What are some best practices for sorting and ranking data in PHP, especially when dealing with CSV files?

When sorting and ranking data in PHP, especially when dealing with CSV files, it is important to use the appropriate functions to efficiently handle the data. One common approach is to read the CSV file into an array, sort the array based on the desired criteria, and then output the sorted data back into a new CSV file. 

// Read CSV file into an array
$csvData = array_map('str_getcsv', file('data.csv'));

// Sort the array based on a specific column (e.g., column index 1)
usort($csvData, function($a, $b) {
    return $a[1] <=> $b[1];
});

// Output the sorted data into a new CSV file
$fp = fopen('sorted_data.csv', 'w');
foreach ($csvData as $fields) {
    fputcsv($fp, $fields);
}
fclose($fp);

Keywords

Sorting ranking data PHP CSV files

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