[PHP知识库]php常用自定义方法

// 无限极分类 转换成tree结构 
function getTree($list) {
    $tree = [];
    $list = array_column($list, null, 'id');
    foreach($list as $val){
        if(isset($list[$val['pid']])) {
            $list[$val['pid']]['children'][] = &$list[$val['id']];
        } else {
            $tree[] = &$list[$val['id']];
        }
    }
    return $tree;
}

$a = [
	['id' => 1, 'pid' => 0, 'name' => '安徽省', '666' => '111'],
	['id' => 2, 'pid' => 1, 'name' => '合肥市', '666' => '111'],
	['id' => 3, 'pid' => 2, 'name' => '蜀山区', '666' => '111'],
	['id' => 4, 'pid' => 2, 'name' => '经开区', '666' => '111'],

	['id' => 5, 'pid' => 0, 'name' => '河南省', '666' => '111'],
	['id' => 6, 'pid' => 5, 'name' => '开封市', '666' => '111'],
	['id' => 7, 'pid' => 1, 'name' => '六安市', '666' => '111'],
	['id' => 8, 'pid' => 7, 'name' => '裕安区', '666' => '111'],

	['id' => 9, 'pid' => 4, 'name' => '经开区中环城', '666' => '111'],
	['id' => 10, 'pid' => 9, 'name' => '经开区中环城一楼', '666' => '111'],
	['id' => 11, 'pid' => 9, 'name' => '经开区中环城二楼', '666' => '111'],
];

$a = getTree($a);
myPrint($a);

// 身份证 手机号 正则判断
if(!preg_match("/^1[3456789]\d{9}$/", $data)){
    $result['msg'] = '手机号码不正确';
    $this->ajaxReturn($result);
}

if(!preg_match("/^(\d{15}$|^\d{18}$|^\d{17}(\d|X|x))$/", $data)){
    $result['msg'] = '身份证号码不正确';
    $this->ajaxReturn($result);
}

// 用习惯的自定义打印方法

function myPrint($data, $var_dump = 0, $is_die = 1)
{
    echo '<pre>';
    if ($var_dump) {
        var_dump($data);
    } else {
        print_r($data);
    }
    if ($is_die) {
    	die;
    }
}