How to use ajax to submit data and background verification for PHP login
Editor to share with you how to use PHP login to submit data and background verification using ajax, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!
1. Front desk ajax data submission
The backend management system logs in to $("# login_btn") .click (function () {var username = $.trim ($("# username"). Val ()); var password = $.trim ($("# password"). Val ()); if (username = = ") {alert (" Please enter user name "); return false } else if (password = = "") {alert ("Please enter password"); return false;} / / ajax to verify var data= {username:username,password:password}; $.ajax ({type: "POST", url: "_ _ CONTROLLER__/check_login", data:data, dataType:'json', success:function (msg) {/ / alert (msg) If (msg==1) {_ window.location.href = "{: U ('Index/personal')}";} else {alert ("login failed, please try again!);});})
two。 Background check:
* * / public function check_login () {$password=I ('param.password'); $username=I (' param.username'); $data ["name"] = $username; $user=M ('systemuser'); $list=$user- > where ($data)-> find (); $return=0 If ($listings = "") {if ($list ['password'] = = md5 ($password) & & $list [' status'] = = 1) {/ / login time and login IP $public = new PublicController (); $lastlogonip=$public- > ip_address (); $time=$time=date ("Y-m-d H:i:s", time ()); $where=array ('id'= > $list [' id']) $user- > where ($where)-> save (array ('lastlogonip'= > $lastlogonip,'lastlogontime'= > $time)); $this- > login ($list); $return=1;// login success}} else {$return=2;// login failure} $this- > ajaxReturn ($return);}
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