// Highlight any code...
function highlight_php_code($code)
{
	global $context;
 
	// Remove special characters.
	$code = un_htmlspecialchars(str_replace(array('<br />', "\t", '&#91;'), array("\n", 'SMF_TAB();', '['), $code));
 
	// It's easier in 4.2.x+.
	if (version_compare(PHP_VERSION, '4.2.0') == -1)
	{
		ob_start();
		highlight_string($code);
		$buffer = str_replace(array("\n", "\r"), '', ob_get_contents());
		ob_end_clean();
	}
	else
		$buffer = str_replace(array("\n", "\r"), '', highlight_string($code, true));
 
	// Yes, I know this is kludging it, but this is the best way to preserve tabs from PHP :P.
	$buffer = preg_replace('~SMF_TAB(?:</(?:font|span)><(?:font color|span style)="[^"]*?">)?\\(\\);~', '<pre style="display: inline;">' . "\t" . '</pre>', $buffer);
 
	return str_replace(array('\'', '<code>', '</code>'), array('&#039;', '', ''), $buffer);
}