ZZCX_yii/common/components/zComponents.php

<?php
/**
 * Created by PhpStorm.
 * User: wangxj
 * Date: 2017/5/27
 * Time: 18:10
 */

namespace common\components;


use yii\helpers\ArrayHelper;

class zComponents
{
    /**
     * User: wangxj
     *
     * 和ArrayHelper::map区别
     * 供dropDownList在<option >添加额外属性<option data-type='type1' >
     * $result = ArrayHelper::map($array, 'type', 'name', 'id')
     *
     * $array = [
     *     ['id' => '123', 'name' => 'aaa', 'class' => 'x', 'type' => 'type1'],
     *     ['id' => '124', 'name' => 'bbb', 'class' => 'x', 'type' => 'type1'],
     *     ['id' => '345', 'name' => 'ccc', 'class' => 'y', 'type' => 'type2'],
     * ];
     *
     * // the result is:
     * // [
     * //     '123' => [
     * //         'type' => 'type1',
     * //     ],
     * //     '124' => [
     * //         'type' => 'type1',
     * //     ],
     * //     '345' => [
     * //         'type' => 'type2',
     * //     ],
     * // ]
     *
     * @param $array
     * @param $from
     * @param $to
     * @param null $group
     * @return array
     */
    public static function map($array, $from, $to, $group = null)
    {
        $result = [];
        foreach ($array as $element) {
            $key = ArrayHelper::getValue($element, $from);
            $value = ArrayHelper::getValue($element, $to);
            if ($group !== null) {
                $result[ArrayHelper::getValue($element, $group)][$key] = $value;
            } else {
                $result[$key] = $value;
            }
        }

        return $result;
    }
}