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<?php //php program to create a function that check whether character passed to it as argument is vowel or not using switch case statement function checkvowel($ch) { switch($ch) { case 'a': print('you entered a vowel'); break; case 'e': print('you entered a vowel'); break; case 'i': print('you entered a vowel'); break; case 'o': print('you entered a vowel'); break; case 'u': print('you entered a vowel'); break; default:print('please enter a vowel (a,e,i,o,u)'); } } checkvowel('a'); print('<br>'); checkvowel('b'); ?>