Online PHP editor | output for C16kU

@ 2017-05-04T12:04:50Z

<?php

$array = [ [ 0 => '1' , 1 => '2' ],
           [ 0 => '1' , 1 => '3' ],
           [ 0 => '2' , 1 => '4' ],
           [ 0 => '3' , 1 => '3' ],
           [ 0 => '2' , 1 => '7' ],
           [ 0 => '1' , 1 => '5' ],
           [ 0 => '2' , 1 => '6' ]
         ];

$result = array();
foreach ($array as $row) {
    if (isset($result[$row[0]])) {
        $result[$row[0]] += $row[1];
    } else {
        $result[$row[0]] = $row[1];
    }
}

print_r($result);

Output for 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 ( [1] => 10 [2] => 17 [3] => 3 )
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 ( [1] => 10 [2] => 17 [3] => 3 )

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