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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

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User Contributed Notes 1 note

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romain dot ardiet at gmail dot com
7 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
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