Upgrading to PHP 8.1 killed saving scores online

[SpaceKoala]

Apparently with upgrading PHP 8.1 a lot of the commands in the score saving php script that Jeff wrote have been depreciated (or annoyingly changed from mysql... to mysqli... and some arguments needing to be added to certain commands.)

I do not know anything about php or coding in general but I have been trying to update the script by reading the error log, googling the error and changing the line.

I have fixed most of the errors but now the only errors I get are related to these two array keys not being defined and I have not been able to solve this via google.

[27-Jan-2023 06:41:32 America/Chicago] PHP Warning:  Undefined array key "status" in /home1/(my server name)/public_html/apps/scores/score_script.php on line 78
[27-Jan-2023 06:41:32 America/Chicago] PHP Warning:  Undefined array key "gameid" in /home1/(my server name)/public_html/apps/scores/score_script.php on line 87
[27-Jan-2023 06:41:57 America/Chicago] PHP Warning:  Undefined array key "status" in /home1/(my server name)/public_html/apps/scores/score_script.php on line 78
[27-Jan-2023 06:41:57 America/Chicago] PHP Warning:  Undefined array key "gameid" in /home1/(my server name)/public_html/apps/scores/score_script.php on line 87

I have pasted the code with my fixes below. Does anyone have any knowledge of PHP 8.1 and able to help out?

 
<?  

// header("Access-Control-Allow-Origin: *");

	///////////////////////////////////////////////////////
	// Online Score Script
	// Jeff Vance 
	// Version 1.4
	//////////////////////////////////////////////////////
	
	//////////////////////////////////////////////////////
	// WARNING AND READ THIS!
	// You don't need to edit this file
	// The only file to edit is config.php
	// Don't edit this unless you know what your doing :)
	// This works out of the box -- your error must be in config.php
	/////////////////////////////////////////////////////
	
	// Get Configuation file
	require("config.php");
	
	// Connect to your server
    $db=mysqli_connect($mysql_host,$mysql_user,$mysql_password) or die (mysql_error());
	@mysqli_select_db($db,$mysql_database) or die (mysql_error());


		
	//////////////////////////////////////////////////
	// Check for the existing table if its not found create it
	// This is really just here to make the life of new users of the script eaiser
	// They won't have to go thru the script and create the table
	/////////////////////////////////////////////////

	if(!mysqli_num_rows( mysqli_query($db,"SHOW TABLES LIKE '".$tname."'")))
	{
	$query = "CREATE TABLE `$tname` (`id` int(11) NOT NULL auto_increment,`gameid` varchar(255) NOT NULL,`playername` varchar(255) NOT NULL,`score` int(255) NOT NULL,`scoredate` varchar(255) NOT NULL,`md5` varchar(255) NOT NULL, PRIMARY KEY  (`id`)) ENGINE=MyISAM AUTO_INCREMENT=1 DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;";

	$create_table = mysql_query($query)or die (mysql_error());
	// Preload table with 10 scores
	$date = date('M d Y');
	
	$query = "insert into $tname(gameid,playername,score,scoredate) values ('1','Space Koala','100','$date')";
	$insert_the_data = mysql_query($query)or die(mysql_error());
	
	$query = "insert into $tname(gameid,playername,score,scoredate) values ('1','Space Koala','99','$date')";
	$insert_the_data = mysql_query($query)or die(mysql_error());
	
	$query = "insert into $tname(gameid,playername,score,scoredate) values ('1','Space Koala','98','$date')";
	$insert_the_data = mysql_query($query)or die(mysql_error());
	
	$query = "insert into $tname(gameid,playername,score,scoredate) values ('1','Space Koala','97','$date')";
	$insert_the_data = mysql_query($query)or die(mysql_error());
	
	$query = "insert into $tname(gameid,playername,score,scoredate) values ('1','Space Koala','96','$date')";
	$insert_the_data = mysql_query($query)or die(mysql_error());

        $query = "insert into $tname(gameid,playername,score,scoredate) values ('1','Space Koala','95','$date')";
	$insert_the_data = mysql_query($query)or die(mysql_error());
	
	$query = "insert into $tname(gameid,playername,score,scoredate) values ('1','Space Koala','94','$date')";
	$insert_the_data = mysql_query($query)or die(mysql_error());
		
	$query = "insert into $tname(gameid,playername,score,scoredate) values ('1','Space Koala','93','$date')";
	$insert_the_data = mysql_query($query)or die(mysql_error());
	
	$query = "insert into $tname(gameid,playername,score,scoredate) values ('1','Space Koala','92','$date')";
	$insert_the_data = mysql_query($query)or die(mysql_error());
	
	$query = "insert into $tname(gameid,playername,score,scoredate) values ('1','Space Koala','91','$date')";
	$insert_the_data = mysql_query($query)or die(mysql_error());
	
	
	}
	
	///////////////////////////////////////////////////////
	// Status Checker
	///////////////////////////////////////////////////////
	if ($_GET["status"])
	{
	echo "online";
	exit;
	}
	
	////////////////////////////////////////////////////////
	// Run some checks on our gameid 
	////////////////////////////////////////////////////////
	$gameid_safe = mysqli_real_escape_string($db,$_GET["gameid"]);
	// Check the gameid is numeric
	// If its not numberic lets exit
	if(!is_numeric($gameid_safe))
    {
     exit; 
    }

	///////////////////////////////////////////////////////
	// Upload new score
	///////////////////////////////////////////////////////
	// Test for the variables submitted by the player
	// If they exist upload into the database

	if ($_GET["playername"] && $_GET["gameid"] && $_GET["score"])
	{
	
	// Strip out | marks submitted in the name or score
	$playername_safe = str_replace("|","_",$_GET["playername"]);
	
	//Unsafe name checker
	$unsafe = explode("\n", file_get_contents('banwords.txt'));
	$playername_safe = str_ireplace($unsafe, "",$playername_safe);

	$playername_safe = mysqli_real_escape_string($db,$playername_safe);
	$score_safe = mysql_real_escape_string($_GET["score"]);
	$date = date('M d Y');
		
	// Check the score sent is is numeric
	// If the score is not numberic lets exit
	if(!is_numeric($score_safe))
    {
     exit; 
    }
	
	// this secret key needs to be the same as the secret key in your game.
	$security_md5= md5($_GET["gameid"].$_GET["playername"].$_GET["score"].$secret_key);
	
	// Check for submitted MD5 different then server generated MD5
	if ($security_md5 <>$_GET["code"])
	{
	// Something is wrong -- MD5 security hash is different
	// Could be someone trying to insert bogus score data
	exit;
	}
	// Everything is cool -- Insert the data into the database
	$query = "insert into $tname(gameid,playername,score,scoredate,md5) values ('$gameid_safe','$playername_safe','$score_safe','$date','$security_md5')";
	$insert_the_data = mysqli_query($db,$query)or die(mysql_error());
	}
		
	///////////////////////////////////////////////////////
	// List high score
	///////////////////////////////////////////////////////
	// Return a list of high scores with "|" as the delimiter
	if ($gameid_safe)
	{
    $query = "select * from $tname where gameid='$gameid_safe' order by score desc limit 10";
	$view_data = mysqli_query($db,$query)or die(mysql_error());
	while($row_data = mysqli_fetch_array($view_data))
		{
		print($row_data["playername"]);
		print "|";
		print ($row_data["score"]);
		print ("|");
		print($row_data["scoredate"]);
		print("|");
		}
	
	// We limit the score database to hold the number defined in the config script
	// First check to see how many records we have for this game
  
	$query1 ="select * from $tname where gameid = '$gameid_safe'";
	$countresults = mysqli_query($db,$query1)or die(mysql_error());
	$countofdeletes = mysqli_num_rows($db,$countresults);
	if (mysqli_num_rows($db,$countresults)>$score_number)
		{
		$query2 ="SELECT * FROM $tname WHERE gameid = '$gameid_safe' ORDER BY score DESC Limit $score_number,$countofdeletes";
		$Get_data = mysqli_query($db,$query2)or die (mysql_error());
		while($row_data = mysql_fetch_array($Get_data))
		{
		$id_delete = $row_data["id"];
		$query3 = "Delete from $tname where id = $id_delete";
		$Delete_data = mysqli_query($db,$query3)or die (mysql_error());
		}
		}
	}
		
?>

[Machart_Studios]

I'm working with PHP nearly every day.

It looks like it is not even PHP 7 compatible. All mysql_... should be mysqli_... (with an i) and some need the database connection in the first parameter ($db) but not the ones you added them

Everything should work fine now. Please let me know if not.

<?php

// header("Access-Control-Allow-Origin: *");

///////////////////////////////////////////////////////
// Online Score Script
// Jeff Vance
// Version 1.5
// PHP 7/8 fixes by Sven Bader
//////////////////////////////////////////////////////

//////////////////////////////////////////////////////
// WARNING AND READ THIS!
// You don't need to edit this file
// The only file to edit is config.php
// Don't edit this unless you know what your doing :)
// This works out of the box -- your error must be in config.php
/////////////////////////////////////////////////////

// Get Configuation file
require("config.php");

// Connect to your server


$db = mysqli_connect($mysql_host, $mysql_user, $mysql_password) or die("MySQL Error");
@mysqli_select_db($db, $mysql_database) or die (mysqli_error($db));


//////////////////////////////////////////////////
// Check for the existing table if it's not found create it
// This is really just here to make the life of new users of the script easier
// They won't have to go through the script and create the table
/////////////////////////////////////////////////

if (!mysqli_num_rows(mysqli_query($db, "SHOW TABLES LIKE '" . $tname . "'"))) {
    $query = "CREATE TABLE `$tname` (`id` int(11) NOT NULL auto_increment,`gameid` varchar(255) NOT NULL,`playername` varchar(255) NOT NULL,`score` int(255) NOT NULL,`scoredate` varchar(255) NOT NULL,`md5` varchar(255) NOT NULL, PRIMARY KEY  (`id`)) ENGINE=MyISAM AUTO_INCREMENT=1 DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;";
    $create_table = mysqli_query($db, $query) or die (mysqli_error($db));
    // Preload table with $score_number scores
    $date = date('M d Y');

    for ($i = 1; $i <= $score_number; $i++) {
        $query = "insert into $tname(gameid,playername,score,scoredate) values ('1','Space Koala',101-$i,'$date')";
        $insert_the_data = mysqli_query($db, $query) or die(mysqli_error($db));
    }


}

///////////////////////////////////////////////////////
// Status Checker
///////////////////////////////////////////////////////
if ($_GET["status"]) {
    echo "online";
    exit;
}

////////////////////////////////////////////////////////
// Run some checks on our gameid
////////////////////////////////////////////////////////

$gameid_safe = intval(mysqli_real_escape_string($db, $_GET["gameid"]));


///////////////////////////////////////////////////////
// Upload new score
///////////////////////////////////////////////////////
// Test for the variables submitted by the player
// If they exist upload into the database

if ($_GET["playername"] && $_GET["gameid"] && $_GET["score"]) {

    // Strip out | marks submitted in the name or score
    $playername_safe = mysqli_real_escape_string($db, $_GET["playername"]);
    $playername_safe = str_replace("|", "_", "$playername_safe");

    //Unsafe name checker
    $unsafe = explode("\n", file_get_contents('banwords.txt'));
    $playername_safe = str_ireplace($unsafe, "", $playername_safe);


    $score_safe = mysqli_real_escape_string($db, $_GET["score"]);
    $score_safe = intval($score_safe);

    $date = date('M d Y');

    // this secret key needs to be the same as the secret key in your game.
    $security_md5 = md5($_GET["gameid"] . $_GET["playername"] . $_GET["score"] . $secret_key);

    // Check for submitted MD5 different then server generated MD5
    if ($security_md5 <> $_GET["code"]) {
        // Something is wrong -- MD5 security hash is different
        // Could be someone trying to insert bogus score data
        exit;
    }
    // Everything is cool -- Insert the data into the database
    $query = "insert into $tname(gameid,playername,score,scoredate,md5) values ('$gameid_safe','$playername_safe','$score_safe','$date','$security_md5')";
    $insert_the_data = mysqli_query($db, $query) or die(mysqli_error($db));
}

///////////////////////////////////////////////////////
// List high score
///////////////////////////////////////////////////////
// Return a list of high scores with "|" as the delimiter
if ($gameid_safe) {
    $query = "select * from $tname where gameid='$gameid_safe' order by score desc limit " . $score_number;
    $view_data = mysqli_query($db, $query) or die(mysqli_error($db));
    while ($row_data = mysqli_fetch_array($view_data)) {
        print($row_data["playername"]);
        print "|";
        print ($row_data["score"]);
        print ("|");
        print($row_data["scoredate"]);
        print("|");
    }

    // We limit the score database to hold the number defined in the config script
    // First check to see how many records we have for this game

    $query1 = "select * from $tname where gameid = '$gameid_safe'";
    $countresults = mysqli_query($db, $query1) or die(mysqli_error($db));
    $countofdeletes = mysqli_num_rows($countresults);

    if (mysqli_num_rows($countresults) > $score_number) {
        $query2 = "SELECT * FROM $tname WHERE gameid = '$gameid_safe' ORDER BY score DESC Limit $score_number,$countofdeletes";
        $Get_data = mysqli_query($db, $query2) or die (mysqli_error($db));
        while ($row_data = mysqli_fetch_array($Get_data)) {
            $id_delete = $row_data["id"];
            $query3 = "Delete from $tname where id = $id_delete";
            $Delete_data = mysqli_query($db, $query3) or die (mysqli_error($db));
        }
    }
}

[SpaceKoala]

Brilliant! Thank you!