Ajax submit phone number go to database validation and return status value instance in detail

This article is mainly for everyone to introduce the AJAX submitted mobile phone number to database verification and return the status of the relevant data, with a certain reference value, interested in small partners can refer to, hope to help everyone.

<script type= "Text/javascript" > $ (Function () {$ ('. Agree_regi '). Click (function () {  var phone = $.trim ($ ("#") Phone "). Val ());  if (phone = = "") {  Newalert (2, "Please enter phone number", null);  return false;  } else{   var reg =/^0?1[3|4|5|8| 7][0-9]\d{8}$/;   if (!reg.test (phone)) {    Newalert (2, "Please enter a valid mobile number", null);     return false;    }  }  var data ={  Phone:phone,  };    $.ajax ({  type: "POST",  URL: "{: U (' Register/phonefind ')}",  Data:data,  success:function (msg) {   if (msg== ' 0 ') {   Newalert (2, "phone number is wrong", null);   }   if (msg== ' 1 ') {   Newalert (2, "the mobile number is already registered, please login directly", null);   }   if (msg== ' 2 ') {   location.href= "/register/regowner?phone=" +phone;   }   if (msg== ' 3 ') {   location.href= "/register/regnest?phone=" +phone;}});}  ); });</script>

The backend receives the Ajax commit value, goes to the database query, and returns.

public function Phonefind () {if (!empty (I (' Param.phone '))) {//i method gets the value of the post commit $phone = I (' param   . Phone ');   $user = M ("Cuser"); $res = $user->where (Array (' phone ' = $phone))->find (); Go to the database query one, and return the IF (!empty ($res [' password ')) {$status =1;//password exists, the user directly login}elseif (!empty ($res)) {$status =2;//exists,         No password, set password, is the owner of}else{$status =3;//does not exist, is a visitor, registration}}else{$status =0;//mobile phone number is wrong} $this->ajaxreturn ($status); Returns the status value to the foreground}