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run code in 150+ php & hhvm versions
Bugs & Features
<?php function countingSort(array $arr) { $n = sizeof($arr); $p = array(); $sorted = array(); for ($i = 0; $i < $n; $i++) { $p[$i] = 0; } for ($i = 0; $i < $n; $i++) { for ($j = $i + 1; $j < $n; $j++) { if ($arr[$i] > $arr[$j]) { $p[$i]++; } else { $p[$j]++; } } } for ($i = 0; $i < $n; $i++) { $sorted[$p[$i]] = $arr[$i]; } return $sorted; } // Example: $arr = array(255,1,22,3,45,5); $csresult = countingSort($arr); print_r($csresult);
Output for 5.1.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Array ( [5] => 255 [0] => 1 [3] => 22 [1] => 3 [4] => 45 [2] => 5 )
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/rr66C on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_ARRAY, expecting ')' in /in/rr66C on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_ARRAY, expecting ')' in /in/rr66C on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/rr66C on line 2
Process exited with code 255.