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  • php递归循环地区

    $mylist = array(
        array( 'area_parent_id'=>0,'id'=>1,'area_name' => '河北',),
        array( 'area_parent_id'=>0,'id'=>2,'area_name' => '山东',),
        array( 'area_parent_id'=>0,'id'=>3,'area_name' => '辽宁',),
        array( 'area_parent_id'=>2,'id'=>4,'area_name' => '济南',),
        array( 'area_parent_id'=>2,'id'=>5,'area_name' => '德州',),
        array( 'area_parent_id'=>3,'id'=>6,'area_name' => '沈阳',),
        array( 'area_parent_id'=>3,'id'=>7,'area_name' => '大连',),
        array( 'area_parent_id'=>4,'id'=>8,'area_name' => '济南县1',),
        array( 'area_parent_id'=>5,'id'=>9,'area_name' => '德州县1',),
        array( 'area_parent_id'=>5,'id'=>10,'area_name' => '德州县2',)
    );
    
    $arr = array (
            1 => array ( 'area_name' => '河北', 'area_parent_id' => '0', ),
            2 => array ( 'area_name' => '山东', 'area_parent_id' => '0', ),
            3 => array ( 'area_name' => '石家庄','area_parent_id' => '1',),
            4 => array ( 'area_name' => '唐山','area_parent_id' => '1'),
            5 => array ( 'area_name' => '济南','area_parent_id' => '2'),
            6 => array ( 'area_name' => '青岛','area_parent_id' => '2'),
    );
    
    function moreList($arr, $p_id){    //数据层级化,
        $r = array();
        foreach($arr as $key=>$val){
            if($val['area_parent_id'] == $p_id) {
                $length = count($r);//0
                $r[$length] = $val;
                    
                if($t = moreList($arr,$val['id'])){//$key
                    $r[$length]['children'] = $t;
                }
                    
            }
        }
        return $r;
    }
    echo '<pre>';
    print_r(moreList($mylist,0));//$arr
    echo '</pre>';
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  • 原文地址:https://www.cnblogs.com/longfeiPHP/p/5036931.html
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