unable to enter data in mysql using php jquery and ajax -

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my mistake friends...below complete code writing jquery php bases register form code. seems code working fine unable enter data in mysql database. please let me know going wrong. below form:

        <!doctype html> <html> <head>  <link rel="stylesheet" type="text/css" media="all" href="home_style.css"> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>    <script>    $(document).ready(function(){       $("#ajax-contact-form").submit(function(){       var str = $(this).serialize();           $.ajax(          {          type: "post",         url:"contact.php",         data: str,         success:function(result)                 {                 $("#div1").html(result);                 }          });      return false;      });  }); </script>   </head> <body>  <div id="contact_form">   <form id="ajax-contact-form" name="contact" action="">  <fieldset>     <div class="field_container">first name:</label> <input type="text" name="cust_firstname" id="firstname"  maxlength="50" onblur="fnamevalidation()" style="width: 250px; height: 30px"; />    <div class="field_container">last name:</label> <input type="text" name="cust_lastname" id="lastname" maxlength="50" onblur="lnamevalidation()" style="width: 250px; height: 30px"; />   <div class="sex_check" > <input type="radio" name="cust_sex" type="radio" value="m" /> male <input type="radio" name="cust_sex" type="radio" value="f" /> female   <hr class="line_break">  <div class="field_container">email:</label> <input type="text" name="cust_email" id="email"  maxlength="100" onblur="emvalidation()" style="width: 250px; height: 30px"; />    <div class="field_container">password:</label> <input type='password' name='cust_password' id='password'  maxlength="12" onblur="pwordvalidation()" style="width: 250px; height: 30px"; />    <div class="field_container">confirm password:</label> <input type='password' name='cust_password2' id='confirmpassword'  maxlength="12" onblur="cpwordvalidation()" style="width: 250px; height: 30px"; />     <input class="button" type="submit" name="submit" value="register">   </fieldset>   </form> </div>   <div id="div1"> </div>    </body> </html>

and contact.php is

<?php ob_start();      session_start();      require_once("config.php");         $cust_firstname = stripslashes($_post['cust_firstname']);          $cust_lastname=stripslashes($_post['cust_lastname']);          $cust_sex=$_post['cust_sex'];      $cust_email=stripslashes($_post['cust_email']);      $cust_password=stripslashes($_post['cust_password']);      $cust_password2=stripslashes($_post['cust_password2']);       // values form        if(isset($_post['submit']))   {      // insert data mysql           $res = mysql_query("select * register cust_email = '$cust_email'");              if (mysql_num_rows($res)>0)                      {                      echo 'that email registered';                      exit;                      }              mysql_query("insert register (`cust_firstname`,`cust_lastname`, `cust_sex`, `cust_email`, `cust_password`)               values              ('$cust_firstname', '$cust_lastname', '$cust_sex', '$cust_email', '$cust_password')");              $_session['valid_user'] = $cust_email;       }         echo $cust_firstname;      echo $cust_lastname;      echo $cust_sex;      echo $cust_email;      echo $cust_password;      echo $cust_password2;        ?>

you should remove code in php file says if(isset($_post['submit'])). one, button name 'submit' (with lowercase s) , two, variable not send never true. should work. recommend @ html markup. totally invalid.


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