What are the common challenges faced when sorting data in PHP based on multiple criteria, such as clicks and manufacturer?

When sorting data in PHP based on multiple criteria, such as clicks and manufacturer, a common challenge is determining the correct order of precedence for each criteria. One way to solve this is by using the `usort` function in PHP along with a custom comparison function that considers both criteria. 

// Sample data array
$data = [
    ['clicks' => 10, 'manufacturer' => 'Apple'],
    ['clicks' => 15, 'manufacturer' => 'Samsung'],
    ['clicks' => 5, 'manufacturer' => 'Apple'],
    ['clicks' => 20, 'manufacturer' => 'Samsung'],
];

// Custom comparison function
usort($data, function($a, $b) {
    if ($a['clicks'] == $b['clicks']) {
        return strcmp($a['manufacturer'], $b['manufacturer']);
    }
    return $b['clicks'] - $a['clicks'];
});

// Output sorted data
print_r($data);

Keywords

sorting data PHP multiple criteria manufacturer

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