\u52a8\u6001Web\u5e94\u7528\u7a0b\u5e8f\uff0c\u51cf\u8f7b\u6570\u636e\u5e93\u8d1f\u8f7d\u3002\u5bf9\u8fd0\u7b97\u7801 (OP code)\u7684\u7f13\u5b58\u5f88\u6709\u7528\uff0c\u4f7f\u5f97\u811a\u672c\u4e0d\u5fc5\u4e3a\u6bcf\u4e2a\u8bf7\u6c42\u505a\u91cd\u65b0\u7f16\u8bd1\u3002<\/p>\n

33.\u5f53\u64cd\u4f5c\u5b57\u7b26\u4e32\u5e76\u9700\u8981\u68c0\u9a8c\u5176\u957f\u5ea6\u662f\u5426\u6ee1\u8db3\u67d0\u79cd\u8981\u6c42\u65f6\uff0c\u4f60\u60f3\u5f53\u7136\u5730\u4f1a\u4f7f\u7528strlen()\u51fd\u6570\u3002\u6b64\u51fd\u6570\u6267\u884c\u8d77\u6765\u76f8\u5f53\u5feb\uff0c\u56e0\u4e3a\u5b83\u4e0d\u505a\u4efb\u4f55\u8ba1\u7b97\uff0c\u53ea\u8fd4\u56de\u5728zval \u7ed3\u6784(C\u7684\u5185\u7f6e\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8PHP\u53d8\u91cf)\u4e2d\u5b58\u50a8\u7684\u5df2\u77e5\u5b57\u7b26\u4e32\u957f\u5ea6\u3002<\/p>\n

\u4f46\u662f\uff0c\u7531\u4e8estrlen()\u662f\u51fd\u6570\uff0c\u591a\u591a\u5c11\u5c11\u4f1a\u6709\u4e9b\u6162\uff0c\u56e0\u4e3a\u51fd\u6570\u8c03\u7528\u4f1a\u7ecf\u8fc7\u8bf8\u591a\u6b65\u9aa4\uff0c\u5982\u5b57\u6bcd\u5c0f\u5199\u5316(\u8bd1\u6ce8\uff1a\u6307\u51fd\u6570\u540d\u5c0f\u5199\u5316\uff0cPHP\u4e0d\u533a\u5206\u51fd\u6570\u540d\u5927\u5c0f\u5199)\u3001\u54c8\u5e0c\u67e5\u627e\uff0c\u4f1a\u8ddf\u968f\u88ab\u8c03\u7528\u7684\u51fd\u6570\u4e00\u8d77\u6267\u884c\u3002\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528isset() \u6280\u5de7\u52a0\u901f\u6267\u884c\u4f60\u7684\u4ee3\u7801\u3002<\/p>\n

(\u4e3e\u4f8b\u5982\u4e0b)<\/p>\n

if (strlen($foo) < 5) { echo \u201cFoo is too short\u201d$$ }<\/p>\n

(\u4e0e\u4e0b\u9762\u7684\u6280\u5de7\u505a\u6bd4\u8f83)<\/p>\n

if (!isset($foo{5})) { echo \u201cFoo is too short\u201d$$ }<\/p>\n

\u8c03\u7528isset()\u6070\u5de7\u6bd4strlen()\u5feb\uff0c\u56e0\u4e3a\u4e0e\u540e\u8005\u4e0d\u540c\u7684\u662f\uff0cisset()\u4f5c\u4e3a\u4e00\u79cd\u8bed\u8a00\u7ed3\u6784\uff0c\u610f\u5473\u7740\u5b83\u7684\u6267\u884c\u4e0d\u9700\u8981\u51fd\u6570\u67e5\u627e\u548c\u5b57\u6bcd\u5c0f\u5199\u5316\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5b9e\u9645\u4e0a\u5728\u68c0\u9a8c\u5b57\u7b26\u4e32\u957f\u5ea6\u7684\u9876\u5c42\u4ee3\u7801\u4e2d\u4f60\u6ca1\u6709\u82b1\u592a\u591a\u5f00\u9500\u3002<\/p>\n

34. \u5f53\u6267\u884c\u53d8\u91cf$i\u7684\u9012\u589e\u6216\u9012\u51cf\u65f6\uff0c$i++\u4f1a\u6bd4++$i\u6162\u4e00\u4e9b\u3002\u8fd9\u79cd\u5dee\u5f02\u662fPHP\u7279\u6709\u7684\uff0c\u5e76\u4e0d\u9002\u7528\u4e8e\u5176\u4ed6\u8bed\u8a00\uff0c\u6240\u4ee5\u8bf7\u4e0d\u8981\u4fee\u6539\u4f60\u7684C\u6216Java\u4ee3\u7801\u5e76\u6307\u671b\u5b83 \u4eec\u80fd\u7acb\u5373\u53d8\u5feb\uff0c\u6ca1\u7528\u7684\u3002++$i\u66f4\u5feb\u662f\u56e0\u4e3a\u5b83\u53ea\u9700\u89813\u6761\u6307\u4ee4(opcodes)\uff0c$i++\u5219\u9700\u89814\u6761\u6307\u4ee4\u3002\u540e\u7f6e\u9012\u589e\u5b9e\u9645\u4e0a\u4f1a\u4ea7\u751f\u4e00\u4e2a\u4e34\u65f6\u53d8\u91cf\uff0c\u8fd9\u4e2a\u4e34\u65f6\u53d8 \u91cf\u968f\u540e\u88ab\u9012\u589e\u3002\u800c\u524d\u7f6e\u9012\u589e\u76f4\u63a5\u5728\u539f\u503c\u4e0a\u9012\u589e\u3002\u8fd9\u662f\u6700\u4f18\u5316\u5904\u7406\u7684\u4e00\u79cd\uff0c\u6b63\u5982Zend\u7684PHP\u4f18\u5316\u5668\u6240\u4f5c\u7684\u90a3\u6837\u3002<\/p>\n

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