First php program attempt

doghouse308 · November 5, 2014

I stumbled across this site after being slammed hard elsewhere for being a novice and really not knowing what I am doing. What I have read so far is more encouraging. I just wrote my first program in php and it is not working at all right now. All it keeps doing is opening window after window until I force the browser to close. I am using a Mac running Yosemite and using MAMP. Hopefully that is enough background.

I know this is an introduction area, so I will also post this in another forum in case this is closed for being off topic.

This is a login file to connect to the server:

<?php // login.php
// Get connection information

echo <<<_END
    <form method = "post" action = "login.php">
    <pre>
    <input type = "text" name = "localhost" />host server<br />
    <input type = "text" name = "username" />Username<br />
    <input type = "text" name = "password" /><br />
    <br />
    <input type = "submit" value = "submit" />
    </form>
_END

$db_server = sanitize_string($localhost);
$db_username = sanitize_string($username);
$db_password = sanitize_string($password);

/*
$user = 'root';
$password = 'root';
$db = 'rpsls';
$host = 'localhost';
$port = 3306;

$link = mysql_connect(
"$host:$port",
$user,
$password
);
$db_selected = mysql_select_db(
$db,
$link
);
*/

mysql_connect($db_server, $db_username, $db_password) or die(mysql_error());

// Create rpsls table if it does not exist

$tbl = "rpsls";
$query = "CREATE TABLE rpsls(human VARCHAR(10), computer VARCHAR(10), outcome VARCHAR(5),
    action VARCHAR(15));

INSERT INTO rpsls (human, computer, outcome, action) VALUES ("Rock", "Paper", "Lose", "Covers");
INSERT INTO rpsls (human, computer, outcome, action) VALUES ("Rock", "Scissors", "Win", "Crushes");
INSERT INTO rpsls (human, computer, outcome, action) VALUES ("Rock", "Lizard", "Win", "Crushes");
INSERT INTO rpsls (human, computer, outcome, action) VALUES ("Rock", "Spock", "Lose", "Vaporizes");
INSERT INTO rpsls (human, computer, outcome, action) VALUES ("Paper", "Rock", "Win", "Covers");
INSERT INTO rpsls (human, computer, outcome, action) VALUES ("Paper", "Scissors", "Lose", "Cuts");
INSERT INTO rpsls (human, computer, outcome, action) VALUES ("Paper", "Lizard", "Lose", "Eats");
INSERT INTO rpsls (human, computer, outcome, action) VALUES ("Paper", "Spock", "Win", "Disproves");
INSERT INTO rpsls (human, computer, outcome, action) VALUES ("Scissors", "Lizard", "Win", "Decapitates");
INSERT INTO rpsls (human, computer, outcome, action) VALUES ("Scissors", "Spock", "Lose", "Smashes");
INSERT INTO rpsls (human, computer, outcome, action) VALUES ("Scissors", "Rock", "Lose", "Crushes");
INSERT INTO rpsls (human, computer, outcome, action) VALUES ("Scissors", "Paper", "Win", "Cuts");
INSERT INTO rpsls (human, computer, outcome, action) VALUES ("Lizard", "Spock", "Win", "Poisons");
INSERT INTO rpsls (human, computer, outcome, action) VALUES ("Lizard", "Rock", "Lose", "Crushes");
INSERT INTO rpsls (human, computer, outcome, action) VALUES ("Lizard", "Paper", "Win", "Eats");
INSERT INTO rpsls (human, computer, outcome, action) VALUES ("Lizard", "Scissors", "Lose", "Decapitates");
INSERT INTO rpsls (human, computer, outcome, action) VALUES ("Spock", "Rock", "Win", "Vaporizes");
INSERT INTO rpsls (human, computer, outcome, action) VALUES ("Spock", "Paper", "Lose", "Disproves");
INSERT INTO rpsls (human, computer, outcome, action) VALUES ("Spock", "Scissors", "Win", "Smashes");
INSERT INTO rpsls (human, computer, outcome, action) VALUES ("Spock", "Lizard", "Lose", "Poisons");";

check_table($tbl, $query);

// Create choices table if it does not exist

$tbl = "choices";

$query = "CREATE TABLE choices(id SMALLINT, choice VARCHAR(10));

INSERT INTO choices (id, choice) VALUES (1, "Rock");
INSERT INTO choices (id, choice) VALUES (2, "Paper");
INSERT INTO choices (id, choice) VALUES (3, "Scissors");
INSERT INTO choices (id, choice) VALUES (4, "Lizard");
INSERT INTO choices (id, choice) VALUES (5, "Spock");";

check_table($tbl, $query);

// Sanitize user input

function sanitize_string($var)
{
$var = stripslashes($var);
$var = htmlentities($var);
$var = strip_tags($var);
return $var;
}

function check_table($tbl, $query){

$db = new mysqli(...);
$result = $db->query("SHOW TABLES LIKE "$tbl);
if ($result->num_rows == 0){
    mysql_query($query);
    }
}

?>

and this is the program:

<?php

// log into server and database

require_once 'login.php';
$db_server = mysql_connect($db_hostname, $db_username, $db_password);
if (!$db_server) die("Unable to connect to MySQL: " . mysql_error());
$conn = mysql_connect($db_server, $db_username, $db_password) or die(mysql_error());
$db_database = 'rpsls';
mysql_select_db($db_database) or die("Unable to select database: " . mysql_error());

// Start Game

ready_to_play();


// Rock Paper Scissors Lizard Spock game
function rock_paper_scissors_lizard_spock()
{
$human = human_play();
$computer = computer_play();
game_outcome($human, $computer);
play_again();


// Start Game Function

function ready_to_play(){
echo <<<_END
    <form method = "post" action = "rpsls.php">
    <h2>Ready to play Rock, Paper, Lizard, Spock?</h2>
    <hr>
    <table>
    <tr>
        <td><input type = "radio" name = "ready" value = "Yes" />Yes</td>
        <td><input type = "radio" name = "ready" value = "No" />No</td>
    </tr>
        <tr>
        <td colspan = "2"><input type = "submit" value = "Play!" /></td>
    </tr>
    </table>
    </form>
_END
    
    if ($ready == "Yes"){
        $query = "CREATE TABLE gameResults (
            games SMALLINT NOT NULL,
            win SMALLINT NULL,
            loss SMALLINT NULL,
            draw SMALLINT NULL,
            PRIMARY KEY (games))";
            
        mysql_query($query);    
        
        rock_paper_scissors_lizard_spock();
    }else{
        close_rpsls();
    }
}

// Play Again

// Start Game Function

function play_again()
{
echo <<<_END
    <form method = "post" action = "rpsls.php">
    <h2>Play Again?</h2>
    <hr>
    <table>
    <tr>
        <td><input type = "radio" name = "ready" value = "Yes" />Yes</td>
        <td><input type = "radio" name = "ready" value = "No" />No</td>
    </tr>
        <tr>
        <td colspan = "2"><input type = "submit" value = "Play!" /></td>
    </tr>
    </table>
    </form>
_END
    
    if ($ready == "Yes"){
        rock_paper_scissors_lizard_spock();
    }else{
        close_rpsls();
    }
}

// Human Play Selection

function human_play()
{
echo <<<_END
    <form method = "post" action = "rpsls.php">
    <h2>Let's Play Rock, Paper, Lizard, Spock</h2>
    <hr>
    <table>
    <tr>
        <td><input type = "radio" name = "human" value = "Rock" />Rock</td>
        <td><input type = "radio" name = "human" value = "Paper" />Paper</td>
    </tr>
    <tr>
        <td><input type = "radio" name = "human" value = "Scissors" />Scissors</td>
        <td><input type = "radio" name = "human" value = "Lizard" />Lizard</td>
    </tr>
    <tr>
        <td colspan = "2"><input type = "radio" name = "human" value = "Spock" />Spock</td>
    </tr>
    <tr>
        <td colspan = "2"><hr></td>
    </tr>
    <tr>
        <td colspan = "2"><input type = "submit" value = "Play!" /></td>
    </tr>
    </table>
    </form>
    
_END
    
    return $human;
}

// Computer Play Selection

function computer_play()
{
    $play = rand(1,5);
    $query = "SELECT choice FROM choices WHERE number = $play";
    $computer = mysql_query($query);
    
    return $computer;
}

// Game Outcome Function

function game_outcome($human, $computer)
{
    $win = $loss = $draw = 0
    
    if ($human == $computer){
        echo "Draw<br />";
        echo "We both played ".$human;
        $draw = 1;
    }else{
        $query = "SELECT outcome, action FROM rpsls WHERE human = $human AND computer = $computer";
        $results = mysql_query($query);
        $results2 = mysql_fetch_array($results);
        $outcome = $results2[0];
        $action = $results2[1];
        
        if ($outcome == "Win"{
            echo "You Win!!!<br />"
            echo "Your ".$human. " ".$action." my ".$computer."<br />";
            $win = 1;
        }else{
            echo "You Lose/.<br />
            echo "My ".$computer." ".$action." your ".$human."<br />";
            $loss = 1;
            }
        }
        $query = "INSERT INTO gameResults VALUES".(NULL, '$win', '$loss', '$draw')";
        mysql_query($query);
}

// Game Statistics Function

function game_statistics ()
{
    $query = "SELECT * FROM gameResults";
    $result = mysql_query($query);
    $rows = mysql_num_rows($result);
    $games = $rows;
    $win = $loss = $draw = 0;
    
    for ($index = 0; $index < $rows; ++$index){
        $row = mysql_fetch_row($result);
        $win = $win + $row[1];
        $loss = $loss + $row[2];
        $draw = $draw + $row[3];
    }
    
echo <<<_END
    <table>
    <tr>
        <td>Games</td>
        <td>Win</td>
        <td>Loss</td>
        <td>Draw</td>
    </tr>
    <tr>
        <td>$games</td>
        <td>$win</td>
        <td>$loss</td>
        <td>$draw</td>
    </tr>
    </table>
_END
}

// Print Statistics and close the game

function close_rpsls(){
echo <<<_END
    <form method = "post" action = "rpsls.php">
    <h3>Are you sure you want to quit?</h3>
    <hr>
    <table>
    <tr>
        <td><input type = "radio" name = "ready" value = "Yes" />Yes</td>
        <td><input type = "radio" name = "ready" value = "No" />No</td>
    </tr>
        <tr>
        <td colspan = "2"><input type = "submit" value = "Play!" /></td>
    </tr>
    </table>
    </form>
_END
    
    if ($ready == "No"){
        rock_paper_scissors_lizard_spock();
    }else{
        $query = "DROP TABLE gameResults";
        mysql_query($query);
    }    
}

// close connection
mysql_close($conn);
?>

Please forgive my novice errors and help me figure out what is wrong with this program.

Thank you.

Here is the contents of the error log:

141104 18:36:26 mysqld_safe Starting mysqld daemon with databases from /Applications/MAMP/db/mysql
141104 18:36:28 [Warning] Setting lower_case_table_names=2 because file system for /Applications/MAMP/db/mysql/ is case insensitive
141104 18:36:28 [Note] Plugin 'FEDERATED' is disabled.
141104 18:36:28 InnoDB: The InnoDB memory heap is disabled
141104 18:36:28 InnoDB: Mutexes and rw_locks use GCC atomic builtins
141104 18:36:28 InnoDB: Compressed tables use zlib 1.2.3
141104 18:36:28 InnoDB: Initializing buffer pool, size = 128.0M
141104 18:36:28 InnoDB: Completed initialization of buffer pool
141104 18:36:28 InnoDB: highest supported file format is Barracuda.
141104 18:36:32 InnoDB: Waiting for the background threads to start
141104 18:36:33 InnoDB: 5.5.38 started; log sequence number 1711074
141104 18:36:33 [Note] Server hostname (bind-address): '0.0.0.0'; port: 8889
141104 18:36:33 [Note] - '0.0.0.0' resolves to '0.0.0.0';
141104 18:36:33 [Note] Server socket created on IP: '0.0.0.0'.
141104 18:36:35 [Note] Event Scheduler: Loaded 0 events
141104 18:36:35 [Note] /Applications/MAMP/Library/bin/mysqld: ready for connections.
Version: '5.5.38' socket: '/Applications/MAMP/tmp/mysql/mysql.sock' port: 8889 Source distribution

ginerjm · November 5, 2014

This is your FIRST script? Kinda complex isn't it? And you wrote it?

Can you assemble these pieces of code in the correct order and look at them with a questioning eye? If what you have posted runs in the order it shows here then you db connect will never connect. Just look at it and read it out loud to yourself and you'll begin to see the logical errors. For ex.

you begin by outputting a form and then you make 3 function calls using vars that have not been defined and assign the returned values to 3 other vars that will of course also be undefined. Then you attempt to make a connection with undefined values. That is what I mean. You need to look at the flow of your code and put things in order.

PS - it is not a good idea to be mixing presentation (html stuff) in with the logic stuff (php). Do the php stuff first to prepare your eventual output and THEN do the outputting of your html and the dynamic data that your php has gathered for you.

Ch0cu3r · November 5, 2014

There are quite a few issues with your code. You are using out dated coding techniques as your code relies on a setting called register_globals to be enabled in order for it to function. This setting has since been disabled ~10 years ago and most recently been removed completely.

You should be using superglobal variables for receiving user input in your script.

This is a login file to connect to the server:

The only code that should be in there is your database credentials and the necessary code to connect to mysql. There should not be code in there for setting up your tables as this will happen each times the page is loaded.

Also why are using mysql and and mysqli within the check_tables function? You have already connected to mysql yet your create a new connection using mysqli to perform a SHOW TABLES LIKE query. This is not needed just use a CREATE TABLE IF NOT EXISTS query to create your tables.

Also you should stick to executing each query separately and not run multiple queries at once. If your are going to be inserting multiple values into the same table then wrap each set of values in parenthesizes and separate them with a comma. EG

INSERT INTO table_name (... SET OF VALUES 1 ...),
                       (... SET OF VALUES 2 ...),
                       ... etc

and this is the program:

Why are connecting to mysql for the second and third time (lines 6 and ? You have already included login.php which has already connected to mysql!

After this there are quite a few syntax errors.

There is no closing curly brace for the rock_paper_scissors_lizard_spock function.

On line 119 you have left off the semi-colon.

On line 157 you have an incomplete echo statement, you start a string but dont finish it.

On line 162 is a nother malformed echo statement this because you have ". in the middle of the string.

That about the main issues with the script. There are still many more issues with the code. IMHO it is a complete over kill to use a database to for this simple game. Using sessions or cookies will be more suitable.

Here is the contents of the error log:

Not sure why that is needed?

All it keeps doing is opening window after window until I force the browser to close.

PHP cannot do that.

doghouse308 · November 5, 2014

ginerjm:

Yes, this is the first script I wrote in php. And yes, it is my work written using what I learned in an appearantly outdated book. I appreciate your feedback and will work on the issues.

Ch0cu3r:

As mentioned above, this was written using information from the book selected for a class I am taking. I did not realize that the information was so far out of date.

why are using mysql and and mysqli within the check_tables function? You have already connected to mysql yet your create a new connection using mysqli to perform a SHOW TABLES LIKE query. This is not needed just use a CREATE TABLE IF NOT EXISTS query to create your tables.

That was a suggestion from a co-worker, who learned php on his own.

I found several of the syntax errors after downloading an editor that works with php. Thank you for the assistance.

The overkill as you that you justifiably note is due to the way the program was requested.

I don't wish to appear insolent, but what I described is what happens when trying to run this program. I have encountered the same issue using Safari and Firefox.

ginerjm · November 5, 2014

Sorry - but your log entries don't tell me anything. Do you mind telling us what is wrong? Of course I still don't see how this script could ever run but you could tell us what it does do for you

doghouse308 · November 5, 2014

If I try to run this from MAMP, nothing happens. If I try to run it from an IDE (netbeans) it opens window after window after window until I force the browser to close.

This is supposed to be a variant of the game rock, paper, scissors - rock, paper, scissors, lizars, spock

After reading the responses, I believe the login script will be included in the program for simplicity. This will never be used on a remote server and I don't see the need for the additional complexity.

The existing login file is supposed to generate a form to collect the server, username and password information and establish the connection. If the rpsls and choices table are not present, they will be created (a better method of accomplishing this was presented in a previous response and will be incorporated shortly). The last function in the login file is intended to prevent unintended and potentionally damaging information to be sent using the form. After further reflection, I may simply eliminate that too and simply use the information needed to establish the connection with the database in plain english.

Going in order through the rest of the script:

The game begins with a call to the ready_to_play function that creates a form with radio buttons to begin the game. If 'Yes' is checked the gameResults table is createed and the game begins by calling the rock_paper_scissors_lizard_spock function once the user clicks on the button. If 'No' is selected the close_rpsls function is called, closing the connection and ending the game.

The rock_paper_scissors_lizard_spock function calls the human_play function that creates a table for the human play and returns the value to the rock_paper_scissors_lizard_spock function. Next the computer_play function is called and the value returned to the rock_paper_scissors_lizard_spock function. The computer and human values are passed to the game outcome function that queries the rpsls table for the outcome and action that match the human and computer plays and the results of the game are send to the gameResults table.

After each play the user is asked if they want to play again using the play_again function that is very similar to the ready_to_play function. If the user selects 'Yes' the rock_paper_scissors_lizard_spock function is called. If 'No' the close_rpsls function is called The user is asked if they really want to quit. If 'No' the rock_paper_scissors_lizard_spock function is called. If 'Yes' the game_statistic function is called (not currently in the included code. It looks like I forgot that function call). The game_statistics function creates a table to display the number of games, wins, losses and draws, DROPS the gameResults table and closes the connection. I think I also need something there to exit the game.

I hope that helps.

Edited November 5, 2014 by doghouse308

ginerjm · November 6, 2014

What I asked you to do was to go thru your code yourself and narrate what you had programmed it to do so that YOU could see what a mish-mosh of stuff you were doing in incorrect sequence. That way you could correct the flow so that it made sense and might even work.

As for what is wrong - the only thing you have clearly stated is that it 'opens window after window'. You have already been told that PHP Can't Do That. Obviously you must have either:

a) if this action happens repeatedly without your intereaction then you have some JS code running away. Remove it/Comment it out.

or

b) if this happens every time you hit a submit button then your form is targeted for a new window (not recommended) and that is why you are getting multiple windows.

OR is there something else wrong?

doghouse308 · November 7, 2014

Thank you for your help. I have re-thought this and made significant revisions. The program now runs (mostly) but there are still problems. At the moment there are two sections commented out. The first section is intended to display the results of the hand and the second is to track the game stats. With those sections commented out the program will run but displays nothing in the browser when they are included. One other issue I need to resolve is making the for values required. It will not be good if the user can click submit(play) without selecting anything. I found something at w3 schools site, but was not able to make it work.

Please share your comments on this. There is still some house keeping and some finishing touches. But I would like to resolve the issues above before starting to wrap things up.

Thanks in advance!

<!DOCTYPE html>
<!--
To change this license header, choose License Headers in Project Properties.
To change this template file, choose Tools | Templates
and open the template in the editor.
-->
<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
    </head>
    <body>
        <?php
$human = human_play();
$computer = computer_play();
echo $human."<br />".$computer;   
$win = $lose = $draw = 0;

if ($human == $computer){
	$draw = 1;
	echo "Draw! <br /> We both played ".$human;
	}else{
	  switch($human){
			case 'Rock':
				switch ($computer){
					case 'Paper': $outcome = "Lose";$action = "Covers";break;
					case 'Scissors': $outcome = "Win";$action = "Crushes";break;
					case 'Lizard': $outcome = "Win";$action = "Crushes";break;
					case 'Spock': $outcome = "Lose";$action = "Vaporizes";break;
				}
                break;
            case 'Paper':
				switch ($computer){
					case 'Rock': $outcome = "Win";$action = "Covers";break;
					case 'Lizard': $outcome = "Lose";$action = "Eats";break;
					case 'Scissors': $outcome = "Lose";$action = "Cuts";break;
					case 'Spock': $outcome = "Win";$action = "Disproves";break;
				}
                break;
			case 'Scissors':
				switch ($computer){
					case 'Rock': $outcome = "Lose";$action = "Crushes";break;
					case 'Paper': $outcome = "Win";$action = "Cuts";break;
					case 'Lizard': $outcome = "Win";$action = "Decapitates";break;
					case 'Spock': $outcome = "Lose";$action = "Smashes";break;
				}
                break;
			case 'Lizard':
				switch ($computer){
					case 'Rock': $outcome = "Lose";$action = "Crushes";break;
					case 'Paper': $outcome = "Win";$action = "Eats";break;
					case 'Scissors': $outcome = "Lose";$action = "Decapitates";break;
					case 'Spock': $outcome = "Win";$action = "Poisons";break;
				}
                break;
            case 'Spock':
				switch ($computer){
					case 'Rock': $outcome = "Win";$action = "Vaporizes";break;
					case 'Paper': $outcome = "Lose";$action = "Disproves";break;
					case 'Scissors': $outcome = "Win";$action = "Smashes";break;
					case 'Lizard': $outcome = "Lose";$action = "Poisons";break;
				}
                break;

			}    
		}
echo "<br />Outcome: ".$outcome." Action:  ".$action."<br />";
/*  commented out  - contains trouble
if ($outcome === 'Win'){
	$win = 1;
	echo "<br />You ".$outcome."!!<br />Your ".$human." ".$action." my ".$computer". <br />";
	}else{
	$lose = 1;
	echo "<br />You ".$outcome."!!<br />My ".$computer." ".$action." your ".$human". <br />";
	}
*/
if ($outcome =='Win'){
	$win = 1;
	}elseif ($outcome =='Lose'){
	$lose = 1;
	}else{
	$draw = 1;
	};
	
echo $win." ".$lose." ".$draw;
//game_statistics($win, $lose, $draw);

function human_play(){
echo <<<_END
<form method = "post" action = "temp.php">
<h2>Let's Play Rock, Paper, Lizard, Spock</h2>
<hr>
<table>
<tr>
    <td><input type = "radio" name = "human" value = "Rock" />Rock</td>
    <td><input type = "radio" name = "human" value = "Paper" />Paper</td>
</tr>
<tr>
    <td><input type = "radio" name = "human" value = "Scissors" />Scissors</td>
    <td><input type = "radio" name = "human" value = "Lizard" />Lizard</td>
</tr>
<tr>
    <td colspan = "2"><input type = "radio" name = "human" value = "Spock" />Spock</td>
</tr>
<tr>
    <td colspan = "2"><hr></td>
</tr>
<tr>
    <td colspan = "2"><input type = "submit" value = "Play!" /></td>
</tr>
</table>
</form>	
_END;
 	
$human = $_POST['human'];
return $human;
}
function computer_play(){
    $play = rand(1,5);
    switch ($play) {
    case 1:
        $computer = "Rock";
        return $computer;
    case 2:
        $computer = "Paper";
        return $computer;
    case 3:
        $computer = "Scissors";
        return $computer;
    case 4:
        $computer = "Lizard";
        return $computer;
    case 5:
        $computer = "Spock";
        return $computer;
    }
}
/*
function game_statistics($win, $lose, $draw){
	static $games = $won = $loss = $ddraw = 0
	
	$won = $won + $win;
	$loss = $loss +  $lose;
	$ddraw = $ddraw + $draw;
	echo $won." ".$loss." ".$ddraw;
	}
*/
		?>
    </body>
</html>

hansford · November 7, 2014

If you actually wrote this code - how did you get so far with so many errors. You just wrote the whole thing without testing as you went along?

That makes for a debugging nightmare. You need to bit by bit test as you code. So, you already wrote it, so all you need to do now is break it down into testable chunks. When all of the chunks give you the output you want - put it back together. use echo, var_dump, print_r so you can see what is going on.

doghouse308 · November 7, 2014

I wrote the code in pieces and tested as I went along, the parts that are commented out are the problem. When I added those sections (one at a time) is when this stopped working. That is how I know the problem is there.

doghouse308 · November 8, 2014

Thank you for your input and suggestions. There is still some cosmetic work, but the program is now functional. I would like your feedback. I know there are probably better ways to accomplish what I was doing with this program. I have only been working with PHP for about three weeks.

Also, since I was using an outdated book, would someone please suggest a good book to learn PHP?

<!DOCTYPE html>
<!--
Paul Peterson
Rock paper Scissors Lizard Spock
Survey of Perl Python and PHP
Fall 2014
--><?php
//initialize stats array
$stats = array();
$stats['Win'] = 0;
$stats['Lose'] = 0;
$stats['Draw'] = 0;
$stats['games'] = 0;

if(isset($_POST['stats']))
{
    if(isset($_POST['stats']['Win'])) $stats['Win'] = $_POST['stats']['Win'];
    if(isset($_POST['stats']['Lose'])) $stats['Lose'] = $_POST['stats']['Lose'];
    if(isset($_POST['stats']['Draw'])) $stats['Draw'] = $_POST['stats']['Draw'];
    if(isset($_POST['stats']['games'])) $stats['games'] = $_POST['stats']['games'];
}
?>
<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
    </head>
    <body>

 <?php
// if human has a value get computer play, compare results and echo results
if(isset($_POST['human'])){
    $human = $_POST['human'];
    $computer = computer_play();
  
    $win = $lose = $draw = 0;
    if(isset($_POST['human'])){
        if ($human == $computer){
            $draw = 1;
            $outcome = 'Draw';
            
            }else{
              switch($human){
                    case 'Rock':
                        switch ($computer){
                            case 'Paper': $outcome = "Lose";$action = "Covers";break;
                            case 'Scissors': $outcome = "Win";$action = "Crushes";break;
                            case 'Lizard': $outcome = "Win";$action = "Crushes";break;
                            case 'Spock': $outcome = "Lose";$action = "Vaporizes";break;
                        }
                        break;
                    case 'Paper':
                        switch ($computer){
                            case 'Rock': $outcome = "Win";$action = "Covers";break;
                            case 'Lizard': $outcome = "Lose";$action = "Eats";break;
                            case 'Scissors': $outcome = "Lose";$action = "Cuts";break;
                            case 'Spock': $outcome = "Win";$action = "Disproves";break;
                        }
                        break;
                    case 'Scissors':
                        switch ($computer){
                            case 'Rock': $outcome = "Lose";$action = "Crushes";break;
                            case 'Paper': $outcome = "Win";$action = "Cuts";break;
                            case 'Lizard': $outcome = "Win";$action = "Decapitates";break;
                            case 'Spock': $outcome = "Lose";$action = "Smashes";break;
                        }
                        break;
                    case 'Lizard':
                        switch ($computer){
                            case 'Rock': $outcome = "Lose";$action = "Crushes";break;
                            case 'Paper': $outcome = "Win";$action = "Eats";break;
                            case 'Scissors': $outcome = "Lose";$action = "Decapitates";break;
                            case 'Spock': $outcome = "Win";$action = "Poisons";break;
                        }
                        break;
                    case 'Spock':
                        switch ($computer){
                            case 'Rock': $outcome = "Win";$action = "Vaporizes";break;
                            case 'Paper': $outcome = "Lose";$action = "Disproves";break;
                            case 'Scissors': $outcome = "Win";$action = "Smashes";break;
                            case 'Lizard': $outcome = "Lose";$action = "Poisons";break;
                        }
                        break;

                    }

                }            
        }
	// if there is an outcome, display results
        if(isset($outcome)  ){
            if ($outcome =='Win'){
                echo "<br />You ".$outcome."!!<br />Your ".$human." ".$action." my ".$computer." <br />";
            }elseif ($outcome =='Lose'){
                echo "<br />You ".$outcome."!!<br />My ".$computer." ".$action." your ".$human." <br />";
            }elseif ($outcome =='Draw'){
                echo "Draw! <br /> We both played ".$human."<br />";
            }
            };
 // update stats           
    $stats = game_statistics($outcome, $stats);
} else {echo "Please pick something"; }

?>

        <form method = "post" action = "rpsls_paul.php">
<?php
    foreach($stats as $key => $val)
    {
        echo '<input type = "hidden" name = "stats['.$key.']" value = "'.$val.'" />';
    }
?>

    <h2>Let's Play Rock, Paper, Lizard, Spock</h2>
    <hr>
    <table>
    <tr>
        <td><input type = "radio" name = "human" value = "Rock" />Rock</td>
        <td><input type = "radio" name = "human" value = "Paper" />Paper</td>


    </tr>
    <tr>
        <td><input type = "radio" name = "human" value = "Scissors" />Scissors</td>
        <td><input type = "radio" name = "human" value = "Lizard" />Lizard</td>
    </tr>
    <tr>
        <td colspan = "2"><input type = "radio" name = "human" value = "Spock" />Spock</td>
    </tr>
    <tr>
        <td colspan = "2"><hr></td>
    </tr>
    <tr>
        <td colspan = "2"><input type = "submit" value = "Play!" /></td>
    </tr>
    </table>
    </form>  
       
<?php
// generate computer play and return results
function computer_play(){
    $play = rand(1,5);
    switch ($play) {
    case 1:
        $computer = "Rock";
        return $computer;
    case 2:
        $computer = "Paper";
        return $computer;
    case 3:
        $computer = "Scissors";
        return $computer;
    case 4:
        $computer = "Lizard";
        return $computer;
    case 5:
        $computer = "Spock";
        return $computer;
    }
}
// update stats array
function game_statistics($outcome, $stats ){

    $stats['games']++;
    $stats[$outcome]++;
    echo "Games:  ".$stats['games'];
    echo "  Win:  ".$stats['Win'];
    echo "  Loss:  ".$stats['Lose'];
    echo "  Draw:  ".$stats['Draw'];
    return $stats;
  }

     ?>
    </body>
</html>

Barand · November 8, 2014

you could save a lot of coding by using arrays. This is just the traditional "scissors,paper,stone" version but you can extend the arrays to include your lizard and spock(???)

<?php
session_start();

if (!isset($_SESSION['results'])) {
    $_SESSION['results'] = array(
                            'Win'  => 0,
                            'Draw' => 0,
                            'Lose' => 0
                            );    
}

$choices = array (1 => 'rock', 'paper', 'scissors');

$outcomes = array (
        'rock' => array (
                        'rock' => array ('Draw', ''),
                        'paper' => array('Lose', 'covered by'),
                        'scissors' => array('Win', 'blunts')
                        ),
        'paper' => array (
                        'rock' => array ('Win', 'covers'),
                        'paper' => array('Draw', ''),
                        'scissors' => array('Lose', 'cut by')
                        ),
        'scissors' => array (
                        'rock' => array ('Lose', 'blunted by'),
                        'paper' => array('Win', 'cuts'),
                        'scissors' => array('Draw', '')
                        )
        );
        
if (isset($_GET['human'])) {
    $human = $choices[$_GET['human']];
    $computer = $choices[rand(1,3)];
    $outcome = $outcomes[$human][$computer];
    $_SESSION['results'][$outcome[0]]++;
}
?>
<html>
<head>
<title>Scis-Pap-Brick</title>
<style type='text/css'>
table {
    /*border-collapse: collapse;*/
    width: 400px
}
th {
    background-color: #369;
    color: white;
}
td {
    text-align: center;
    width: 33%
}
</style>
</head>
<body>
<?php if (isset($_GET['human'])) { ?>
    <table border='0' cellspacing='1'>
        <tr>
            <th>You</th>
            <td> </td>
            <th>Computer</th>
        </tr>
        <tr>
            <td><?=$human?></td>
            <td><?=$outcome[1]?></td>
            <td><?=$computer?></td>
        </tr>
        <tr>
            <td colspan='3'> </td>
        </tr>
        <tr>
            <td colspan='3'><?="This time you {$outcome[0]}"?></td>
        </tr>
        <tr>
                <?php
                    foreach($_SESSION['results'] as $c=>$r) echo "<th>$c</th>";
                ?>
        </tr>
        <tr>
                <?php
                    foreach($_SESSION['results'] as $r) echo "<td>$r</td>";
                ?>
        </tr>
    </table>
<?php } ?>
<h3>Choose</h3>
<form>
<table border='0' cellspacing='1'>
    <tr>
        <?php
        foreach($choices as $k=>$c) echo "<th>$c</th>";
        ?>
    </tr>
    <tr>  
        <?php
        foreach($choices as $k=>$c) echo "<td><input type='radio' name='human' value='$k'></td>";
        ?>
    </tr>
    <tr>
        <td colspan='3'><br><input type='submit' name='tbnSub' value='Play'></td>
    </tr>
</table>
</form>  
</body>
</html>

Edited November 8, 2014 by Barand

doghouse308 · November 8, 2014

Thank you for your suggestion!

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First php program attempt

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