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--TEST-- json_encode() & endless loop - 3 --SKIPIF-- <?php if (!extension_loaded("json")) print "skip"; ?> --FILE-- <?php $a = array(); $a[] = $a; var_dump($a); var_dump(json_encode($a)); echo "Done\n"; ?> --EXPECTF-- array(1) { [0]=> array(0) { } } string(4) "[[]]" Done