Password validating

I am trying to validate conf开发者_JS百科irm passwords in PHP using JavaScript by this code:

if($_POST['PasswordField']== $_POST['ConfirmPassword'] && $_POST['PasswordField']>='8')
{
    echo "Succed <br>";
}
else
{
    echo "filed <br>";
}

It works well with matching the two passwords, but the length of the password is not working. But if I enter a password which is less than 8 character it succeeds - why is this?

Also, how can I check password strength using JavaScript but not using Regular expressions?

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You should use the strlen() method to get the length of the string that is contained in $_POST['PasswordField']. And you should not check it with a string '8'. So it needs to be like:

<?php
    function isPasswordValid($password1, $password2){
        if(strlen($password1) >= 8)    
           if($password1 == $password2) 
                return true;

        return false;
   }
?>

Call this method with the two values from your POST. Also, use trim() to strip whitespaces. Ohw...and it has nothing to do with JavaScript.

---

For password length you need to use strlen

...&& strlen($_POST['PasswordField']) >= 8)...

---

if($_POST['PasswordField']== $_POST['ConfirmPassword'] && strlen($_POST['PasswordField'])>8 && $_POST['PasswordField']>='8')
{
    echo "Succeed <br>";
}
else
{
    echo "failed<br>";
}

---

You need the strlen(); function to get the length of the password.

http://php.net/manual/en/function.strlen.php

if (strlen($_POST['PassWordField']) > 8){
//do stuff
}