Routine improve performance

example-routine-improve-performance.php

<?php

// When place the code in a routine, you can easily optimize the code
// Example: 
// You can optimize the code inside the routine below
function isTooLong($string) {
  if(strlen($string) > 20) {
    return true; 
  } else {
    return false;  
  }
}
// With
function isTooLong($string) {
  return strlen($string) > 20 ? return true : return false;
}