PHP Manual
Semaphore 函数
Returns a variable from shared memory

shm_get_var

(PHP 4, PHP 5, PHP 7)

shm_get_var — Returns a variable from shared memory

说明

shm_get_var ( resource $shm_identifier , int $variable_key ) : mixed

shm_get_var() returns the variable with a given variable_key, in the given shared memory segment. The variable is still present in the shared memory.

参数

shm_identifier: Shared memory segment, obtained from shm_attach().
variable_key: The variable key.

返回值

Returns the variable with the given key.

参见

shm_has_var() - Check whether a specific entry exists
shm_put_var() - Inserts or updates a variable in shared memory

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