stream_supports_lock

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

stream_supports_lockTells whether the stream supports locking

说明

stream_supports_lock(resource $stream): bool

Tells whether the stream supports locking through flock().

参数

stream

The stream to check.

返回值

成功时返回 true, 或者在失败时返回 false

参见

  • flock() - 轻便的咨询文件锁定