gc_mem_caches

Function • Return type changed in PHP 8.0

Reclaims memory used by the Zend Engine memory manager.

PHP 5
PHP 7.0
Added
PHP 7.1-7.4
PHP 8.0
Improved
PHP 8.1
PHP 8.2-8.3
PHP 8.4
PHP 8.5
PHP 8.6

gc_mem_caches Function synopsis

gc_mem_caches(): int

Parameters

gc_mem_caches does not take any parameters.

Return value

Typeint

Returns the number of bytes freed.

Changes to the gc_mem_caches Function

PHP 8.0

  • Return type added: int
- gc_mem_caches()
+ gc_mem_caches(): int

PHP 7.0

  • Function added

gc_mem_caches Function Availability

PHP VersionAvailability
PHP 8.6Upcoming Release Yes
PHP 8.5Supported (Latest) Yes
PHP 8.4Supported Yes
PHP 8.3Security-Fixes Only Yes
PHP 8.2Security-Fixes Only Yes
PHP 8.1Unsupported Yes
PHP 8.0Unsupported Yes
PHP 7.4Unsupported Yes
PHP 7.3Unsupported Yes
PHP 7.2Unsupported Yes
PHP 7.1Unsupported Yes
PHP 7.0Unsupported Yes
PHP 5.6Unsupported No
PHP 5.5Unsupported No
PHP 5.4Unsupported No
PHP 5.3Unsupported No