php man page for gc_enable

GC_ENABLE(3)								 1							      GC_ENABLE(3)

gc_enable - Activates the circular reference collector

SYNOPSIS
       void gc_enable (void  )

DESCRIPTION
	Activates the circular reference collector, setting zend.enable_gc to 1.

PARAMETERS
       This function has no parameters.

RETURN VALUES
	No value is returned.

SEE ALSO
       Garbage Collection.

PHP Documentation Group 													      GC_ENABLE(3)