\u8f6c\u8f7d\u81ea\u7f51\u7edc:\u4e0d\u77e5\u786e\u5207\u7684\u4f5c\u8005:(<\/p>\n
PHP\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u4f18\u5316
\n\u4f7f\u7528PHP\u7f16\u7a0b\u7684\u6700\u5927\u597d\u5904\u662f\u5b66\u4e60\u8fd9\u79cd\u7f16\u7a0b\u8bed\u8a00\u975e\u5e38\u5bb9\u6613\u4ee5\u53ca\u5176\u4e30\u5bcc\u7684\u5e93\u3002\u5373\u4f7f\u5bf9\u9700\u8981\u4f7f\u7528\u7684\u51fd\u6570\u4e0d\u662f\u5341\u5206\u4e86\u89e3\uff0c\u6211\u4eec\u4e5f\u80fd\u591f\u731c\u6d4b\u51fa\u5982\u4f55\u5b8c\u6210\u4e00\u4e2a\u7279\u5b9a\u7684\u4efb\u52a1\u3002<\/p>\n
\u5c3d\u7ba1PHP\u975e\u5e38\u7b80\u5355\u6613\u5b66\uff0c\u4f46\u6211\u4eec\u4ecd\u7136\u9700\u8981\u82b1\u8d39\u4e00\u70b9\u65f6\u95f4\u6765\u5b66\u4e60PHP\u7684\u4e00\u4e9b\u7f16\u7a0b\u6280\u5de7\uff0c\u5c24\u5176\u662f\u4e0e\u6027\u80fd\u548c\u5185\u5b58\u5360\u7528\u76f8\u5173\u7684\u6280\u5de7\u3002\u5728PHP\u4e2d\uff0c\u6709\u8bb8\u591a\u5c0f\u6280\u5de7\u80fd\u591f\u4f7f\u6211\u4eec\u51cf\u5c11\u5185\u5b58\u7684\u5360\u7528\uff0c\u5e76\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u3002\u5728\u672c\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u5bf9PHP\u5e94\u7528\u7a0b\u5e8f\u7684\u5206\u6790\u3001\u5982\u4f55\u6539\u53d8\u811a\u672c\u4ee3\u7801\u4ee5\u53ca\u6bd4\u8f83\u4f18\u5316\u524d\u540e\u7684\u5404\u79cd\u53c2\u6570\u503c\u8fdb\u884c\u7b80\u8981\u7684\u4ecb\u7ecd\u3002<\/p>\n
\u901a\u8fc7\u5728\u7a0b\u5e8f\u4e2d\u8bbe\u7f6e\u8ba1\u65f6\u7684\u7a0b\u5e8f\uff0c\u5e76\u53cd\u590d\u6267\u884c\u8fd9\u4e9b\u4ee3\u7801\uff0c\u6211\u4eec\u53ef\u4ee5\u83b7\u5f97\u6709\u5173\u7a0b\u5e8f\u6267\u884c\u901f\u5ea6\u7684\u4e00\u7ec4\u6570\u636e\uff0c\u8fd9\u4e9b\u6570\u636e\u53ef\u4ee5\u53ef\u4ee5\u7528\u6765\u53d1\u73b0\u7a0b\u5e8f\u4e2d\u7684\u74f6\u9888\uff0c\u4ee5\u53ca\u5982\u4f55\u8fdb\u884c\u4f18\u5316\uff0c\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u3002<\/p>\n
\u4e5f\u8bb8\u8bfb\u8005\u66fe\u7ecf\u542c\u8bf4\u8fc7PEAR\u5e93\u5427\u3002\u6211\u4eec\u5c06\u4f7f\u7528PEAR\u5e93\u521b\u5efa\u5728\u5206\u6790\u65f6\u9700\u8981\u4f7f\u7528\u7684\u4f8b\u5b50\uff0c\u8fd9\u4e5f\u662f\u5bf9\u73b0\u6709\u7684\u4ee3\u7801\u8fdb\u884c\u5206\u6790\u7684\u6700\u7b80\u5355\u7684\u65b9\u6cd5\uff0c\u5b83\u4f7f\u6211\u4eec\u65e0\u9700\u4f7f\u7528\u5546\u7528\u4ea7\u54c1\u5c31\u80fd\u5bf9\u4ee3\u7801\u8fdb\u884c\u5206\u6790\u3002<\/p>\n
\u6211\u4eec\u8981\u4f7f\u7528\u7684\u5e93\u7684\u540d\u5b57\u662fPEAR::Benchmark\uff0c\u5b83\u5bf9\u4e8e\u5bf9\u4ee3\u7801\u8fdb\u884c\u5206\u6790\u548c\u6027\u80fd\u6d4b\u8bd5\u975e\u5e38\u6709\u7528\u3002\u8fd9\u4e2a\u5e93\u63d0\u4f9b\u4e00\u4e2a\u540d\u5b57\u4e3aBenchmark_Timer()\u7684\u7c7b\uff0c\u80fd\u591f\u8bb0\u5f55\u4e00\u4e2a\u51fd\u6570\u8c03\u7528\u548c\u4e0b\u4e00\u4e2a\u51fd\u6570\u8c03\u7528\u4e4b\u95f4\u7684\u65f6\u95f4\u3002\u5728\u5bf9\u4ee3\u7801\u7684\u6027\u80fd\u8fdb\u884c\u6d4b\u8bd5\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u5f97\u5230\u4e00\u4e2a\u8be6\u7ec6\u7684\u811a\u672c\u6267\u884c\u7ed3\u679c\uff0c\u5b83\u975e\u5e38\u7b80\u5355\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
\n
include_once(“Benchmark\/Timer.php”);<\/p>\n
\u3000\u3000$bench = new Benchmark_Timer; $bench->start();<\/p>\n
\u3000\u3000$bench->setMarker(‘Start of the script’); \u73b0\u5728\u5904\u4e8e\u7761\u7720\u72b6\u6001\u51e0\u5206\u949f<\/p>\n
\u3000\u3000sleep(5); $bench->stop(); \/\/ \u4ece\u8ba1\u65f6\u5668\u4e2d\u83b7\u5f97\u5206\u6790\u4fe1\u606f<\/p>\n
\u3000\u3000print_r($bench->getProfiling());<\/p>\n
?><\/p>\n
\u4e0a\u9762\u4ee3\u7801\u6267\u884c\u540e\u7684\u8f93\u51fa\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
Array<\/p>\n
\u3000\u3000(<\/p>\n
\u3000\u3000[0] => Array<\/p>\n
\u3000\u3000(<\/p>\n
\u3000\u3000[name] => Start<\/p>\n
\u3000\u3000[time] => 1013214253.05751200<\/p>\n
\u3000\u3000[diff] => –<\/p>\n
\u3000\u3000[total] => 0<\/p>\n
\u3000\u3000)<\/p>\n
[1] => Array<\/p>\n
\u3000\u3000(<\/p>\n
\u3000\u3000[name] => Start of the script<\/p>\n
\u3000\u3000[time] => 1013214253.05761100<\/p>\n
\u3000\u3000[diff] => 9.8943710327148E-05<\/p>\n
\u3000\u3000[total] => 9.8943710327148E-05<\/p>\n
\u3000\u3000)<\/p>\n
[2] => Array<\/p>\n
\u3000\u3000(<\/p>\n
\u3000\u3000[name] => Stop<\/p>\n
\u3000\u3000[time] => 1013214258.04920700<\/p>\n
\u3000\u3000[diff] => 4.9915959835052<\/p>\n
\u3000\u3000[total] => 4.9916949272156<\/p>\n
\u3000\u3000)<\/p>\n
\u3000\u3000)<\/p>\n
\u4e0a\u9762\u7684\u6570\u5b57\u4f3c\u4e4e\u662f\u4e00\u7ec4\u6742\u4e71\u65e0\u7ae0\u7684\u6570\u5b57\uff0c\u4f46\u5982\u679c\u7a0b\u5e8f\u7684\u89c4\u6a21\u66f4\u5927\uff0c\u8fd9\u4e9b\u6570\u5b57\u5c31\u5341\u5206\u5730\u6709\u7528\u4e86\u3002
\n\u4e5f\u8bb8\u5e7f\u5927\u8bfb\u8005\u4e5f\u80fd\u731c\u6d4b\u5230\uff0c\u6570\u7ec4\u7684\u7b2c\u4e00\u4e2a\u8868\u76ee\u662f\u5b9e\u9645\u8c03\u7528Benchmark_Timer()\u7c7b\u7684\u65b9\u6cd5\uff0c\u4f8b\u5982
\n$bench->start()\u3001$bench->setMarker()\u548c$bench->stop()\uff0c\u4e0e\u8fd9\u4e9b\u8868\u76ee\u6709\u5173\u7684\u6570\u5b57\u662f\u76f8\u5f53\u7b80\u5355\u7684\uff0c\u73b0\u5728\u6211\u4eec\u6765\u4ed4\u7ec6\u5730\u7814\u7a76\u8fd9\u4e9b\u6570\u5b57\uff1a<\/p>\n
[0] => Array<\/p>\n
\u3000\u3000(<\/p>\n
\u3000\u3000[name] => Start<\/p>\n
\u3000\u3000[time] => 1013214253.05751200<\/p>\n
\u3000\u3000[diff] => –<\/p>\n
\u3000\u3000[total] => 0<\/p>\n
\u3000\u3000)<\/p>\n
time\u8868\u76ee\u6307\u7684\u662f\u4f55\u65f6\u5bf9Benchmark_Timer()\u7684start()\u65b9\u6cd5\u8c03\u7528\u7684UNIX\u7684timestamp\uff0cdiff\u8868\u76ee\u8868\u793a\u8fd9\u6b21\u8c03\u7528\u548c\u4e0a\u6b21\u8c03\u7528\u4e4b\u95f4\u7684\u65f6\u95f4\u95f4\u9694\uff0c\u7531\u4e8e\u8fd9\u91cc\u6ca1\u6709\u4e0a\u4e00\u6b21\uff0c\u56e0\u6b64\u663e\u793a\u51fa\u4e86\u4e00\u4e2a\u7834\u6298\u53f7\uff0ctotal\u8868\u76ee\u6307\u7684\u662f\u81ea\u6d4b\u8bd5\u5f00\u59cb\u5230\u8fd9\u4e00\u7279\u5b9a\u7684\u8c03\u7528\u4e4b\u524d\u4ee3\u7801\u8fd0\u884c\u7684\u603b\u7684\u65f6\u95f4\u3002\u4e0b\u9762\u6211\u4eec\u6765\u770b\u770b\u4e0b\u4e00\u4e2a\u6570\u7ec4\u7684\u8f93\u51fa\uff1a<\/p>\n
[1] => Array<\/p>\n
\u3000\u3000(<\/p>\n
\u3000\u3000[name] => Start of the script<\/p>\n
\u3000\u3000[time] => 1013214253.05761100<\/p>\n
\u3000\u3000[diff] => 9.8943710327148E-05<\/p>\n
\u3000\u3000[total] => 9.8943710327148E-05<\/p>\n
\u3000\u3000)<\/p>\n
\u4ece\u4e0a\u9762\u7684\u6570\u5b57\u6211\u4eec\u53ef\u4ee5\u770b\u51fa\uff0c\u5728\u8c03\u7528$bench->start()\u4e4b\u540e\uff0c\u7a0b\u5e8f\u8fd0\u884c\u4e869.8943710327148E-05\u79d2\uff08\u4e5f\u5c31\u662f0.0000989\u79d2\uff09\u540e\u5f00\u59cb\u8c03\u7528$bench->setMarker(….)\u3002<\/p>\n
\u4e00\u6b21\u771f\u5b9e\u7684\u6027\u80fd\u6d4b\u8bd5\u7ecf\u5386<\/p>\n
\u5c3d\u7ba1\u4e0a\u9762\u7684\u4f8b\u5b50\u4e0d\u9519\uff0c\u4f46\u5728\u5bf9\u4e8e\u51b3\u5b9a\u5982\u4f55\u4f18\u5316\u4f60\u7684\u7ad9\u70b9\u4ee3\u7801\u8bbe\u8ba1\u65b9\u9762\uff0c\u5b83\u771f\u7684\u4e0d\u80fd\u7b97\u662f\u4e00\u4e2a\u597d\u4f8b\u5b50\u3002\u4e0b\u9762\u6211\u5c06\u7528\u6211\u81ea\u5df1\u4f5c\u4e3a\u7f51\u7ad9\u6280\u672f\u4eba\u5458\u7684\u4e00\u6bb5\u4eb2\u8eab\u7ecf\u5386\u6765\u8bf4\u660e\u5982\u4f55\u89e3\u51b3\u6027\u80fd\u65b9\u9762\u5b58\u5728\u7684\u95ee\u9898\u3002<\/p>\n
\u6211\u5e76\u4e0d\u5927\u7406\u89e3\u7f51\u7ad9\u4f7f\u7528\u7684\u4ee3\u7801\uff0c\u56e0\u4e3a\u5b83\u662f\u6839\u636e\u7279\u6b8a\u7684\u9700\u6c42\uff0c\u5386\u7ecf\u591a\u5e74\u5f00\u53d1\u800c\u6210\u7684\u2501\u2501\u5176\u4e2d\u7684\u4e00\u4e2a\u6a21\u5757\u5305\u62ec\u7f51\u7ad9\u8f6c\u6362\u4ee3\u7801\uff0c\u53e6\u4e00\u4e2a\u6a21\u5757\u8bb0\u5f55\u7f51\u7ad9\u7684\u4f7f\u7528\u60c5\u51b5\uff0c\u5176\u4ed6\u7684\u6a21\u5757\u4e5f\u5404\u6709\u5404\u7684\u4f5c\u7528\u3002\u6211\u548c\u7f51\u7ad9\u7684\u4e3b\u8981\u5f00\u53d1\u8005\u90fd\u610f\u8bc6\u5230\u7f51\u7ad9\u7684\u4ee3\u7801\u9700\u8981\u4f18\u5316\uff0c\u4f46\u53c8\u4e0d\u6e05\u695a\u95ee\u9898\u51fa\u5728\u54ea\u513f\u3002<\/p>\n
\u4e3a\u4e86\u5c3d\u5feb\u5730\u5b8c\u6210\u4efb\u52a1\uff0c\u6211\u5f00\u59cb\u7814\u7a76\u7f51\u7ad9\u7684\u4e3b\u8981\u811a\u672c\u4ee3\u7801\uff0c\u5e76\u5728\u5168\u90e8\u811a\u672c\u4ee3\u7801\u4ee5\u53ca\u5176\u5305\u542b\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4e86\u4e00\u4e9b$bench->setMarker()\u547d\u4ee4\uff0c\u7136\u540e\u5206\u6790$bench->getProfiling()\u7684\u8f93\u51fa\uff0c\u5e76\u5bf9\u5f97\u5230\u7684\u7ed3\u679c\u5927\u5403\u4e00\u60ca\uff0c\u539f\u6765\u95ee\u9898\u51fa\u5728\u4e00\u4e2a\u4e0e\u83b7\u5f97\u7279\u5b9a\u8bed\u8a00\u540d\u5b57\uff08\u4f8b\u5982en\u4ee3\u8868english\uff09\u7684\u8f6c\u6362\u4ee3\u7801\u7684\u51fd\u6570\u8c03\u7528\u4e2d\uff0c\u8be5\u51fd\u6570\u5728\u6bcf\u4e2a\u9875\u9762\u4e0a\u90fd\u4f1a\u88ab\u4f7f\u7528\u6570\u767e\u6b21\u3002\u6bcf\u6b21\u8c03\u7528\u8be5\u51fd\u6570\u65f6\uff0c\u811a\u672c\u4ee3\u7801\u90fd\u4f1a\u5bf9\u4e00\u4e2aMySQL\u6570\u636e\u5e93\u8fdb\u884c\u67e5\u8be2\uff0c\u4ece\u4e00\u4e2a\u6570\u636e\u5e93\u8868\u4e2d\u83b7\u5f97\u771f\u6b63\u7684\u8bed\u8a00\u540d\u5b57\u3002<\/p>\n
\u4e8e\u662f\u6211\u4eec\u8fd9\u4e00\u7c7b\u7684\u4fe1\u606f\u521b\u5efa\u4e86\u4e00\u4e2a\u7f13\u51b2\u7cfb\u7edf\u3002\u7ecf\u8fc7\u77ed\u77ed2\u5929\u65f6\u95f4\u7684\u5de5\u4f5c\uff0c\u6211\u4eec\u4f7f\u7cfb\u7edf\u7684\u6027\u80fd\u5f97\u5230\u4e86\u5f88\u5927\u7684\u63d0\u9ad8\uff0c\u7b2c\u4e00\u5468\u5185\u9875\u9762\u7684\u6d4f\u89c8\u91cf\u4e5f\u56e0\u6b64\u800c\u589e\u52a0\u4e8640%\u3002\u5f53\u7136\u4e86\uff0c\u8fd9\u53ea\u662f\u4e00\u4e2a\u6709\u5173\u5206\u6790\u4ee3\u7801\u80fd\u591f\u63d0\u9ad8\u4e92\u8054\u7f51\u5e94\u7528\u6216\u4e92\u8054\u7f51\u7f51\u7ad9\u6027\u80fd\u7684\u4f8b\u5b50\u3002 <\/p>\n
\u6027\u80fd\u6d4b\u8bd5\u51fd\u6570\u8c03\u7528<\/p>\n
\u5728\u5206\u6790\u4e00\u4e2a\u811a\u672c\u6216\u7f51\u9875\uff08\u4ee5\u53ca\u5176\u5305\u542b\u6587\u4ef6\uff09\u65f6\uff0c\u5c3d\u7ba1Benchmark_Timer()\u7279\u522b\u6709\u7528\uff0c\u4f46\u5b83\u5e76\u4e0d\u79d1\u5b66\uff0c\u56e0\u4e3a\u8981\u83b7\u5f97\u5206\u6790\u7684\u6570\u636e\u6211\u4eec\u5fc5\u987b\u591a\u6b21\u52a0\u8f7d\u811a\u672c\uff0c\u800c\u4e14\u5b83\u4e5f\u4e0d\u662f\u9488\u5bf9\u67d0\u4e2a\u7c7b\u6216\u51fd\u6570\u8c03\u7528\u7684\u3002<\/p>\n
PEAR::Benchmark\u5e93\u4e2d\u7684\u53e6\u4e00\u4e2a\u88ab\u79f0\u4f5cBenchmark_Iterator\u7684\u7c7b\u80fd\u591f\u5f88\u597d\u5730\u89e3\u51b3\u8fd9\u4e00\u4e2a\u95ee\u9898\uff0c\u5b83\u80fd\u591f\u9488\u5bf9\u7279\u5b9a\u7684\u51fd\u6570\u6216\u7c7b\u7684\u65b9\u6cd5\uff0c\u663e\u793a\u5176\u5206\u6790\u4fe1\u606f\u3002\u5b83\u7684\u7528\u9014\u662f\u80fd\u591f\u80fd\u591f\u4ece\u6d4b\u8bd5\u4e2d\u83b7\u5f97\u4e00\u81f4\u7684\u7ed3\u679c\uff0c\u56e0\u4e3a\u6211\u4eec\u77e5\u9053\uff0c\u5982\u679c\u8fd0\u884c\u4e00\u6bb5\u811a\u672c\u4e00\u6b21\uff0c\u5176\u8fd0\u884c\u65f6\u95f4\u4e3a10\u79d2\uff0c\u5e76\u4e0d\u610f\u5473\u7740\u5b83\u6bcf\u6b21\u7684\u8fd0\u884c\u65f6\u95f4\u603b\u662f10\u79d2\u3002<\/p>\n
In any case, let’s see some examples: <\/p>\n
\/\/ \u8fde\u63a5\u6570\u636e\u5e93\u7684\u4ee3\u7801<\/p>\n
\u3000\u3000include_once(“DB.php”);<\/p>\n
\u3000\u3000$dsn = array(<\/p>\n
\u3000\u3000’phptype’ => ‘mysql’,<\/p>\n
\u3000\u3000’hostspec’ => ‘localhost’,<\/p>\n
\u3000\u3000’database’ => ‘database_name’,<\/p>\n
\u3000\u3000’username’ => ‘user_name’,<\/p>\n
\u3000\u3000’password’ => ‘password’<\/p>\n
\u3000\u3000);<\/p>\n
\u3000\u3000$dbh = DB::connect($dsn); function getCreatedDate($id)<\/p>\n
\u3000\u3000{<\/p>\n
\u3000\u3000global $dbh; >$stmt = “SELECT created_date FROM users WHERE id=$id”;<\/p>\n
\u3000\u3000\/\/ \u5728\u8fd9\u91cc\u4f7f\u7528PEAR::DB<\/p>\n
\u3000\u3000$created_date = $dbh->getOne($stmt);<\/p>\n
\u3000\u3000if ((PEAR::isError($created_date)) || <\/p>\n
\u3000\u3000(empty($created_date))) {<\/p>\n
\u3000\u3000return false;<\/p>\n
\u3000\u3000} else {<\/p>\n
\u3000\u3000return $created_date;<\/p>\n
\u3000\u3000}<\/p>\n
\u3000\u3000}include_once ‘Benchmark\/Iterate.php’;<\/p>\n
\u3000\u3000$bench = new Benchmark_Iterate; \/\/ \u8fd0\u884cgetDate\u51fd\u657010\u6b21<\/p>\n
\u3000\u3000$bench->run(10, ‘getCreatedDate’, 1);\/\/ \u6253\u5370\u5206\u6790\u4fe1\u606f<\/p>\n
\u3000\u3000print_r($bench->get());<\/p>\n
\u3000\u3000?> <\/p>\n
\u8fd0\u884c\u4e0a\u9762\u7684\u4ee3\u7801\u80fd\u591f\u4ea7\u751f\u4e0e\u4e0b\u9762\u76f8\u4f3c\u7684\u7ed3\u679c\uff1a<\/p>\n
Array<\/p>\n
\u3000\u3000(<\/p>\n
\u3000\u3000[1] => 0.055413007736206<\/p>\n
\u3000\u3000[2] => 0.0012860298156738<\/p>\n
\u3000\u3000[3] => 0.0010279417037964<\/p>\n
\u3000\u3000[4] => 0.00093603134155273<\/p>\n
\u3000\u3000[5] => 0.00094103813171387<\/p>\n
\u3000\u3000[6] => 0.00092899799346924<\/p>\n
\u3000\u3000[7] => 0.0010659694671631<\/p>\n
\u3000\u3000[8] => 0.00096404552459717<\/p>\n
\u3000\u3000[9] => 0.0010690689086914<\/p>\n
\u3000\u3000[10] => 0.00093603134155273<\/p>\n
\u3000\u3000[mean] => 0.0064568161964417<\/p>\n
\u3000\u3000[iterations] => 10<\/p>\n
\u3000\u3000)<\/p>\n
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\u7ed3\u675f\u8bed<\/p>\n
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