在preg_replace

Question

我有这个代码

        $address = preg_replace('/\bk\b/u', 'ko', $address);
        $address = preg_replace('/\bs\b/u', 'sda', $address);
        $address = preg_replace('/asd/', 'asda', $address);
        $address = preg_replace('/ds/', 'dsa', $address);
        $address = preg_replace('/wa/', 'wqa', $address);
        $address = preg_replace('/fd/', 'fda', $address);
        $address = preg_replace('/xs/', 'xss', $address);

我想在preg_replace中创建循环，并放置模式和替换此代码。 然后我想要1个preg_replace

$address = preg_replace('$first_array', '$second_array', $address);

我第一次尝试

        $replacement = array('k' =>'ko' , 's' => 'sda' , 'asd' => 'asda');

但是我确实不知道如何完成这段代码