I need to clear all APC cache entries when I deploy a new version of the site. APC.php has a button for clearing all opcode caches, but I don't see buttons for clearing all User Entries, or all System Entries, or all Per-Directory Entries.
Is it possible to clear all cache entries via the command-line, or some other way?
You can use the PHP function apc_clear_cache
.
Calling apc_clear_cache()
will clear the system cache and calling apc_clear_cache('user')
will clear the user cache.
I don't believe any of these answers actually work for clearing the APC cache from the command line. As Frank Farmer commented above, the CLI runs in a process separate from Apache.
My solution for clearing from the command line was to write a script that copies an APC clearing script to the web
directory and accesses it and then deletes it. The script is restricted to being accessed from the localhost.
apc_clear.php
This is the file that the script copies to the web directory, accesses, and deletes.
<?php
if (in_array(@$_SERVER['REMOTE_ADDR'], array('127.0.0.1', '::1')))
{
apc_clear_cache();
apc_clear_cache('user');
apc_clear_cache('opcode');
echo json_encode(array('success' => true));
}
else
{
die('SUPER TOP SECRET');
}
Cache clearing script
This script copies apc_clear.php to the web directory, accesses it, then deletes it. This is based off of a Symfony task. In the Symfony version, calls are made to the Symfony form of copy and unlink, which handle errors. You may want to add checks that they succeed.
copy($apcPaths['data'], $apcPaths['web']); //'data' is a non web accessable directory
$url = 'http://localhost/apc_clear.php'; //use domain name as necessary
$result = json_decode(file_get_contents($url));
if (isset($result['success']) && $result['success'])
{
//handle success
}
else
{
//handle failure
}
unlink($apcPaths['web']);