orderBy

用于对操作的结果排序。

基本用法

默认DESC排序规则

$builder->orderBy('col1', 'ASC')->get('getTable');
$builder->where('col1',2)->orderBy('col1', 'ASC')->get('getTable');

ORDER BY FIELD

可以通过第三个参数实现

$array = [
    'a',
    'b'
];
$builder->orderBy('', 'DESC', $array)->get('getTable');

实现原理

if (is_array($customFieldsOrRegExp)) {
    foreach ($customFieldsOrRegExp as $key => $value) {
        $customFieldsOrRegExp[$key] = preg_replace("/[^\x80-\xff-a-z0-9\.\(\),_` ]+/i", '', $value);
    }
    $orderByField = 'FIELD (' . $orderByField . ', "' . implode('","', $customFieldsOrRegExp) . '")';
}

ORDER BY REGEXP

可以通过第三个参数实现

实现原理

if (is_string($customFieldsOrRegExp)) {
    $orderByField = $orderByField . " REGEXP '" . $customFieldsOrRegExp . "'";
}

传参说明

方法原型

function orderBy($orderByField, $orderbyDirection = "DESC", $customFieldsOrRegExp = null)

• $orderByField 排序字段
• $orderbyDirection 排序规则
• $customFieldsOrRegExp 其他条件