Online PHP editor | output for hugBj

@ 2018-10-14T04:24:49Z

<?php
$file = [
    [0, 'a', 1, 2],
    [0, 'a', 1, 2],
    [0, 'b', 1, 2],
];
 
    $fieldNames = [
        'id',
        'location',
        'blankets',
        'sleepingbags'
    ];
 
    $sumBlankets = [];

    foreach ($file as $i => $line) {
        $row = array_combine($fieldNames, $line);
        
        $k = $row['location']; // important
 
        if (!array_key_exists($k, $sumBlankets)) {
            $sumBlankets[$k] = ['blankets'=>0, 'sleepingbags'=>0];
        }
 
        $sumBlankets[$k]['blankets'] += $row['blankets'];
        $sumBlankets[$k]['sleepingbags'] += $row['sleepingbags'];
    }
  
 
    var_export( $sumBlankets );

Output for 5.6.38, 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 ( 'a' => array ( 'blankets' => 2, 'sleepingbags' => 4, ), 'b' => array ( 'blankets' => 1, 'sleepingbags' => 2, ), )
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 ( 'a' => array ( 'blankets' => 2, 'sleepingbags' => 4, ), 'b' => array ( 'blankets' => 1, 'sleepingbags' => 2, ), )

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