[Magento 2] Catalog Helpers

magento2-catalog-guide.php

<?php

function isPalindrome($text) {
  $text = preg_replace('/[^a-zA-Z]/', '', $text);
  $text = strtolower($text);
  
  if (strrev($text) == $text) {   
    return true;   
  } else { 
    return false; 
  } 
}

test.php

<?php

function isPalindrome($text) {
  $text = preg_replace('/[^a-zA-Z]/', '', $text);
  $text = strtolower($text);
  
  if (strrev($text) == $text) {   
    return true;   
  } else { 
    return false; 
  } 
}