A version of putcsv that returns a string rather than writes to a file

str_putcsv.php

<?php

/**
 * @param array $data
 * @return string
 */
public function str_putcsv($data)
{
    $fh = fopen('php://memory', 'rwb');
    
    fputcsv($fh, $data);
    fseek($fh, 0);
    $csv = fgets($fh);
    
    fclose($fh);
    
    return $csv;
}