Script PHP pour trouver la première voyelle dans un nom

<?php
$name = ('joesph');
$check = array(1 => '$a','$e','$i','$o','$u');
$a  = "a";
$e  = "e";
$i  = "i";
$o  = "o";
$u  = "u";
$pos = strpos($name, $check);

// Note our use of ===. Simply == would not work as expected
// because the position of 'a' was the 0th (first) character.
if ($pos === false) {
  echo "'$check' was not found in the string '$name'";
} else {
  echo "The string '$check' was found in the string '$name'";
  echo " and exists at position $pos";
}
?>

<?php
function first_vowel($name)
{
  $vowels = array('A', 'E', 'I', 'O', 'U');
  $length = strlen($name);
  for ($i = 0; $i < $length; ++$i)
  {
    if (in_array($name[$i], $vowels))
    {
      return $name[$i];
    }
  }
  return '';
}
$input ="JOSEPH";
$firstvowel = first_vowel($input);
echo "The First Vowel is : ".$firstvowel;
?>