php - PHP内存分配限制原因

Question

我有 2 台服务器

两台服务器都具有相同的 php memory_limit 128M 数据。

我的开发服务器运行脚本很好，而在我的产品服务器上我收到一个致命错误：允许的内存大小为 134217728 字节已用尽（尝试分配 32 字节）...

我的问题是，即使我的 php memory_limits 相同，我也会在 prod 环境中耗尽内存的其他原因是什么？

Answer 1

前言

PHP 是在 Apache [HTTPD 服务器] 之上运行的模块，这涉及将 php 解释器与网络服务器发布的挂钩库链接

原因

Now it can exhaust due to scripts running allocating memory [RAM] & reach its threshold & get such errors.

Example big loops running & saving lots of data in memory which may over RUN the Memory

你可以做的可能的优化

memory_limit = 32M to your server's main php.ini file (recommended, if you have access)
php_value memory_limit 32M in your .htaccess file in the 

这些是针对内存不足的页面的一些解决方法

ini_set('memory_limit', '-1'); overrides the default PHP memory limit (On individual php pages wherever you need extra memory)

您还可以在 HTTP Server（apache.conf 或 http.conf）上进行一些优化

RLimitCPU,RLimitNPROC, RLimitMEM parameters can be adusted

由于您的内存不足，您可以调整 RLimitMEM

Syntax: RLimitMEM soft-bytes [hard-bytes]
Example: RLimitMEM 1048576 2097152

This directive sets the soft and hard limits for maximum memory usage of a process in bytes. It takes one or two parameters. The first parameter sets the soft resource limit for all processes. The second parameter sets the maximum resource limit. Either parameter can be a number, or ``max'', which indicates to the server that the limit should match the maximum allowed by the operating system configuration. Raising the maximum resource limit requires the server to be running as the user ``root'' or in the initial start-up phase.

您也可以将这些行放入 .htaccess 文件中[因为在共享主机中您无权访问 php.ini 和 http.conf 文件