How to clear user cache in APCu? - caching

Question

I have tried to clear the user cache using this PHP code and access it from the browser:
<?php
apc_clear_cache();
apc_clear_cache('user');
apc_clear_cache('opcode');
echo json_encode(array(
'success' => true,
));
but it doesn't work.
(I am using these tools to see if it's working or not https://rtcamp.com/tutorials/php/zend-opcache/ )
Also when the user cache gets full, it doesn't restart from 0. The APCu just stops working.
I have tried to set apc.user_ttl=0, but APCu doesn't recognize it.
My settings are:
extension=apcu.so
apc.enabled=1
apc.shm_size=10240M
apc.ttl=7200
apc.enable_cli=1
apc.gc_ttl=3600
apc.entries_hint=4096
apc.slam_defense=0
apc.enable_cli = 1
apc.user_ttl=0
apc.serializer=igbinary

Answer 1

<?php
if (extension_loaded('apc')) {
echo "APC-User cache: " . apc_clear_cache('user') . "\n";
echo "APC-System cache: " . apc_clear_cache() . "\n";
}
if (extension_loaded('apcu')) {
echo "APCu cache: " . apcu_clear_cache() . "\n";
}
if (function_exists('opcache_reset')) {
// Clear it twice to avoid some internal issues...
opcache_reset();
opcache_reset();
}

Answer 2

The tool you are using is for Opcache, it doesn't know about APCu.
The script you need to look at the status of APCu is:
PHP 7: https://github.com/krakjoe/apcu/blob/master/apc.php
PHP 5: https://github.com/krakjoe/apcu/blob/PHP5/apc.php
If you believe you have found a bug, please report it on github.