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PHP中if和or运行效率对比_php技巧

WBOY
Release: 2016-05-16 20:28:33
Original
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本文实例讲述了PHP中if和or运行效率对比。分享给大家供大家参考。具体实现方法如下:

对if和or的运行效率进行了实例说明,感兴趣的朋友可以测试一下,这里我测试了的结果是or 比if效率要高一些哦,具体代码如下:

复制代码 代码如下:
$t1 = microtime();
while($i     if(!defined('APP_PATH'));      // 0.011059 
    // defined('APP_PATH') OR 1;   // 0.009398 
    $i++; 

  
$t2 = microtime(); 
echo $t2 - $t1; 
?>

实例2:

复制代码 代码如下:
$t1 = microtime(); 
  
while($i     if(!defined('APP_PATH'));      //0.20043 
    // defined('APP_PATH') OR 1;   //0.107475 
    $i++; 

  
$t2 = microtime(); 
echo $t2 - $t1; 
?>

希望本文所述对大家的PHP程序设计有所帮助。

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