WP_CLI\Utils

iterator_map() │ WP-CLI 1.0

Like array_map(), except it returns a new iterator, instead of a modified array.

Example:

$arr = array('Football', 'Socker');

$it = iterator_map($arr, 'strtolower', function($val) {
  return str_replace('foo', 'bar', $val);
});

foreach ( $it as $val ) {
  var_dump($val);
}

No Hooks.

Returns

Object. An iterator that applies the given callback(s).

Usage

iterator_map( $it, $fn );

$it(array|object) (required)

Either a plain array or another iterator.

$fn(callable) (required)

The function to apply to an element.

iterator_map() iterator map code ^{WP-CLI 2.13.0-alpha}

function iterator_map( $it, $fn ) {
	if ( is_array( $it ) ) {
		$it = new ArrayIterator( $it );
	}

	if ( ! method_exists( $it, 'add_transform' ) ) {
		$it = new Transform( $it );
	}

	foreach ( array_slice( func_get_args(), 1 ) as $fn ) {
		$it->add_transform( $fn );
	}

	return $it;
}