gc_collect_cycles()
gc_collect_cycles() — Forces collection of any existing garbage cycles.
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
gc_collect_cycles(): int
Parameters
This function takes no parameters.
Return value
Returns number of collected cycles.
Example
The PHP manual ships no example for gc_collect_cycles(); the signature and the parameter table above are the contract.
Changelog
| Version | Change |
|---|---|
| 8.5.0 | The return value no longer includes strings and resources that were indirectly collected through cycles. |
All PHP 8.5 built-in functions
Reference card built from the PHP manual page gc_collect_cycles() (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.