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--TEST-- Bug #21998 (array_pop() does not reset the current array position) --FILE-- <?php $a = array("a", "b", "c"); var_dump(key($a)); var_dump(array_pop($a)); var_dump(key($a)); var_dump(array_pop($a)); var_dump(key($a)); var_dump(array_pop($a)); var_dump(key($a)); ?> --EXPECT-- int(0) string(1) "c" int(0) string(1) "b" int(0) string(1) "a" NULL