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<?php
$password= "pass123";
if (isset($_POST['password']) && !empty($_POST['password']))
{
$new_password=$_POST['password'];
if(md5($new_password)==md5($password))
{
echo "<br> Correct password ";
}
else{
echo "<br> Incorrect password ";
}
}
?>
<form action="md5.php" method="post">
<input type="text" name="password">
<br>
<input type="submit" >
</form>