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<?php
/**
* Array helper functions.
*
* @package Meta Box
*/
/**
* Array helper class.
*
* @package Meta Box
*/
class RWMB_Helpers_Array {
/**
* New array map function that accepts more params than just values.
* Params: array|item, callback, other params.
*
* @return array
*/
public static function map() {
$args = func_get_args();
$items = array_shift( $args );
$callback = array_shift( $args );
if ( ! is_array( $items ) ) {
array_unshift( $args, $items );
return call_user_func_array( $callback, $args );
}
return array_map(
function( $item ) use ( $callback, $args ) {
array_unshift( $args, $item );
return call_user_func_array( $callback, $args );
},
$items
);
}
/**
* Convert a comma separated string to array.
*
* @param string $csv Comma separated string.
* @return array
*/
public static function from_csv( $csv ) {
return is_array( $csv ) ? $csv : array_filter( array_map( 'trim', explode( ',', $csv . ',' ) ) );
}
/**
* Change array key.
*
* @param array $array Input array.
* @param string $from From key.
* @param string $to To key.
*/
public static function change_key( &$array, $from, $to ) {
if ( isset( $array[ $from ] ) ) {
$array[ $to ] = $array[ $from ];
}
unset( $array[ $from ] );
}
/**
* Flatten an array.
*
* @link https://stackoverflow.com/a/1320156/371240
*
* @param array $array Input array.
* @return array
*/
public static function flatten( $array ) {
$return = array();
array_walk_recursive(
$array,
function( $a ) use ( &$return ) {
$return[] = $a;
}
);
return $return;
}
/**
* Ensure a variable is an array.
* @param mixed $input Input value.
* @return array
*/
public static function ensure( $input ) {
return (array) $input;
}
}
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