Php/docs/function.shm-remove-var

• PHP Manual
• Semaphore 函数
• Removes a variable from shared memory

shm_remove_var

(PHP 4, PHP 5, PHP 7)

shm_remove_var — Removes a variable from shared memory

说明

shm_remove_var ( SysvSharedMemory $shm , int $key ) : bool

Removes a variable with a given key and frees the occupied memory.

参数

shm

A shared memory segment obtained from shm_attach().

key

The variable key.

返回值

成功时返回 true， 或者在失败时返回 false。

更新日志

版本	说明
8.0.0	shm expects a SysvSharedMemory instance now; previously, a resource was expected.

参见

• shm_remove() - Removes shared memory from Unix systems