PHP 致命错误：允许的内存大小为 268435456 字节已用尽（试图分配 XX 字节）
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PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate XX bytes)
提问by waki
Initially, it was stated in the settings of 128MB, then I got this error, I thought that maybe did not have enough memory, then I increased to 256MB, but the error continues.
一开始是在128MB的设置里说的，后来出现这个错误，我以为可能是内存不够，后来我增加到256MB，但是错误依旧。
String in code with this error:
出现此错误的代码中的字符串：
function clean($str) {
$clean_str = stripslashes (trim($str));
return $clean_str;
}
// clean slashes
foreach($result[$i] as $key=>$value) {
if($key=="currency") continue;
$result[$i][$key] = clean($result[$i][$key]);
}
Why is this happening ?
为什么会这样？
回答by zeantsoi
Modify your php.inito increase your memory_limitto something higher than what you have currently provisioned – 512MB is not unusual for modern day applications.
修改您的值php.ini以将其增加到memory_limit高于您当前配置的值 – 512MB 对于现代应用程序来说并不罕见。
回答by Kzqai
256MB (the default these days, and the amount that 268435456 bytes amounts to), is a lot of memory for a script, so if you're exceeding it, the first things to check for are a few scenarios:
256MB（这些天的默认值，以及 268435456 字节的总和）对于脚本来说是很大的内存，所以如果你超过了它，首先要检查的是几个场景：
An infinite loop will exhaust the memory limit:
无限循环将耗尽内存限制：
var $storage = null;
while(true){
$storage += 'infinity!'; // Or something even more resource requiring.
}
Alternatively, if you are pulling data from a database and accidentally pull too much from a table with a lot of data, and no limit in the sql statement, that can exhaust your php script memory:
或者，如果您从数据库中提取数据，并且不小心从包含大量数据的表中提取了太多数据，并且 sql 语句中没有限制，则可能会耗尽您的 php 脚本内存：
select * from users where true; // On a million-row table, this could do it.
So in general, this message is about the script exhausting it's memory, but it's usually not a call to raise the limit so much as a call to figure out why your script is misbehaving.
所以总的来说，这条消息是关于脚本耗尽内存的，但通常不是提高限制的呼吁，而是找出脚本行为不当的原因。
回答by Eric
I was getting these errors all of a sudden about a day and a half ago in my error logs when trying to activate plugins. Which was causing blank/white screens.
大约一天半前，当我尝试激活插件时，我的错误日志中突然出现了这些错误。这导致空白/白屏。
"mod_fcgid: stderr: PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 491520 bytes) in wp-content/plugins/w3-total-cache/lib/W3/ConfigKeys.php on line 1329"
“mod_fcgid：stderr：PHP 致命错误：第 1329 行的 wp-content/plugins/w3-total-cache/lib/W3/ConfigKeys.php 中允许的内存大小为 268435456 字节已耗尽（试图分配 491520 字节）”
"mod_fcgid: stderr: PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 491520 bytes) in wp-content/plugins/w3-total-cache/lib/W3/ConfigKeys.php on line 1329"
“mod_fcgid：stderr：PHP 致命错误：第 1329 行的 wp-content/plugins/w3-total-cache/lib/W3/ConfigKeys.php 中允许的内存大小为 268435456 字节已耗尽（试图分配 491520 字节）”
upping the memory_limit in the php.ini or .htaccess did not fix the issue for me. I had to go into the php settings for the domain and turn the safe mode option from "default" or "off" to "on" using Plesk.
提高 php.ini 或 .htaccess 中的 memory_limit 并没有解决我的问题。我必须进入域的 php 设置并使用 Plesk 将安全模式选项从“默认”或“关闭”转为“开启”。
