This tutorial show's how to create a new CSV file through PHP script.
This script is more helpful for php developer to create a new CSV file in array formate.

function functionname (parameter)
{
    if (($handle = fopen("$data", "r")) !== FALSE) 
    {
        while (($csv_data = fgetcsv($handle, 1000, ",")) !== FALSE) 
        { 
           $categorydata[]=$csv_data;     
            }
        } 
        $categorynum=count($categorydata);
        $categorydata[$categorynum][1]=$new_cat_name;
        $categorydata[$categorynum][2]='1';
        $categorydata[$categorynum][3]='n';
        $categorydata[$categorynum][4]='0';
        $categorydata[$categorynum][5]=$overcategory;
        $filepointer = fopen($data, 'w') or error('ggg');
        foreach($categorydata as $updated_data)
        {
         fputcsv($filepointer,$updated_data);
        }
        fclose($filepointer);
}