Check whether a character is vowel or consonant in php

Check whether a character is vowel or consonant

Following is sample php code.

<?php
  // 	Check whether a character is vowel or consonant
  function checkIsVowelOrConstant($char = null) {
    if (empty($char)) {
      return 'Please provide input.';
    }
    
    if (strlen($char) != 1) {
      return "Please provide a single character.";
    }
    
    if (in_array($char, ['a', 'e', 'i', 'o', 'u'])) {
      return "Given character is vowel";
    }
    
    return "Given character is consonant";
  }
  
  echo checkIsVowelOrConstant('f');
?>