genesisvh
asked on
How to make sure username and password is case sensitive.
I have a validation php script that checks the registration form. I want it to make sure it checks the username and password is case sensitive.
//validate fields
if(!$_POST["username"] || !$_POST["email"] || !$_POST["password1"] || !$_POST["password2"]){
echo "<p> </p><p> </p><p> </p><br />Please fill the required fields, <p> </p><p> </p><a href='register.php'>Go to register page</a>";
//validate password
}else if($_POST["password1"] != $_POST["password2"]){
echo "<p> </p><p> </p><p> </p><br />Please go back, PASSWORDS do not match! <p> </p><p> </p><a href='register.php'>Go to register page</a>";
//validate password length
}else if(strlen($_POST["password1"]) < 6){
echo "<p> </p><p> </p><p> </p><br />Please go back, PASSWORD is too short! <p> </p><p> </p><a href='register.php'>Go to register page</a>";
//validate username length
}else if(strlen($_POST["username"]) < 5){
echo "<p> </p><p> </p><p> </p><br />Please go back, USERNAME is too short! MUST BE BETWEEN 5 to 10 characters.<p> </p><p> </p><a href='register.php'>Go to register page</a>";
//validate email
}else if(!(eregi("^.+@.+\\..+$", $_POST['email']))){
echo "<p> </p><p> </p><p> </p><br />Please enter a valid EMAIL! <a href='register.php'><p> </p><p> </p>Go to register page</a>";
//validate captcha
}else if(($_SESSION['security_code'] != $_POST['security_code']) || (empty($_SESSION['security_code'])) ){
echo "<p> </p><p> </p><p> </p><br />CAPTCHA CODE does not match! <p> </p><p> </p><a href='register.php'>Go to register page</a>";
}else{
$conn= mysql_connect($servername,$username,$password)or die(mysql_error());
mysql_select_db("",$conn);
// check if already registered
$sql_check = "SELECT * FROM users WHERE email = '".$_POST[email]."'";
$result_check = mysql_query($sql_check,$conn) or die(mysql_error());
$row = mysql_fetch_assoc($result_check);
if($row['id']){
echo "<p> </p><p> </p><p> </p><br />EMAIL already registered! <p> </p><p> </p><a href='register.php'>Go to register page</a>";
Lukasz Chmielewski
If you calculate hash value (like md5 or sha1) for the password and store it in the database like this, it IS case sensitive, md5("somepassword") <> md5(Somepassword). If this is what you mean... Or you want to check if there are big and small letters ?
your code already case sensitive i think, though i think usually password is case sensitive but username is case insensitive. in case you want to make it case insensitive, use function strtoupper to compare them.
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If you are just looking to make sure they cased it the same in a password box and a confirm password box you can use strcmp()
http://www.php.net/manual/en/function.strcmp.php
http://www.php.net/manual/en/function.strcmp.php
ASKER
Yup You got it