![]() If the variable is referenced from another places.If the variable is part of the reference set. ![]() Here we’re storing also the type of variable, its value and some pieces of info: This is a data structure implemented in C and it represents any PHP value (number, string, array, etc.). How it works? Well, we already know that a variable in PHP is stored in a container called “zval” (Zend Value), from C language. You can enable or disable the associated functions using some parameters from code or from internal config files. The PHP’s Garbage Collector is an internal system that allows PHP to keep the memory clean. ![]() If a GC action happens after the session was made eligible for the GC, it will be deleted. Since it is GC, the session value may be discarded and not compulsory. Initially If the user’s last visit happened before 200,000s then this session is eligible for garbage collection. This value is for the server: It is a setting for Session Garbage Collection. What do they mean? Let’s see… GC_MAXLIFETIME Make sure the user is logged out when close tab / window / session.įor which we will first need to understand some basic concepts:. ![]()
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