Online PHP editor | output for qGp6P

@ 2020-02-10T19:33:37Z

<?php

$matrix = [
    [11, 12, 13, 14, 15], 
    [21, 22, 23, 24, 25], 
    [31, 32, 33, 34, 35], 
    [41, 42, 43, 44, 45], 
    [51, 52, 53, 54, 55]
];

echo "До:\n";
foreach($matrix as $_) {
    foreach($_ as $item) echo $item . ' '; echo PHP_EOL;
}

echo "\n";

for ($i = 0; $i < count($matrix); $i++) {
    for ($j = $i + 1; $j < count($matrix); $j++) {
        $temp = $matrix[$i][$j];
        $matrix[$i][$j] = $matrix[$j][$i];
        $matrix[$j][$i] = $temp;
    }
}
echo "После:\n";
foreach($matrix as $innerArray){
    foreach($innerArray as $item){
        echo $item . ' ';
    }
    echo PHP_EOL;
}

Output for 7.2.0 - 7.2.34, 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 - 8.3.7: До: 11 12 13 14 15 21 22 23 24 25 31 32 33 34 35 41 42 43 44 45 51 52 53 54 55 После: 11 21 31 41 51 12 22 32 42 52 13 23 33 43 53 14 24 34 44 54 15 25 35 45 55
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 До: 11 12 13 14 15 21 22 23 24 25 31 32 33 34 35 41 42 43 44 45 51 52 53 54 55 После: 11 21 31 41 51 12 22 32 42 52 13 23 33 43 53 14 24 34 44 54 15 25 35 45 55

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