Creating your own Leaderboard / Highscores Easy and Free (PHP & MySQL) [UPDATED 2020]

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The following files have been attached to this tutorial:

.zip
.capx

highscore-example.capx

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Tools

Highscores in Construct 2

We have our PHPs ready. Now you only need to call these PHPs to read/write scores from your Construct 2 game!

Open your game and do the following steps:

1. Right Click and "Insert new object". Select Web -> AJAX

2. Open the highscore_example.capx to help you

3. You need a "Score" variable

4. You need a "DOMAIN_SCORES" constant. Write here your free domain! Where your phps are uploaded. Example: "http://duquekarlgames.000webhostapp.com/"

Reading Scores

To read scores from your server database, take a look to the example .capx attached to this tutorial.

Line 2:

Here an AJAX Request reads the php file "getscores.php" from your server

Line 3:

"On Completed" the Reading of Scores, we will receive the data in Ajax.LastData. Here is the actions we will do:

a) Set the group "Do Array" active: to show a Top 10 Leaderboard with names and scores

b) Read the Best Score #1 (name and score) and write that in a Text field.

Do Array:

This group reads the 10 scores received and populates the Text fields.

Scores are received as a string with the following format: name1|score1|name2|score2|name3|score3...

Example:

We split this info using the separator "|". To access any of them you can use this:

"Best Score: " & tokenat(AJAX.LastData, 0, "|") & " - " & tokenat(AJAX.LastData, 1, "|")

Example:

"1st best score: " & tokenat(AJAX.LastData, 0, "|") & " - " & tokenat(AJAX.LastData, 1, "|")

"2nd best score: " & tokenat(AJAX.LastData, 2, "|") & " - " & tokenat(AJAX.LastData, 3, "|")

"3rd best score: " & tokenat(AJAX.LastData, 4, "|") & " - " & tokenat(AJAX.LastData, 5, "|")

etc

Sending Scores

For sending scores, you can read the example .capx:

Line 8:

When you click "Submit", your typed name and the score (randomly generated in this example) will be sent to 'savescores.php'

Line 9:

This is an example of doing some action when the score sending is succesfully "Completed". In this case, we will reload again the best scores. And we write a Text message "Score Saved!"

BONUS: Get Player's Rank

Want to know your Rank? By popular demand, a 'getrank.php' file has been included inside this tutorial. You call this file like this: [YOUR-DOMAIN]/getrank.php?score=57 (use the current player's best score)

Example:

https://duquekarlgames.000webhostapp.com/getrank.php?score=57

This will check all the scores in the database higher than '57'. Let's say we have scores '100' and '93' and '48'. Then the php file will return rank: '3' for score '57'. Because with your score we found 2 better guys, so you are number 3.

This is included in the .capx example.

What's Next?

This is a basic High Score system to learn the basics. Once you understand well what is happening behind the scenes, I suggest you to play around and make a few improvements.

Here is a list of a few things you can do:

  • Add an 'email' field/column to your 'scores' table.
  • Add a 'time' column to your 'scores' table to save when the score was submitted.
  • You can have scores separated by 'level' or by 'difficulty' (easy, medium, hard).
  • Prevent Cheating. Idea: Add a secret key when you send scores to [YOUR-SITE]/savescores.php?name=john&score=51&hash=[7hdndid2in2d...]. Then you can decypher this key inside 'savescores.php' and it should correspond with the submitted score. This way you guess if the score is real or fake. If the score/key is invalid, you don't save it to the DB. Idea 2: "record" player's input and save it (moves, rand seed, etc). Replay the game and check if the score is correct.
  • Only One (the best) score per person.
  • If you have 2 or more games on the same DB, you will need different table names. Like "flappybird-scores" and "stickninja-scores".
  • Inside your .capx you can make Leaderboard pages, like: page 1 [scores 1-10], page 2 [scores 11-20], etc.

Final Words

Any other thing you need to do, leave your questions. You can find great PHP and MySQL tutorials on https://www.w3schools.com/. Also try Google, there is a lot of info on PHP and scores, etc.

Hope you find this tutorial useful. Let your comments at the bottom!

Enjoy and thanks for reading!

.ZIP
.CAPX

highscore-example.capx

Download now 180.37 KB
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  • Great tutorial for a refresher. Ive just finished reading through the tutorial and will soon be implementing the PHP.

  • [FIXED] The scripts save/get should be updated according to the latest PHP formatting rules. After fiddling after a bit I found that in the save.php you should remove the "id" parts when inserting the score.

  • Thank you so much for posting this! I got this to work with construct 3 and now im integrating the code with my custom name writing and text graphics. (Any thing system font is ugly on any device).

    Also a great way to learn interaction with construct 3 and a server.

    • Great! Yes, it should work in C3 as well.

      If you liked my tutorial, give it some love! A thumbs up or Favorite, so it can help others too ;)

  • Is there anyway for me to change the code so that is will give you the lowest scores as my game doesn't have a score but rather a speed run clock that goes up the longer you take to finish. So my "high scores" need to be the ones with the lowest values can you help me at all with where and what in the code I need to change?

    • Yes!

      Open 'getscores.php' and replace "ORDER BY score DESC" (scores are ordered DESCending - higher first then lower) with "ORDER BY score ASC" (scores will be ordered ASCending - lowest values first, then higher)

      // Retrieve data from database

      $sql = "SELECT *

      FROM scores

      ORDER BY score DESC // Replace 'DESC' with 'ASC'

      LIMIT 10"; // The 'LIMIT 10' part will only read 10 scores. Feel free to change this value

    • [-] [+]
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    • Do2
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    Thanks!

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