map_deep - Documentation

WordPress Version: 4.5

/**
 * Maps a function to all non-iterable elements of an array or an object.
 *
 * This is similar to `array_walk_recursive()` but acts upon objects too.
 *
 * @since 4.4.0
 *
 * @param mixed    $value    The array, object, or scalar.
 * @param callable $callback The function to map onto $value.
 * @return mixed The value with the callback applied to all non-arrays and non-objects inside it.
 */
function map_deep($value, $callback)
{
    if (is_array($value)) {
        foreach ($value as $index => $item) {
            $value[$index] = map_deep($item, $callback);
        }
    } elseif (is_object($value)) {
        $object_vars = get_object_vars($value);
        foreach ($object_vars as $property_name => $property_value) {
            $value->{$property_name} = map_deep($property_value, $callback);
        }
    } else {
        $value = call_user_func($callback, $value);
    }
    return $value;
}

WordPress Version: 4.1

/**
 * Maps a function to all non-iterable elements of an array or an object.
 *
 * This is similar to `array_walk_recursive()` but acts upon objects too.
 *
 * @since 4.4.0
 *
 * @param mixed    $value    The array, object, or scalar.
 * @param callable $callback The function to map onto $value.
 * @return The value with the callback applied to all non-arrays and non-objects inside it.
 */
function map_deep($value, $callback)
{
    if (is_array($value)) {
        foreach ($value as $index => $item) {
            $value[$index] = map_deep($item, $callback);
        }
    } elseif (is_object($value)) {
        $object_vars = get_object_vars($value);
        foreach ($object_vars as $property_name => $property_value) {
            $value->{$property_name} = map_deep($property_value, $callback);
        }
    } else {
        $value = call_user_func($callback, $value);
    }
    return $value;
}

WordPress Version: 4.4

/**
 * Maps a function to all non-iterable elements of an array or an object.
 *
 * This is similar to `array_walk_recursive()` but acts upon objects too.
 *
 * @since 4.4.0
 *
 * @param mixed    $value    The array, object, or scalar.
 * @param callable $callback The function to map onto $value.
 * @return The value with the callback applied to all non-arrays and non-objects inside it.
 */
function map_deep($value, $callback)
{
    if (is_array($value) || is_object($value)) {
        foreach ($value as &$item) {
            $item = map_deep($item, $callback);
        }
        return $value;
    } else {
        return call_user_func($callback, $value);
    }
}