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Homephp教程PHP源码php 内存使用信息代码

<script>ec(2);</script>

通过侦测脚本的内存使用情况,有利于代码的优化。PHP 提供了一个垃圾收集器和一个非常复杂的内存管理器。脚本执行时所使用的内存量,有升有跌。为了得到当前的内存使用情况,我们可以使用 memory_get_usage() 函数。如果需要获得任意时间点的最高内存使用量,则可以使用 memory_limit() 函数。view sourceprint?01 echo "Initial:

 代码如下 复制代码

".memory_get_usage()." bytes "; 

02 /* prints 

03 Initial: 361400 bytes 

04 */

05   

06 // let's use up some memory 

07 for ($i = 0; $i

08  $array []= md5($i); 

09 } 

10   

11 // let's remove half of the array 

12 for ($i = 0; $i

13  unset($array[$i]); 

14 } 

15   

16 echo "Final: ".memory_get_usage()." bytes "; 

17 /* prints 

18 Final: 885912 bytes 

19 */

20   

21 echo "Peak: ".memory_get_peak_usage()." bytes "; 

22 /* prints 

23 Peak: 13687072 bytes 

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