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Bejson.com
PHP Manual
Semaphore 函數
Removes a variable from shared memory

shm_remove_var

(PHP 4, PHP 5, PHP 7, PHP 8)

shm_remove_var — Removes a variable from shared memory

說(shuō)明

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

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

參數

shm: A shared memory segment obtained from shm_attach().
key: The variable key.

返回值

成功時(shí)返回 true，或者在失敗時(shí)返回 false。

更新日志

版本	說(shuō)明
8.0.0	`shm` expects a SysvSharedMemory instance now; previously, a resource was expected.

參見(jiàn)

shm_remove() - Removes shared memory from Unix systems

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