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
PHP - Manual: stream_supports_lock
2024-11-14
(PHP 5 >= 5.3.0, PHP 7, PHP 8)
stream_supports_lock — Tells whether the stream supports locking
$stream
): boolTells whether the stream supports locking through flock().
stream
The stream to check.
成功时返回 true
, 或者在失败时返回 false
。
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
官方地址:https://www.php.net/manual/en/function.stream-supports-lock.php