clearstatcache

clearstatcache -- Clears file stat cache

Description

void clearstatcache ( void)

Invoking the stat or lstat system call on most systems is quite expensive . Therefore , the result of the last call to any of the status functions ( listed below ) is stored for use on the next such call using the same filename . If you wish to force a new status check , for instance if the file is being checked many times and may change or disappear , use this function to clear the results of the last call from memory .

This value is only cached for the lifetime of a single request .