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class runtime
{
var $StartTime = 0;
var $StopTime = 0;

function get_microtime()
{
list($usec, $sec) = explode(' ', microtime());
return ((float)$usec + (float)$sec);
}

function start()
{
$this->StartTime = $this->get_microtime();
}

function stop()
{
$this->StopTime = $this->get_microtime();
}

function spent()
{
return round(($this->StopTime - $this->StartTime) * 1000, 1);
}

}


//Àý×Ó
$runtime= new runtime;
$runtime->start();

//ÄãµÄ´úÂ뿪ʼ

$a = 0;
for($i=0; $i<1000000; $i++)
{
$a += $i;
}

//ÄãµÄ´úÂë½áÊø

$runtime->stop();
echo "Ò³ÃæÖ´ÐÐʱ¼ä: ".$runtime->spent()." ºÁÃë";


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<?php
interface User
{
 function getName();
 function setName($_name);
}
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class NormalUser
{
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<?php
header("Content-type:text/html","Charset=UTF-8");
$file="config/config.php";
if(is_writable($file)!=null){
 echo "Îļþ¿ÉдÈë \n";
}else{
 echo "Îļþ²»¿Éд|";
 exit();
}
if(isset($_POST["install"])){
 $string = "<?php \n";
 $string .="\$mysql_host=\"$_P ......

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