connect(); if ($link->errno != 0){ // 数据库连接失败 Response::json_response(-1,"数据库连接失败!",null); exit(); } // sql语句 select * from aiya_user where username = $mobile $query = "select * from ".TABLE_USER." where username = '".$mobile."'"; // echo $query; // echo '
'; // 开始执行查询 mysqli_query($link, $query); $num = $link->affected_rows; if ($num){// 说明查询出了结果 只要不为0 就是真 Response::json_response(-1,"当前账号已经被注册,请直接登录!",null); }else{ Response::json_response(0,"恭喜你，该账号可以注册！",null); } mysqli_close($link);