can i search a mysql from the text in a drop down box?

[therelelogo]

Hi,

 

First off, heres my code:

<?php
//Start session
session_start();

//Include database connection details
require_once('emailconfig.php');

//Array to store validation errors
$errmsg_arr = array();

//Validation error flag
$errflag = false;

//Connect to mysql server
$link = mysql_connect(DB_HOST, DB_USER, DB_PASSWORD);
if(!$link) {
	die('Failed to connect to server: ' . mysql_error());
}

//Select database
$db = mysql_select_db(DB_DATABASE);
if(!$db) {
	die("Unable to select database");
}

//Function to sanitize values received from the form. Prevents SQL injection
function clean($str) {
	$str = @trim($str);
	if(get_magic_quotes_gpc()) {
		$str = stripslashes($str);
	}
	return mysql_real_escape_string($str);
}

//Sanitize the POST values
$email_from = clean($_POST['toname']);
$email_subject = clean($_POST['subject']);
$email_body = clean($_POST['main_email']);



//If there are input validations, redirect back to the registration form
if($errflag) {
	$_SESSION['ERRMSG_ARR'] = $errmsg_arr;
	session_write_close();
	header("location: standard_make_email_failed.php");
	exit();
}

//Create INSERT query
$qry = ("UPDATE emails SET e_read='NO' WHERE e_read='YES' and e_body = '$main_subject'");
$result = @mysql_query($qry);

//Check whether the query was successful or not
if($result) {
	header("location: standard_make_email_posted.php");
	exit();
}else {
	die("Query failed");
}
?>

 

the values are taken from a submit form on the previous page. now my question is regarding

 

$qry = ("UPDATE emails SET e_read='NO' WHERE e_read='YES' and e_body = '$main_subject'");

 

i want to search my column for the $main_subject' value (which is a label in the form on previous page, that gets data from the table). the code directs me to the location: standard_make_email_posted.php page so i know the code works, but the value in the table doesnt amend from NO to YES, is there any obvious mistakes in my code?

 

thanks for reading, all comments welcomed

[fenway]

Sorry, I don't follow.