(PHP 5 >= 5.4.0)
SplFileObject::fputcsv — Write a field array as a CSV line
$fields
   [, string $delimiter = ","
   [, string $enclosure = '"'
   [, string $escape = "\"
  ]]] )
   Writes the fields array to the file as a CSV line.
  
fieldsAn array of values.
delimiter
      The optional delimiter parameter sets the field
      delimiter (one character only).
     
enclosure
      The optional enclosure parameter sets the field
       enclosure (one character only).
     
escape
      The optional escape parameter sets the
       escape character (one character only).
     
   Returns the length of the written string or FALSE on failure.
  
   Returns FALSE, and does not write the CSV line to the file, if the
   delimiter or enclosure
   parameter is not a single character.
  
   An E_WARNING level error is issued if the
   delimiter or enclosure
   parameter is not a single character.
  
| Version | Description | 
|---|---|
| 5.5.21, 5.6.5 | Added the escapeparameter. | 
Example #1 SplFileObject::fputcsv() example
<?php
$list = array (
    array('aaa', 'bbb', 'ccc', 'dddd'),
    array('123', '456', '789'),
    array('"aaa"', '"bbb"')
);
$file = new SplFileObject('file.csv', 'w');
foreach ($list as $fields) {
    $file->fputcsv($fields);
}
?>
The above example will write the following to file.csv:
aaa,bbb,ccc,dddd 123,456,789 """aaa""","""bbb"""