有没有办法获取以字节为单位的PHP变量的大小? [英] Is there a way I get the size of a PHP variable in bytes?

问题描述

我目前有一个使用Zend Framework的PHP CLI脚本，该脚本在运行时似乎正在使用越来越多的内存.它遍历了从数据库中以1000个为一批的大量模型循环.对memory_get_usage()的调用表明该脚本的内存使用率一直在增加.

I currently have a PHP CLI script using Zend Framework extensively which seems to be using a ever larger amount of memory as it runs. It loops through a large set of models retrieved from a database in batches of 1000. Calls to memory_get_usage() show that the memory usage of the script is always increasing.

尽管要确保在每次迭代后都取消设置模型，并实际上使用array_shift()来减小每次迭代中模型数组的大小.

This is despite making sure that I'm unsetting the model after every iteration and actually using array_shift() to reduce the size of the array of models on every iteration.

我的问题是，在PHP中，有一种方法可以发现变量的内存大小，以便我可以跟踪正在增长的变量吗?

My question is, in PHP is there a way of discovering the size-in-memory of a variable so I can track what's growing?

推荐答案

我没有解决方案来检查每个变量的大小，但是如果使用

i don't have a solution to check the size of every variable, but if you use doctrine its probably the reason

您需要使用

   $Elem->free(true);

另一件事是升级到5.3(如果您尚未这样做的话)，

another thing is to upgrade to 5.3 (if you dont do it yet), the garbage collector of 5.3 is better

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