Online PHP editor | output for CGlsU

@ 2020-01-27T11:30:46Z

<?php

$array = [

    'item1' => [
        [
            'productCount' => '3',
            'value' => 'red',
        ],
        [
            'productCount' => '3',
            'value' => 'green',
        ],
        [
            'productCount' => '3',
            'value' => 'green',
        ]
    ],

    'item2' => [
        [
            'productCount' => '1',
            'value' => 'purple',
        ]
    ],

];

$output = array();
foreach ($array as $key => $items) {
    $output[$key] = array('productCount' => $items[0]['productCount']);
    foreach ($items as $item) {
        $value = $item['value'];
        $output[$key][$value] = ($output[$key][$value] ?? 0) + 1;
    }
}
print_r($output);

Output for 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 ( [item1] => Array ( [productCount] => 3 [red] => 1 [green] => 2 ) [item2] => Array ( [productCount] => 1 [purple] => 1 ) )
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 ( [item1] => Array ( [productCount] => 3 [red] => 1 [green] => 2 ) [item2] => Array ( [productCount] => 1 [purple] => 1 ) )

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