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One liner to get a CSV file into 2-dimentional array (NB! Only works if “,” is the separator!!!):

$csv = array_map('str_getcsv', file('data.csv'));

Work with each line in a CSV file:

$handle = fopen("data_sample_5_sec.csv", "r");
 
$is_first_row_header = true;
 
for ($i = 0; $row = fgetcsv($handle ); ++$i) {
    if ($is_first_row_header AND $i == 0) {
        $headers = $row;
        continue;
    }
 
    // Do something with $row array
    $row[''];
}
fclose($handle);