{"id":1077,"date":"2010-03-12T09:12:00","date_gmt":"2010-03-12T01:12:00","guid":{"rendered":"\/?p=1077"},"modified":"2010-03-12T09:12:00","modified_gmt":"2010-03-12T09:12:00","slug":"1077","status":"publish","type":"post","link":"https:\/\/blog.vimge.com\/archives\/php\/1077.html","title":{"rendered":"\u5728\u751f\u4ea7\u73af\u5883\u4e2d\u4f7f\u7528php\u6027\u80fd\u6d4b\u8bd5\u5de5\u5177xhprof"},"content":{"rendered":"<p>&#160;&#160;&#160;&#160;&#160;&#160; xhprof\u662ffacebook\u5f00\u6e90\u51fa\u6765\u7684\u4e00\u4e2aphp\u6027\u80fd\u6d4b\u8bd5\u5de5\u5177\uff0c\u4e5f\u53ef\u4ee5\u79f0\u4e4b\u4e3aprofile\u5de5\u5177\uff0c\u8fd9\u4e2a\u8bcd\u4e0d\u77e5\u9053\u600e\u4e48\u7ffb\u8bd1\u624d\u6bd4\u8f83\u8fbe\u610f\u3002\u8ddf\u4e4b\u524d\u4e00\u76f4\u4f7f\u7528\u7684xdebug\u76f8\u6bd4\uff0c\u6709\u5f88\u591a\u7c7b\u4f3c\u4e4b\u5904\u3002\u4ee5\u524d\u5bf9xdebug\u6709\u4e00\u4e9b\u8bb0\u5f55\u8fd8\u53ef\u4ee5\u4f9b\u53c2\u8003\uff0c\u4f46\u662f\u5b83\u7684\u7f3a\u70b9\u662f\u5bf9\u6027\u80fd\u5f71\u54cd\u592a\u5927\uff0c\u5373\u4fbf\u662f\u5f00\u542f\u4e86profiler_enable_trigger\u53c2\u6570\uff0c\u7528\u5728\u751f\u4ea7\u73af\u5883\u4e2d\u4e5f\u662f\u60e8\u4e0d\u5fcd\u7779\uff0ccpu\u7acb\u523b\u5c31\u98d9\u5230high\u3002<\/p>\n<p>\u800cxhprof\u5c31\u663e\u5f97\u5f88\u8f7b\u91cf\uff0c\u662f\u5426\u8bb0\u5f55profile\u53ef\u4ee5\u7531\u7a0b\u5e8f\u63a7\u5236\uff0c\u56e0\u6b64\uff0c\u7528\u5728\u751f\u4ea7\u73af\u5883\u4e2d\u4e5f\u5c31\u6210\u4e3a\u4e00\u79cd\u53ef\u80fd\u3002\u5728\u5b83\u7684\u6587\u6863\u4e0a\u53ef\u4ee5\u770b\u5230\u8fd9\u6837\u4e00\u79cd\u7528\u6cd5\uff1a<\/p>\n<p>\u4ee5\u4e07\u5206\u4e4b\u4e00\u7684\u51e0\u7387\u542f\u7528xhprof\uff0c\u5e73\u65f6\u6084\u6084\u7684\u4e0d\u6253\u67aa\u3002<br \/>PLAIN TEXT<br \/>PHP: <br \/>if (mt_rand(1, 10000) == 1) {<br \/>xhprof_enable(XHPROF_FLAGS_MEMORY);<br \/>$xhprof_on = true;<br \/>} <\/p>\n<p>\u5728\u7a0b\u5e8f\u7ed3\u5c3e\u5904\u8c03\u7528\u65b9\u6cd5\u4fdd\u5b58profile<br \/>PLAIN TEXT<br \/>PHP: <br \/>if ($xhprof_on) {<br \/>\/\/ stop profiler<br \/>$xhprof_data = xhprof_disable();<\/p>\n<p>\/\/ save $xhprof_data somewhere (say a central DB)<br \/>&#8230;<br \/>} <\/p>\n<p>\u4e5f\u53ef\u4ee5\u7528register_shutdown_function\u65b9\u6cd5\u6307\u5b9a\u5728\u7a0b\u5e8f\u7ed3\u675f\u65f6\u4fdd\u5b58xhprof\u4fe1\u606f\uff0c\u8fd9\u6837\u5c31\u514d\u53bb\u4e86\u7ed3\u5c3e\u5904\u5224\u65ad\uff0c\u7ed9\u4e2a\u6539\u5199\u7684\u4e0d\u5b8c\u6574\u4f8b\u5b50\uff1a<br \/>PLAIN TEXT<br \/>PHP: <br \/>if (mt_rand(1, 10000) == 1) {<br \/>xhprof_enable(XHPROF_FLAGS_MEMORY);<br \/>register_shutdown_function(create_funcion(&#8221;, &quot;$xhprof_data = xhprof_disable(); 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