- var_dump: documentation ( source)
- gc_collect_cycles: documentation ( source)
- gc_enable: documentation ( source)
- gc_enabled: documentation ( source)
- gc_disable: documentation ( source)
<?php
gc_enable(); // Enable Garbage Collector
var_dump(gc_enabled()); // true
var_dump(gc_collect_cycles()); // # of elements cleaned up
gc_disable(); // Disable Garbage Collector