Code: Select all
<?php
if (isset($_POST['palindrome']) && strlen($_POST['palindrome']) > 1) {
//A value has been passed and is longer than 2 characters.
$check=$_POST['palindrome'];
if ($check === strrev($check)) {
//The value passed is a palindrome
echo $check." is a palindrome!";
}
elseif ($check !== strrev($check)) {
//The value passed is not a palindrome
echo $check." is not a palindrome!";
}
}
else {
//An invalid value was passed.
echo "An invalid value was passed, sorry.";
}
?>