/**
 * 计算页面加载时间
 *
 * @param 
 * @arrange (512.笔记) jb51.cc
 **/
$start = time();
 
// put a long operation in here
sleep(2);
 
 
$diff = time() - $start;
 
print "This page needed $diff seconds to load :-)";
 
// if you want a more exact value,you could use the 
// microtime function


/***   来自编程之家 jb51.cc（jb51.cc）   ***/