I have to post a value via "form post" and insert it into table, here is my code in both files: \[code\]<html><body><table><form enctype="multipart/form-data" action="<?php $_SERVER["DOCUMENT_ROOT"] ?> /contents/ad_posting_process_4.php" method="post"><?php $cat_no = "101010"; ?><input type=hidden id="category" value="http://stackoverflow.com/questions/12729337/<?php echo $cat_no; ?>"> <tr> <td>Sub Category: </td><td> <input type=text id="sub_category" > </td><tr><td></td> <td><input type="submit" name="action" value="http://stackoverflow.com/questions/12729337/Post"></td></tr></tr></form></body></html>\[/code\]here is ad_posting_4.php\[code\]<?php session_start();include($_SERVER["DOCUMENT_ROOT"]."/includes/conn.php");$category = mysql_real_escape_string($_POST['category']);$sub_category = mysql_real_escape_string($_POST['sub_category']);echo "category=". $category; echo "sub_category=". $sub_category; ?>\[/code\]No value sent through post.where am I wrong?Regards: