stream_supports_lock()
stream_supports_lock() — Tells whether the stream supports locking.
Built-in function of PHP 8.5. The manual lists it as available in PHP 5 >= 5.3.0, PHP 7, PHP 8. This page is the reference card: signature, parameters and return value, plus the changelog and the example the manual provides.
Signature
stream_supports_lock(resource $stream): bool
Parameters
| Parameter | Type | What it takes |
|---|---|---|
| $stream | resource | The stream to check. |
Return value
Returns true on success or false on failure.
Example
The PHP manual ships no example for stream_supports_lock(); the signature and the parameter table above are the contract.
See also
All PHP 8.5 built-in functions
Reference card built from the PHP manual page stream_supports_lock() (PHP documentation, CC BY 3.0). The page is generated from the manual, so the wording of the parameter and return value text follows php.net.