<?php

$bacon=array('a'=>'AAAAA', 'b'=>'AAAAB', 'c'=>'AAABA', 'd'=>'AAABB', 'e'=>'AABAA', 'f'=>'AABAB');
$word="the jOs to kIll fAr";

$word=str_replace(" ","",$word);
$word=wordwrap($word,5," ",true);

$word.=" B";

$word=preg_replace("![A-Z]!", "B", $word); 
$word=preg_replace("![a-z]!", "A", $word);

$word1=explode(" ",$word);
$bacon=array_flip($bacon);

$baconWord="";
for($i=0; $i<count($word1); $i++)  {
    $baconWord.=$bacon[$word1[$i]];
}

echo $baconWord;
// your code goes here