Random script issues

[Delusion]

Hello,

Generally, I'll describe what was my idea at first.

I've been trying to make a script for my school (football, 1vs1) that will make me random teams selection.

The main idea about it, I got 11 teams, The random I was trying to do:

Each team should play 20 games in a season, with each team playing each other TWICE at a season.

I've tried to make this using a 'FOR' loops but I've got double games and alot of mess.

Here's my try:

<?
echo "<table>";
 for($i=1 , $c=1 , $b=4 , $a=1 ; $i <= 110 ; $i++ , $c+=1 , $b++, $a++) {

   echo "<tr>";
     echo "<td width='100' align='left'>$i</td>";
     echo "<td>team $a</td>";
     echo "<td>vs.</td>";
     echo "<td>team $b</td>";
   echo "</tr>";

  // Storing the DATA at MySQL irrelevant now

   if ($a >= "11") { $a = "0"; }
   if ($b >= "11") { $b = "0"; }
   if ($c >= "6") { $c = "0"; echo "<tr><td colspan='5'><hr></td></tr>"; }
 }

echo "</table>";
?>

I've spent alot of time trying to make it work and failed 🙁
I hope someone around will be able helping me!

Thanks in advnace.

[leatherback]

Hi,

Isn't it much easier to fill an array twice with all possible combinations, and then shuffle the array before producing the output?

Have a look at [man]shuffle
[/man]

[Delusion]

First of all, I would like to thank you for such a quick reply!!

But how can I avoid double games?

The shuffle is able to select same team more than once.

[leatherback]

Well,

You have each team playing the each other team twice right?
So you have to fill your array with each possible combination of two teams. Then double that array, and shuffle the deck, so to speak. Fill the array like this:

// untested, example only;

$i=0;

for ($a<12; $a>0; $b=$a-1; $a=1; $a++)
  {
  for($b>0; $b--)
   {
   match[$i] = "t$a vss t$b";
   $i++;
   }
 }

srand((float)microtime() * 1000000);
shuffle($match);
}

J.

[Delusion]

Running the code give me the following error:

Parse error: parse error, expecting `')'' in /home/delusion/public_html/teams_test_12.php on line 5

From what i've seen the form of the FOR is wrong, tho I coudln't fix it.

//Correct form of FOR

FOR ($i = 1; $i <= 5; $i++) {
   echo "$i";
}

[leatherback]

said it was untested ;-)

here goes:

<?php

$i=0; 
$a = 1;

for($a=1; $a<12; $b=$a-1) 
  { 
  for($b = $b; $b>0; $b--) 
   { 
   $match[$i] = "t$a vss t$b"; 
   $i++; 
   } 
   $a++;
 } 

srand((float)microtime() * 1000000); 
shuffle($match); 


foreach($match as $value)
 {
   echo $value."<br>";
  }
?>

[Delusion]

OMFG!!!
Thanks you VERY MUCH!!
it's working perfect!

Thanks again!