decipherThis.php

<?php

decipherThis('72olle 103doo 100ya'); // 'Hello good day'
echo "<br />";
decipherThis('82yade 115te 103o'); // 'Ready set go'
echo "<br />";
decipherThis('a'); // 'a'
echo "<br />";
decipherThis('115da'); // 'sad'
echo "<br />";
decipherThis('78o'); // 'no'

 function decipherThis($str){

 $decrypted = '';
 $ob = '';
 
 if (strlen($str) == 1)
 {
	 $decrypted = $str;
	 echo $decrypted;
	 return $decrypted;
 } 
 
 $words = explode(" ", $str); // create array of words separated by space
 $a = count($words);
 
 for ($i=0; $i<$a; $i++)
 {
	 ob_start();
	 $words[$i];
	 $new_str = $words[$i]; 
	 $digits_words = preg_split('/(?<=[0-9])(?=[a-z]+)/i',$new_str);
	
	 $decrypt_ascii = $digits_words[0];
	 $new_letter = chr($decrypt_ascii);
	 //echo $new_letter;
	 $decrypt_word = $digits_words[1];
	 if ($digits_words[1] == null)
	 {
		 echo "<br />null<br />";
		 $decrypt_word = $digit_words[0];
	 }
	 
	 $two_letters = $words[$i];
	 $cnt_letters = strlen($two_letters);

	if ($cnt_letters == 2) 
	{
		$new_word = $digits_words[1];
	} 
	 
		 $sln = strlen ($decrypt_word);
		 $first = $decrypt_word[0];
		 $last= $decrypt_word[$sln-1];
		 $decrypt_word[0] = $last;
		 $decrypt_word[$sln-1] = $first;
		 $new_word = $decrypt_word;

	 if ($i < $a-1)
	 {
		 $new_word = $decrypt_word . " ";
	 }
	 $output = $new_letter . $new_word;
	 
	 echo $output;
	 $ob .= ob_get_contents();
	 
	 ob_end_clean(); 
 }
ob_start();
print_r($ob);
$decrypted = ob_get_clean();

echo $decrypted;
return $decrypted;
}
?>