php - A form (action) error -

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i have question, have page , form direct edit data database. need way use form , redirect action=editcinemas.php?cinema_id=the id of cinema

 <html> <body> <form name="form3" method="post" action="editcinemas.php"> //my problem here guess     <td>         <table>         <?php require('../classes/cinema_class.php'); $cinema=new cinema($_get["cinema_id"]);  $cinemas = $cinema->get_all_cinemas();  foreach ($cinemas $movie) {     $cinema_id = $movie['cinema_id'];     $cinema_name = $movie['cinema_name'];     $cinema_location = $movie['cinema_location'];  }     echo "<input name='cinemaid' type='hidden' id='cinemaid' value=" . $cinema_id . '><br/>';     echo "cinema name :";     echo "<input name='cinemaname' type='text' id='cinemaname' value=" . $cinema_name . '><br/>';     echo "cinema location :";     echo "<input name='cinemalocation' type='text' id='cinemalocation' value=" . $cinema_location . '><br/>'; ?> </table> <input type="submit" name="edit" value="edit">      <input type="reset" name="reset" value="reset"/><input type="button" value="back" onclick="history.go(-1);return true;">  </form> </body></html>   <?php $cinemaid=$_post['cinemaid']; $cinemaname=$_post['cinemaname']; $cinemalocation=$_post['cinemalocation']; if ($_post) {  if(empty($cinemaname)){   echo  "cinema name must"; } else{ $update_movie=mysql_query("update `memoire`.`cinema`                          set `cinema_name`= '$cinemaname', `cinema_location`= '$cinemalocation'                          `cinema_id`='$cinemaid'"); if($update_movie) { header("refresh: 0;url=../listallcinemas.php");} else { echo "error in registration".mysql_error(); }  } ?>

just append it, this:

<form name="form3" method="post" action="editcinemas.php?cinema_id=<?php echo $_get["cinema_id"]; ?>">

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