key               558 ext/spl/spl.php function key();
key               843 ext/spl/spl.php function key() {/**/}
key              1004 ext/spl/spl.php function key() {/**/}
key              1057 ext/spl/spl.php function key() {/**/}
key              1115 ext/spl/spl.php function key() {/**/}