sending jquery generated form to php -


i below script not work. trying pass values generated using jquery function php. when run code it. form slides right, no values encoded. thinking doing simple wrong. 

<!doctype html>  <html>    <head>      <title>target example</title>      <?php  	  $x = $_post['total'];  	    	  echo $x;  	    	  ?>  	    	<link rel="stylesheet" href="http://code.jquery.com/mobile/1.0b1/jquery.mobile-1.0b1.css" />      <script src="http://code.jquery.com/jquery-1.6.1.min.js"></script>      <script src="http://code.jquery.com/mobile/1.0b1/jquery.mobile-1.0b1.js"></script>  	<script>  	  $(document).ready(function() {  	    function compute() {            var = $('#a').val();            var b = $('#b').val();            var total = * b;            $('#total').val(total);          }            $('#a, #b').change(compute);  		  	  });  	</script>    </head>    <body>    <form action="<?php echo $php_self;?>" method="post">    	<div data-role="page" id="irr">        <div data-role="header">          <h1>calculation</h1>        </div>        <div data-role="content">          <div data-role="fieldcontain">            <label for="a">diameter:</label>            <input type="number" name="a" id="a" value=""  />            <label for="b">diver:</label>            <input type="number" name="b" id="b" value=""  />            <label for="total">result:</label>            <input type="text" name="total" id="total" value=""  />            <input type="submit">          </div>          did here?        </div>       </div>  	  </form>    </body>  </html>

your form action not set correctly. use $_server['script_name'] instead. also, used short hand echo feature in case wondering. fixes :) 

<!doctype html>     <html>       <head>         <title>target example</title>         <?php           $x = $_post['total'];            echo $x;            ?>          <link rel="stylesheet" href="http://code.jquery.com/mobile/1.0b1/jquery.mobile-1.0b1.css" />         <script src="http://code.jquery.com/jquery-1.6.1.min.js"></script>         <script src="http://code.jquery.com/mobile/1.0b1/jquery.mobile-1.0b1.js"></script>         <script>           $(document).ready(function() {             function compute() {               var = $('#a').val();               var b = $('#b').val();               var total = * b;               $('#total').val(total);             }              $('#a, #b').change(compute);            });         </script>       </head>       <body>       <form action="<?=($_server['script_name'])?>" method="post">         <div data-role="page" id="irr">           <div data-role="header">             <h1>calculation</h1>           </div>           <div data-role="content">             <div data-role="fieldcontain">               <label for="a">diameter:</label>               <input type="number" name="a" id="a" value=""  />               <label for="b">diver:</label>               <input type="number" name="b" id="b" value=""  />               <label for="total">result:</label>               <input type="text" name="total" id="total" value=""  />               <input type="submit">             </div>             did here?           </div>          </div>           </form>       </body>     </html>

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