PHP Manual
Stream Functions
Tells whether the stream supports locking

stream_supports_lock

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

stream_supports_lock — Tells whether the stream supports locking

Description

stream_supports_lock(resource $stream): bool

Tells whether the stream supports locking through flock().

Parameters

stream: The stream to check.

Return Values

Returns true on success or false on failure.

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