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--TEST-- GC 007: Unreferenced array cycle --INI-- zend.enable_gc=1 --FILE-- <?php $a = array(array()); $a[0][0] =& $a[0]; var_dump($a[0]); var_dump(gc_collect_cycles()); unset($a); var_dump(gc_collect_cycles()); echo "ok\n" ?> --EXPECT-- array(1) { [0]=> &array(1) { [0]=> *RECURSION* } } int(0) int(1) ok