ascii-dev/hangman.php

## hangman.php
<?php
session_start();
/**
 * This is the hangman game class
 */
class Hangman
{
  $words = 'words.txt';
  function fetchWordArray($wordFile)
    {
        $file = fopen($wordFile,'r');
           if ($file)
        {
            $random_line = null;
            $line = null;
            $count = 0;
            while (($line = fgets($file)) !== false)
            {
                $count++;
                if(rand() % $count == 0)
                {
                      $random_line = trim($line);
                }
        }
        if (!feof($file))
        {
            fclose($file);
            return null;
        }else
        {
            fclose($file);
        }
    }
        $answer = str_split($random_line);
        return $answer;
    }

    function hideCharacters($answer)
    {
        $noOfHiddenChars = floor((sizeof($answer)/2) + 1);
        $count = 0;
        $hidden = $answer;
        while ($count < $noOfHiddenChars )
        {
            $rand_element = rand(0,sizeof($answer)-2);
            if( $hidden[$rand_element] != '_' )
            {
                $hidden = str_replace($hidden[$rand_element],'_',$hidden,$replace_count);
                $count = $count + $replace_count;
            }
        }
        return $hidden;
    }

    function checkAndReplace($userInput, $hidden, $answer)
    {
        $i = 0;
        $wrongGuess = true;
        while($i < count($answer))
        {
            if ($answer[$i] == $userInput)
            {
                $hidden[$i] = $userInput;
                $wrongGuess = false;
            }
            $i = $i + 1;
        }
        if (!$wrongGuess) $_SESSION['attempts'] = $_SESSION['attempts'] - 1;
        return $hidden;
    }

    function checkGameOver($MAX_ATTEMPTS,$userAttempts, $answer, $hidden)
    {
        if ($userAttempts >= $MAX_ATTEMPTS)
            {
                echo "Game Over. The correct word was ";
                foreach ($answer as $letter) echo $letter;
                echo '<br><form action = "" method = "post"><input type = "submit" name' +
                  ' = "newWord" value = "Try another Word"/></form><br>';
                die();
            }
            if ($hidden == $answer)
            {
                echo "Game Over. The correct word is indeed ";
                foreach ($answer as $letter) echo $letter;
                echo '<br><form action = "" method = "post"><input ' +
                  'type = "submit" name = "newWord" value = "Try another Word"/></form><br>';
                die();
            }
    }
}
?>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Switch's Hangman</title>
</head>
<body>
<?php
    if (isset($_POST['newWord'])) unset($_SESSION['answer']);
    if (!isset($_SESSION['answer']))
    {

        $_SESSION['attempts'] = 0;
        $solution = fetchWordArray($words);
        $attempts = len($solution) + 1;
        $_SESSION['answer'] = $solution;
        $_SESSION['hidden'] = hideCharacters($solution);
        echo 'Attempts remaining: '.($attempts - $_SESSION['attempts']).'<br>';
    }else
    {
        if (isset ($_POST['userInput']))
        {
            $userInput = $_POST['userInput'];
            $_SESSION['hidden'] = checkAndReplace(strtolower($userInput), $_SESSION['hidden'], $_SESSION['answer']);
            checkGameOver($MAX_ATTEMPTS,$_SESSION['attempts'], $_SESSION['answer'],$_SESSION['hidden']);
        }
        $_SESSION['attempts'] = $_SESSION['attempts'] + 1;
        echo 'Attempts remaining: '.($MAX_ATTEMPTS - $_SESSION['attempts'])."<br>";
    }
    $hidden = $_SESSION['hidden'];
    foreach ($hidden as $char) echo $char."  ";
?>
<script type="application/javascript">
    function validateInput()
    {
    var x=document.forms["inputForm"]["userInput"].value;
    if (x=="" || x==" ")
      {
          alert("Please enter a character.");
          return false;
      }
    if (!isNaN(x))
    {
        alert("Please enter a character.");
        return false;
    }
}
</script>
<form name = "inputForm" action = "" method = "post">
Your Guess: <input name = "userInput" type = "text" size="1" maxlength="1"  />
<input type = "submit"  value = "Check" onclick="return validateInput()"/>
<input type = "submit" name = "newWord" value = "Try another Word"/>
</form>
</body>
	<?php
	session_start();
	/**
	* This is the hangman game class
	*/
	class Hangman
	{
	$words = 'words.txt';
	function fetchWordArray($wordFile)
	{
	$file = fopen($wordFile,'r');
	if ($file)
	{
	$random_line = null;
	$line = null;
	$count = 0;
	while (($line = fgets($file)) !== false)
	{
	$count++;
	if(rand() % $count == 0)
	{
	$random_line = trim($line);
	}
	}
	if (!feof($file))
	{
	fclose($file);
	return null;
	}else
	{
	fclose($file);
	}
	}
	$answer = str_split($random_line);
	return $answer;
	}

	function hideCharacters($answer)
	{
	$noOfHiddenChars = floor((sizeof($answer)/2) + 1);
	$count = 0;
	$hidden = $answer;
	while ($count < $noOfHiddenChars )
	{
	$rand_element = rand(0,sizeof($answer)-2);
	if( $hidden[$rand_element] != '_' )
	{
	$hidden = str_replace($hidden[$rand_element],'_',$hidden,$replace_count);
	$count = $count + $replace_count;
	}
	}
	return $hidden;
	}

	function checkAndReplace($userInput, $hidden, $answer)
	{
	$i = 0;
	$wrongGuess = true;
	while($i < count($answer))
	{
	if ($answer[$i] == $userInput)
	{
	$hidden[$i] = $userInput;
	$wrongGuess = false;
	}
	$i = $i + 1;
	}
	if (!$wrongGuess) $_SESSION['attempts'] = $_SESSION['attempts'] - 1;
	return $hidden;
	}

	function checkGameOver($MAX_ATTEMPTS,$userAttempts, $answer, $hidden)
	{
	if ($userAttempts >= $MAX_ATTEMPTS)
	{
	echo "Game Over. The correct word was ";
	foreach ($answer as $letter) echo $letter;
	echo '<br><form action = "" method = "post"><input type = "submit" name' +
	' = "newWord" value = "Try another Word"/></form><br>';
	die();
	}
	if ($hidden == $answer)
	{
	echo "Game Over. The correct word is indeed ";
	foreach ($answer as $letter) echo $letter;
	echo '<br><form action = "" method = "post"><input ' +
	'type = "submit" name = "newWord" value = "Try another Word"/></form><br>';
	die();
	}
	}
	}
	?>
	<!DOCTYPE html>
	<html>
	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	<title>Switch's Hangman</title>
	</head>
	<body>
	<?php
	if (isset($_POST['newWord'])) unset($_SESSION['answer']);
	if (!isset($_SESSION['answer']))
	{

	$_SESSION['attempts'] = 0;
	$solution = fetchWordArray($words);
	$attempts = len($solution) + 1;
	$_SESSION['answer'] = $solution;
	$_SESSION['hidden'] = hideCharacters($solution);
	echo 'Attempts remaining: '.($attempts - $_SESSION['attempts']).'<br>';
	}else
	{
	if (isset ($_POST['userInput']))
	{
	$userInput = $_POST['userInput'];
	$_SESSION['hidden'] = checkAndReplace(strtolower($userInput), $_SESSION['hidden'], $_SESSION['answer']);
	checkGameOver($MAX_ATTEMPTS,$_SESSION['attempts'], $_SESSION['answer'],$_SESSION['hidden']);
	}
	$_SESSION['attempts'] = $_SESSION['attempts'] + 1;
	echo 'Attempts remaining: '.($MAX_ATTEMPTS - $_SESSION['attempts'])."<br>";
	}
	$hidden = $_SESSION['hidden'];
	foreach ($hidden as $char) echo $char." ";
	?>
	<script type="application/javascript">
	function validateInput()
	{
	var x=document.forms["inputForm"]["userInput"].value;
	if (x=="" \|\| x==" ")
	{
	alert("Please enter a character.");
	return false;
	}
	if (!isNaN(x))
	{
	alert("Please enter a character.");
	return false;
	}
	}
	</script>
	<form name = "inputForm" action = "" method = "post">
	Your Guess: <input name = "userInput" type = "text" size="1" maxlength="1" />
	<input type = "submit" value = "Check" onclick="return validateInput()"/>
	<input type = "submit" name = "newWord" value = "Try another Word"/>
	</form>
	</body>