stream_supports_lock

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

stream_supports_lock — Tells 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() - 可移植的协同文件锁定

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romain dot ardiet at gmail dot com ¶

11 years ago

This method returns TRUE on custom wrappers by default if you don't implement the stream_lock() method inside the wrapper : http://php.net/manual/en/streamwrapper.stream-lock.php