Solved

sorting a mutli-dimensional array in PHP

Posted on 2011-02-16
2
211 Views
Last Modified: 2012-05-11
Hi there,

Well, the saga which is my first web application continues.  I recently had some help with an algorithm which calculates wins using a monthly tennis house-league matrix of scores and it works great.  But, with my limited exposure to web programming I've again reached a bit of a snag.

I have a 'Top Guns' sidebar.  I would like it to display the top 3 players in every house.  The information includes Name, Total Points, and now, Wins.  Here's what I'm looking to do...I would like the players to be sorted by Wins, and then by Total Points.  For example, if two players have 2 wins each..the one with the most points total points would appear ahead of the other guy.  Here's how my multi-dimensional array looks :

Array
(
    [0] => Array
        (
            [name] => Player 1
            [wins] => 3
            [score] => 24
        )

    [1] => Array
        (
            [name] => Player 2
            [wins] => 0
            [score] => 13
        )

    [2] => Array
        (
            [name] => Player 3
            [wins] => 1
            [score] => 12
        )

    [3] => Array
        (
            [name] => Player 4
            [wins] => 2
            [score] => 18
        )

)

Open in new window


I have the code to populate the array all set, I just need to be able to sort it according to my specifications.  Any help would be greatly appreciated!
0
Comment
Question by:duder78
2 Comments
 
LVL 15

Accepted Solution

by:
ncoo earned 500 total points
ID: 34910045
Just pass your array in to: usort($array, "winScore");

Details: http://uk3.php.net/usort

See code below.
<?php

$array = array(0 => array
        (
            'name' => 'Player 1',
            'wins' => '3',
            'score' => '24'
        ),

    1 => array
        (
            'name' => 'Player 2',
            'wins' => '0',
            'score' => '13'
        ),

    2 => array
        (
            'name' => 'Player 3',
            'wins' => '1',
            'score' => '12'
        ),

    3 => array
        (
            'name' => 'Player 4',
            'wins' => '2',
            'score' => '18'
        )

);

function winScore($a, $b)
{
    if ($a['wins'] == $b['wins']) {
		if ($a['score'] == $b['score']) {

			return 0;
		}
		return ($a['score'] < $b['score']) ? 1 : -1;
    }
    return ($a['wins'] < $b['wins']) ? 1 : -1;
}


usort($array, "winScore");

echo '<pre>';
print_r($array);

Open in new window

0
 

Author Closing Comment

by:duder78
ID: 34910178
Works like a champ, thanks alot!
0

Featured Post

Why You Should Analyze Threat Actor TTPs

After years of analyzing threat actor behavior, it’s become clear that at any given time there are specific tactics, techniques, and procedures (TTPs) that are particularly prevalent. By analyzing and understanding these TTPs, you can dramatically enhance your security program.

Join & Write a Comment

Popularity Can Be Measured Sometimes we deal with questions of popularity, and we need a way to collect opinions from our clients.  This article shows a simple teaching example of how we might elect a favorite color by letting our clients vote for …
These days socially coordinated efforts have turned into a critical requirement for enterprises.
The viewer will learn how to dynamically set the form action using jQuery.
This tutorial will teach you the core code needed to finalize the addition of a watermark to your image. The viewer will use a small PHP class to learn and create a watermark.

757 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

19 Experts available now in Live!

Get 1:1 Help Now