PHP - Manual: opcache_reset

2024-11-15

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opcache_reset

(PHP 5 >= 5.5.0, PHP 7, PHP 8, PECL ZendOpcache >= 7.0.0)

opcache_reset — 重置字节码缓存的内容

说明

opcache_reset(): boolean

该函数将重置整个字节码缓存。在调用 opcache_reset() 之后，所有的脚本将会重新载入并且在下次被点击的时候重新解析。

参数

此函数没有参数。

返回值

如果字节码缓存被重置成功，则返回 true；如果字节码缓存被禁用，则返回 false。

参见

opcache_invalidate() - 废除脚本缓存

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User Contributed Notes 7 notes

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fbgolly at gmail dot com ¶

4 years ago


My workaround to clear cache via CLI is create a bash script like this:

#!/bin/bash
WEBDIR=/var/www/html/
RANDOM_NAME=$(head /dev/urandom | tr -dc A-Za-z0-9 | head -c 13)
echo "<?php opcache_reset(); ?>" > ${WEBDIR}${RANDOM_NAME}.php
curl http://localhost/${RANDOM_NAME}.php
rm ${WEBDIR}${RANDOM_NAME}.php

put it in /usr/local/bin/opcache-clear and make it executable. 
When I want to clear cache I simply run "opcache-clear" inside terminal.

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Anonymous ¶

6 years ago


It should be mentioned that opcache_reset() does not reset cache when executed via cli. 
So `php -r "var_dump(opcache_reset());"` outputs "true" but doesn't clean cache. Make file, access it via http - and cache is clean.

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mike ¶

5 years ago


In some (most?) systems PHP's CLI has a separate opcode cache to the one used by the web server or PHP-FPM process, which means running opcache_reset() in the CLI won't reset the webserver/fpm opcode cache, and vice-versa.

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-3

Jan ¶

2 years ago


For longer php scripts: opcache_reset() will obtain a lock and it will reset the cache only after the script has ended, after which the lock is released.

Calling opcache_reset() multiple times or any other opcache manipulation method, like opcache_invalidate(), after calling opcache_reset() in a single script is not useful: while opcache_reset() holds the lock, other opcache methods will return false and they will have zero effect on the cache.

Although the opcache manipulation methods have no effect during this lock, opcache does recache scripts corresponding to the opcache.revalidate_freq setting, provided that opcache.validate_timestamps is switched on.

To keep the cache up to date, use opcache_invalidate() when modifying single  php files. Use opcache_reset() for bigger changes and only at the end of a php script.

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-5

erutan409 at hotmail dot com ¶

3 years ago


So, I thought I'd share something that might benefit those looking for a way to reset opcache in CLI.

As an example in my case, I'm running a Laravel app with a router script with the built-in web server for local development.  I enabled opcache with the following run configuration:

/path/to/php.exe -d zend_extension=php_opcache.dll -d opcache.enable_cli=1 -d opcache.memory_consumption=128 -d opcache.max_accelerated_files=10000 -d opcache.validate_timestamps=0 -d opcache.save_comments=0 -t project_path/public/ server.php

This is basically what artisan serve is doing behind the scenes, anyway, except without the opcache part.

I have some file watchers setup to detect changes and executes the following upon said change(s):

/path/to/php.exe -d zend_extension=php_opcache.dll -d opcache.enable_cli=1 -r "opcache_reset();"

The key is ensuring that you're enabling opcache in CLI.  I've been using this for some time, so I can attest to this being a viable solution without needing to create a script to execute somewhere in the document root, etc.

I'm only referring to Laravel as an example of why I chose to explore options for solving this problem.  This should translate to any scenario a developer would need to utilize opcache in their project(s) while using the built-in web server.

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-22

Marsius777 ¶

4 years ago


Run this to clear cache php -r 'opcache_reset();'

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-29

antoine dot vdsk at gmail dot com ¶

6 years ago


For people who have difficulties with constants and opcache_reset().
If you include a file with constant and do an opcache_reset() in the same file, you'll probably have some error like :

"Notice: Constant already defined"

The trick is to call opcache_reset() in an isolated file, then include another file that include the file with constants.

File a.php
<?php
opcache_reset();
include 'b.php'
?>

File b.php
<?php
include 'constants.php';
?>

File constants.php
<?php
define('MY_CONST', 'abcdef');
?>

With this trick, the opcache will be reset in a.php and when b.php will be included, the constants will not be in cache anymore.

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官方地址：https://www.php.net/manual/en/function.opcache-reset.php

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opcache_reset

说明

参数

返回值

参见

User Contributed Notes 7 notes