77 lines
2.1 KiB
PHP
77 lines
2.1 KiB
PHP
<?php
|
|
/**
|
|
* Convenience class for iterating over an array in reverse order.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
* http://www.gnu.org/copyleft/gpl.html
|
|
*
|
|
* @file
|
|
* @since 1.27
|
|
*/
|
|
|
|
/**
|
|
* Convenience class for iterating over an array in reverse order.
|
|
*
|
|
* @since 1.27
|
|
*/
|
|
class ReverseArrayIterator implements Iterator, Countable {
|
|
/** @var array */
|
|
protected $array;
|
|
|
|
/**
|
|
* Creates an iterator which will visit the keys in $array in
|
|
* reverse order. If given an object, will visit the properties
|
|
* of the object in reverse order. (Note that the default order
|
|
* for PHP arrays and objects is declaration/assignment order.)
|
|
*
|
|
* @phpcs:ignore MediaWiki.Commenting.FunctionComment.ObjectTypeHintParam
|
|
* @param array|object $array
|
|
*/
|
|
public function __construct( $array = [] ) {
|
|
if ( is_array( $array ) ) {
|
|
$this->array = $array;
|
|
} elseif ( is_object( $array ) ) {
|
|
$this->array = get_object_vars( $array );
|
|
} else {
|
|
throw new InvalidArgumentException( __METHOD__ . ' requires an array or object' );
|
|
}
|
|
|
|
$this->rewind();
|
|
}
|
|
|
|
public function current() {
|
|
return current( $this->array );
|
|
}
|
|
|
|
public function key() {
|
|
return key( $this->array );
|
|
}
|
|
|
|
public function next() {
|
|
prev( $this->array );
|
|
}
|
|
|
|
public function rewind() {
|
|
end( $this->array );
|
|
}
|
|
|
|
public function valid() {
|
|
return key( $this->array ) !== null;
|
|
}
|
|
|
|
public function count() {
|
|
return count( $this->array );
|
|
}
|
|
}
|