Program to find a string is Palindrome or Not in Php

<?php

$word = "Malayalam";  // declaring a varibale

echo "String: " . $word . "<br>";

$reverse = strrev($word); // reversing word

if ($word == $reverse) // comparing if original word is same as the reverse of the same word

    echo 'Output: The string is a palindrome';

else

    echo 'Output: This is not a palindrome';

?>

Find the string palindrome or not in PHP without using strrev() function.

<?php

$mystring = "madam"; // set the string

echo "String: " . $mystring;

$myArray = array(); // php array

$myArray = str_split($mystring); // split the array

$len = sizeof($myArray); // get the size of array

$newString = "";

for ($i = $len; $i >= 0; $i--) {

    $newString.=$myArray[$i];

}

echo "<br>";

if ($mystring == $newString) {

    echo "Output: " . $mystring . " is a palindrome";

} else {

    echo "Output: " . $mystring . " is not a palindrome";

}

?>