Input
Output
<?php // Define a character $char = 'E'; $char = strtolower($char); // Convert to lowercase // Check if the character is a vowel if ($char == 'a' || $char == 'e' || $char == 'i' || $char == 'o' || $char == 'u') { echo "$char is a vowel."; } else if (ctype_alpha($char)) { echo "$char is a consonant."; } else { echo "Invalid input! Please enter an alphabet character."; } ?>