append data in csv file php

$handle = fopen("test.csv", "a");
fputcsv($handle, $line); # $line is an array of strings (array|string[])
fclose($handle);

<?php
$list = array
(
'Peter,Griffin,Oslo,Norway',
'Glenn,Quagmire,Oslo,Norway',
);

$file = fopen('contacts.csv','a');  // 'a' for append to file - created if doesn't exit

foreach ($list as $line)
  {
  fputcsv($file,explode(',',$line));
  }

fclose($file); 
?>