Login using PHP and MySQL not work -

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i create login form using php , mysql. process if user login there database show username on page. database:

id | username |    email    |         password ---------------------------------------------------------------------------------  1 |    x     |    x@y.c    | 642653d3f6d0a83db108b692de395f9cb8948651  2 |    y     |    y@y.c    | 642653d3f6d0a83db108b692de395f9cb8948651  3 |    z     |    z@y.c    | 642653d3f6d0a83db108b692de395f9cb8948651  4 |    w     |    w@y.c    | 642653d3f6d0a83db108b692de395f9cb8948651

and code is:

    <?php define('include_check',true); require 'db.php'; session_name('fllogin'); session_set_cookie_params(2*7*24*60*60); session_start(); if($_session['id'] && !isset($_cookie['flremember']) && !$_session['rememberme']) {     $_session = array();     session_destroy(); } if(isset($_get['logoff'])) {     $_session = array();     session_destroy();     header("location: index.php");     exit; } if($_post['submit']=='login') {     $err = array();     if(!$_post['email'] || !$_post['password'])         $err[] = 'all fields must filled in!';     if(!count($err))     {             $hasspass=md5($_post['password']);         $_post['email'] = mysql_real_escape_string($_post['email']);         $_post['password'] = mysql_real_escape_string($_post['password']);         $_post['rememberme'] = (int)$_post['rememberme'];         $row = mysql_fetch_assoc(mysql_query("select id,username,email database email='{$_post['email']}' , password='".$hasspass."'"));         if($row['email'])         {             $_session['email']=$row['email'];             $_session['id'] = $row['id'];             $_session['username'] = $row['username'];             $_session['rememberme'] = $_post['rememberme'];             setcookie('flremember',$_post['rememberme']);         }         else $err[]='wrong email and/or password!';     }     if($err)     $_session['msg']['login-err'] = implode('<br />',$err);     header("location: index.php");     exit; } ?> <html> <head> </head> <body> <div id="toppanel">     <div id="panel">         <div class="content clearfix">             <?php             if(!$_session['id']):             ?>             <div class="left">                 <form class="clearfix" action="" method="post">                     <?php                         if($_session['msg']['login-err'])                         {                             echo '<div class="err">'.$_session['msg']['login-err'].'</div>';                             unset($_session['msg']['login-err']);                         }                     ?>                     <input class="field" type="email" name="email" id="email"  placeholder="email" value="" size="23" />                     <input class="field" type="password" name="password" id="password" placeholder="password" size="23" />                     <label><input name="rememberme" id="rememberme" type="checkbox" checked="checked" value="1" /> &nbsp;remember me</label>                     <input type="submit" name="submit" value="login" class="bt_login" />                 </form>             </div>              <?php             else:             endif;             ?>         </div>     </div> <!-- /login -->                 <?php echo $_session['id'] ? $_session['username'] : ' ';?>                          <a href="#"><?php echo $_session['id']?'<a href="?logoff">log off</a>':'log in | register';?></a>      </body> </html>

its not worked. don't found error. please me.

try this:

$query = mysql_query("select id,username,email database email='{$_post['email']}' , password='".$hasspass."'"); if( mysql_num_rows($query) > 0 ) {    $row = mysql_fetch_assoc($query);    // save $_session values here... }else{    $err[]='wrong email and/or password!'; }

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