Online PHP editor | output for 6c7uK

@ 2019-07-10T14:12:39Z

<?php

function ranking ($players_scores)
  {
  $players  = array_column($players_scores, 0);
  $scores = array_column($players_scores, 1);
  array_multisort($scores, SORT_DESC, $players, SORT_ASC, $players_scores);
  return $players_scores;
  }

function round_system ($players_scores)
  {
  $players_count ($players_scores);
  return round_count_system ($players_count);
  }

function round_count_system ($players_count)
  {
  if ($players_count < 2) return no_match ($players_count);
  if ($players_count <= 5) return everybody_battles_everybody ($players_count);
  if ($players_count == 8) return groups_with_N_players (4, (int)($players_count/4));
  if ($players_count % 4 == 0 && $players_count/4<=5) return four_groups ((int)($players_count/4));
   if ( ($players_count % 6 == 0) && (3<=$players_count/6) && ($players_count/6<=5) )
     return groups_with_N_players ((int)($players_count/6), 6);
  if ($players_count % 3 == 0) return groups_with_N_players (3, (int)($players_count/3));
  if ($players_count % 2 == 0 && $players_count<=12) return groups_with_N_players ((int)($players_count/2), 2);
  echo swiss_round ($players_count); 
  }
/*

*/

/*
$ranking = ranking ($players_scores);
var_dump ($ranking); echo "<br><br>";
*/

$players_scores = [ [1,0], [2,0], [3,0], [4,0], [5,0], [6,0], [7,0], [8,0] ];

$max_players = 30;
for ($i=0;$i<=$max_players;$i++)
 {
  echo $i." = ";
 $system = round_count_system ($i);
 echo "\n";
 }


function no_match ($players_count)
  {
  echo "No match!";
  }

function everybody_battles_everybody ($players_count)
  {
  echo "Every player battles the other players.";
  }

function four_groups ($players_count)
  {
  echo "4 groups with ".$players_count." players each.";
  }

function groups_with_N_players ($n, $players_count)
  {
  echo $players_count." "."groups with ".$n." players each.";
  }

function swiss_round ($players_count)
  {
  echo "swiss system with "; 
  echo floor (log ($players_count, 2))+1;
  echo " rounds. ";
  if ($players_count%2) echo "Some players play only ".floor (log ($players_count, 2))." matchs.";
  }

?>

Output for 7.1.25 - 7.1.30, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14, 8.5.0 - 8.5.1: 0 = No match! 1 = No match! 2 = Every player battles the other players. 3 = Every player battles the other players. 4 = Every player battles the other players. 5 = Every player battles the other players. 6 = 2 groups with 3 players each. 7 = swiss system with 3 rounds. Some players play only 2 matchs. 8 = 2 groups with 4 players each. 9 = 3 groups with 3 players each. 10 = 2 groups with 5 players each. 11 = swiss system with 4 rounds. Some players play only 3 matchs. 12 = 4 groups with 3 players each. 13 = swiss system with 4 rounds. Some players play only 3 matchs. 14 = swiss system with 4 rounds. 15 = 5 groups with 3 players each. 16 = 4 groups with 4 players each. 17 = swiss system with 5 rounds. Some players play only 4 matchs. 18 = 6 groups with 3 players each. 19 = swiss system with 5 rounds. Some players play only 4 matchs. 20 = 4 groups with 5 players each. 21 = 7 groups with 3 players each. 22 = swiss system with 5 rounds. 23 = swiss system with 5 rounds. Some players play only 4 matchs. 24 = 6 groups with 4 players each. 25 = swiss system with 5 rounds. Some players play only 4 matchs. 26 = swiss system with 5 rounds. 27 = 9 groups with 3 players each. 28 = swiss system with 5 rounds. 29 = swiss system with 5 rounds. Some players play only 4 matchs. 30 = 6 groups with 5 players each.
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
Output for 8.3.28: /bin/php-8.3.28: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.3.28)
Process exited with code 1.

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