php man page for http_negotiate_charset

HTTP_NEGOTIATE_CHARSET(3)						 1						 HTTP_NEGOTIATE_CHARSET(3)

http_negotiate_charset - Negotiate client's preferred character set

SYNOPSIS
       string http_negotiate_charset (array  $supported, [array  &$result])

DESCRIPTION
	This  function	negotiates the clients preferred charset based on its Accept-Charset HTTP header. The qualifier is recognized and charsets
       without qualifier are rated highest.

PARAMETERS
	      o $supported
		- array containing the supported charsets as values

	      o $result
		- will be filled with an array containing the negotiation results

RETURN VALUES
	Returns the negotiated charset or the default charset (i.e. first array entry) if none match.

EXAMPLES
       Example #1

	      Using http_negotiate_charset(3)

	      <?php
	      $charsets = array(
		      'iso-8859-1', // default
		      'iso-8859-2',
		      'iso-8859-15',
		      'utf-8'
	      );

	      $pref = http_negotiate_charset($charsets, $result);

	      if (strcmp($pref, 'iso-8859-1')) {
		      iconv_set_encoding('internal_encoding', 'iso-8859-1');
		      iconv_set_encoding('output_encoding', $pref);
		      ob_start('ob_iconv_handler');
	      }

	      print_r($result);
	      ?>

PHP Documentation Group 												 HTTP_NEGOTIATE_CHARSET(3)