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@ 2015-11-28T20:55:15Z

<?php

$arr = [
		[15, 16, 8, 1],
		[2, 3, 4, 7],
		[9, 11, 19, 6]
];

function bubbleSortRowCol(&$arr) {
    $colCount = count($arr[0]);
    $rowCount = count($arr);
    $tempArr = [];
    $columnArr = [];
    
    for($i = 0; $i < $colCount; $i++) {
        $columnArr[$i] = bubbleSort(array_column($arr, $i));
    }
    
    for($i = 0; $i < $colCount; $i++) {
        $columnArr[$i] = bubbleSort(array_column($columnArr, $i));
    }
    
    for($i = 0; $i < $rowCount; $i++) {
        $tempArr[$i] = bubbleSort(array_column($columnArr, $i));
    }
    
    $arr = $tempArr;
}

function bubbleSort($arr)
{
    $n = sizeof($arr);    
    for ($i = 1; $i < $n; $i++) {
        $flag = false;
        for ($j = $n - 1; $j >= $i; $j--) {
            if($arr[$j-1] > $arr[$j]) {
                $tmp = $arr[$j - 1];
                $arr[$j - 1] = $arr[$j];
                $arr[$j] = $tmp;
                $flag = true;
            }
        }
        if (!$flag) {
            break;
        }
    }

    return $arr;
}

function bSort($arr) {
    
    bubbleSortRowCol($arr);
    
    return $arr;
}

print_r(bSort($arr));

Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: Array ( [0] => Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 ) [1] => Array ( [0] => 2 [1] => 6 [2] => 7 [3] => 11 ) [2] => Array ( [0] => 3 [1] => 8 [2] => 8 [3] => 19 ) )
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Array ( [0] => Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 ) [1] => Array ( [0] => 2 [1] => 6 [2] => 7 [3] => 11 ) [2] => Array ( [0] => 3 [1] => 8 [2] => 8 [3] => 19 ) )

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