PHP array_remove and array_remove_assoc

<?php
/**
 * Removes the given value from the given array.
 *
 * Returns either FALSE if the value was not found in the array
 * or the index at which the value was found and removed.
 * 
 * $array = array('a', 'b', 'c', 'd');
 * assert( array_remove( 'b', $array ) == 1 );
 * assert( array( 'a', 'c', 'd' ) == $array );
 * assert( array_remove( 'z', $array ) === false );
 * assert( array( 'a', 'c', 'd' ) == $array );
 *
 * @param mixed $val The value to remove
 * @param array $array The array from which to remove the value
 * @author Dimitry Zolotaryov, http://old.webit.ca
 * @returns FALSE or the index at which the value was found
 */
function array_remove( $val, &$array ) {
    foreach ( $array as $i => $v ) {
        if ( $v == $val ) {
            array_splice( $array, $i, 1 );
            return $i;
        }
    }
    return false;
}
 
/**
 * Removes the given value from the given associative array.
 *
 * Returns either FALSE if the value was not found in the array
 * or the key at which the value was found and removed.
 *
 * $array2 = array( 'a' => 1, 'b' => 2, 'c' => 3, 'd' => 4 );
 * assert( array_remove_assoc( 1, $array2 ) == 'a' );
 * assert( array( 'b' => 2, 'c' => 3, 'd' => 4 ) == $array2 );
 * 
 * @param mixed $val The value to remove
 * @param array $array The associative array from which to remove the value
 * @author Dimitry Zolotaryov, http://old.webit.ca
 * @returns FALSE or the index at which the value was found
 */
function array_remove_assoc( $val, &$array ) {
    foreach ( $array as $key => $value ) {
        if ( $value == $val ) {
            unset( $array[ $key ] );
            return $key;
        }
    }
    return false;
}