PHP - Manual: shm_has_var
2024-11-15
(PHP 5 >= 5.3.0, PHP 7, PHP 8)
shm_has_var — Check whether a specific entry exists
$shm
$key
Checks whether a specific key exists inside a shared memory segment.
shm
A shared memory segment obtained from shm_attach().
key
The variable key.
Returns true if the entry exists, otherwise false
true
false
官方地址:https://www.php.net/manual/en/function.shm-has-var.php