stream_supports_lock
(PHP 5 >= 5.3.0, PHP 7, PHP 8)
stream_supports_lock — Tells whether the stream supports locking
说明
Tells whether the stream supports locking through flock().
参数
stream-
The stream to check.
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romain dot ardiet at gmail dot com ¶
10 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备份地址：http://www.lvesu.com/blog/php/function.stream-supports-lock.php