<?php
 
Function punyaHuruf (string $kataPertama, string $kataKedua): bool{
	$firstWord = str_split($kataPertama);
	$secWord = str_split($kataKedua);
 
	foreach ($secWord as $Key) {
		if(!in_array($Key, $firstWord)){
			return false;
		}
	}
 
	return true;
 
}
 
$kalimatPertama = "INDONESIA";
$kalimatKedua ="SHINTAEYONG";
$kalimatKetiga = "SHINTAEYONG";
$kalimatEmpat = "pssi";
 
echo punyaHuruf($kalimatPertama, $kalimatKedua);
echo punyaHuruf($kalimatPertama,$kalimatKetiga);
echo punyaHuruf($kalimatPertama,$kalimatEmpat);
 

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