php 致命错误：X:\wamp\www\xxx 中的内存不足（已分配 1134559232）（试图分配 32768 字节）
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Fatal error: Out of memory (allocated 1134559232) (tried to allocate 32768 bytes) in X:\wamp\www\xxx
提问by Arash
I am using WAMP server(32 bits)on local host on my personal PC. I have a big (very big) multidimensional array which gets its information by reading a CSV file which contains long sentences(the CSV file contains 20,000 row of information). The problem is that I get the following error when it goes through some calculations:
我在个人 PC 上的本地主机上使用WAMP 服务器（32 位）。我有一个大（非常大）多维数组，它通过读取包含长句子的 CSV 文件（CSV 文件包含 20,000 行信息）来获取其信息。问题是我在进行一些计算时收到以下错误：
Fatal error: Out of memory (allocated 1134559232) (tried to allocate 32768 bytes) in x:\wamp\www\xxx
致命错误：x:\wamp\www\xxx 中的内存不足（已分配 1134559232）（试图分配 32768 字节）
I tried different solutions like increasing upload_max_filesize, post_max_size, max_file_uploadsand memory_limitor set it to -1 in php.ini or at the beginning of my scripts also, no one works. Please help me, and please do not ask me to re-architect my codes or change the version of WAMP, due to some reasons it is not possible. Thank you very much. :)
我尝试了不同的解决方案，如增加upload_max_filesize，post_max_size，max_file_uploads且memory_limit或将其设置为-1在php.ini或在我的脚本的开始也没有人的作品。请帮助我，请不要让我重新构建我的代码或更改 WAMP 的版本，由于某些原因这是不可能的。非常感谢。:)
回答by Arash
Finally I could find the solution. I found that when the PHP collection garbage is getting full, there is no way to free it. Unsetand gc_collect_cycles()also are not effective. The only way is to use Functionover different section of codes. In my case, I had a big script in a for loop, so I copied all my codes in a function, and in my loop I call the function. Each time function quiets, memory gets free. You may test it by adding memory_get_usage()once in your function and once out of the function to see the difference.
最后我找到了解决方案。我发现当PHP收集垃圾越来越满时，没有办法释放它。Unset而且gc_collect_cycles()也没有效果。唯一的方法是使用Function不同的代码段。就我而言，我在 for 循环中有一个大脚本，所以我将所有代码复制到一个函数中，并在我的循环中调用该函数。每次函数安静时，内存就会得到释放。您可以通过memory_get_usage()在函数中添加一次和从函数中添加一次来测试它以查看差异。
回答by robjingram
It's none of those settings, it is memory_limit, the max amount of memory that a PHP script can consume. However, be sure that your server has enough resources before arbitrarily increasing this setting.
这些设置都不是，而是memory_limitPHP 脚本可以消耗的最大内存量。但是，在随意增加此设置之前，请确保您的服务器有足够的资源。
回答by Sharanya Dutta
Put this line at the beginning of your code:
将此行放在代码的开头：
ini_set("memory_limit", -1);
The PHP manual gives the following description of memory_limit:
PHP手册给出了以下描述memory_limit：
This sets the maximum amount of memory in bytes that a script is allowed to allocate. This helps prevent poorly written scripts for eating up all available memory on a server. Note that to have no memory limit, set this directive to -1.
Prior to PHP 5.2.1, in order to use this directive it had to be enabled at compile time by using --enable-memory-limit in the configure line. This compile-time flag was also required to define the functions memory_get_usage()and memory_get_peak_usage()prior to 5.2.1.
When an integeris used, the value is measured in bytes. Shorthand notation, as described in this FAQ, may also be used.
这设置了允许脚本分配的最大内存量（以字节为单位）。这有助于防止编写不当的脚本来耗尽服务器上的所有可用内存。请注意，要没有内存限制，请将此指令设置为 -1。
在 PHP 5.2.1 之前，为了使用这个指令，它必须在编译时通过在配置行中使用 --enable-memory-limit 来启用。在 5.2.1 之前，还需要此编译时标志来定义函数memory_get_usage()和memory_get_peak_usage()。
I don't know what makes them so confident that only poorly written scriptsneed to adjust this setting but I hope this brief introduction fulfils your need anyway.
我不知道是什么让他们如此自信，以至于只有写得不好的脚本才需要调整此设置，但我希望这个简短的介绍无论如何都能满足您的需求。
