string getTokens ([string|array rule key names])Gets the $tokens property array; i.e., the descriptions of each matching rule that has removed text from the parsed source.By default, getTokens() returns the entire $tokens array.If you specify a rule name as the only parameter, only those tokens for that rule will be returned. You can also specify a sequential array of rule key names and only those tokens will be returned.

 
// [snip] create a Text_Wiki object called $wiki
// [snip] load some source text into $text
$wiki->parse($text);
 
// get back all tokens that were matched from the source text
$all_tokens = $wiki->getTokens();
 
// get back only the wikilink tokens
$wikilink_tokens = $wiki->getTokens('wikilink');
 
// get back only the heading and toc tokens
$heading_toc_tokens = $wiki->getTokens(array('heading', 'toc'));