Hi, I am a student learning PHP and I am totally stuck. I know this
should be simple but I cannot seem to get it to work, it is supposed to
be a simple word guess game. Guess the letters and they should fill in
as you get them correct. Sort of like hangman but without the images and
it only needs to be one word. I need the unguessed letters to stored in
a hidden field. Here is what I have so far. Any help or input would be
appreciated.

















<?php








$word = "Harry Potter";





if ($guessLength < strlen($word)){





$message = "Guess Again";


$match = false;


$guess = $_POST['guess'] [0];


$position = array();


$display = array();





while (count($display) < strlen($word)){


$display[] = '_';


}





if (in_array(strtolower($guess), $alreadyGuessed)){


$message = "You already guessed'".$guess."'!";


$isGuessed = true;


}





if (!$isGuessed && $guess != null){





$alreadyGuessed[] = strtolower($guess);





for ($h=0; $h < strlen($word); $h++) {


if (strcasecmp(substr($word, $h, 1), $guess) ==0){


$match=true;


$position[] = $h;


}


}





if ($match == true){


foreach ($position as $k => $position){


if(strcmp($display[$position], '_') ==0){


$display[$position] = $guess;


$guessLength++;


if ($guessLength == strlen($word)){


$message = "You are Correct!";


}


}


}


}


}}}}





$_SESSION['word'] = $word;


$_SESSION['display'] = $display;


$_SESSION['guessLength'] = $guessLength;


$_SESSION['alreadyGuessed'] = $alreadyGuessed;





foreach ($display as $l => $letter){


echo $letter.'_';


}





echo '.$message.';





if ($_POST['restart'] === "Restart"){


session_destroy();


}





?>

I think you need to modify all of your codes. It's a mess. The thing is simple but you are making it hard
OK fallow what i say...
Use: str_split("$word");   - This will split each letter of the words into arrays
now after tha,t split each letter of the word into arrays and make one to one letter comparisons. It is better to check if a letter exist in a word with a built in function: substr_count($word,$letterEntered); if it exists and the position matches: return value=true; else false and,
to store the letter that have been entered previously, it is better to use cookies instead of Sessions.
To check whether the letter had been entered before, it is easy to call cookie and then check the values stored in it.