Update query PHP MySQL
You have to have single quotes around any VARCHAR content in your queries. So your update query should be:
mysql_query("UPDATE blogEntry SET content = '$udcontent', title = '$udtitle' WHERE id = $id");Also, it is bad form to update your database directly with the content from a POST. You should sanitize your incoming data with the mysql_real_escape_string function.
Without knowing what the actual error you are getting is I would guess it is missing quotes. try the following:
mysql_query("UPDATE blogEntry SET content = '$udcontent', title = '$udtitle' WHERE id = '$id'")
Need to add quote for that need to use dot operator:
mysql_query("UPDATE blogEntry SET content = '".$udcontent."', title = '".$udtitle."' WHERE id = '".$id."'");