Description
array 
token_get_all ( string source)
     token_get_all() parses the given source 
     string into PHP language tokens using the Zend engine's lexical scanner.
     The function returns an array of token identifiers.  Each individual token
     identifier is either a single character (i.e.: ;,
     ., >, !, etc...),
     or a two element array containing the token index in element 0, and the string
     content of the original token in element 1.
    
     For a list of parser tokens, see 附录 M, or use 
     token_name() to translate a token value into its string
     representation.
    
例子 1. token_get_all() examples 
<?php   $tokens = token_get_all('<?php'); // => array(array(T_OPEN_TAG, '<?'));   $tokens = token_get_all('<?php echo; ?>'); /* => array(                                                     array(T_OPEN_TAG, '<?php'),                                                      array(T_ECHO, 'echo'),                                                     ';',                                                     array(T_CLOSE_TAG, '?>') ); */
  /* Note in the following example that the string is parsed as T_INLINE_HTML    rather than the otherwise expected T_COMMENT (T_ML_COMMENT in PHP <5).    This is because no open/close tags were used in the "code" provided.    This would be equivalent to putting a comment outside of <?php ?> tags in a normal file. */   $tokens = token_get_all('/* comment */'); // => array(array(T_INLINE_HTML, '/* comment */')); ?>
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