note 15249 added to function.array-shift

Note that array_shift() is mixed and returns the REMOVED element, not the shifted array! A statement like $array = array_shift( array_flip( $array ) ); returns the first key of $array, not the flipped and shifted $array. You must use: $array = array_flip( $array ); array_shift( $array ); to let $array contain the shifted array. This applies to many functions in the array context so look out for the returned types, before looking for bugs! http://php4.globe.de/manual/en/function.array-shift.php