Array to CSV with PHP

php-array-to-csv-function

/**
 * Array to CSV
 */
function array2csv( $array) { 

  // Check input
  if ( !is_array( $array ) || count( $array ) == 0 ) {  return null; } 
  
  // Buffer output
  ob_start(); 
  $df = fopen("php://output", 'w'); 
  fputcsv($df, array_keys( reset($array) ) ); 
  foreach ($array as $row) {  
    fputcsv($df, $row); 
  } 
  fclose($df); 

  // return constructed csv with header
  return ob_get_clean();
}