PHP kézikönyv
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# CXXVI. Tokenizer Functions

# Bevezetés

The tokenizer functions provide an interface to the PHP tokenizer embedded in the Zend Engine. Using these functions you may write your own PHP source analyzing or modification tools without having to deal with the language specification at the lexical level.

See also the appendix about tokens.

# Követelmények

Az itt leírt függvények használatához semmilyen külső függvénykönyvtár megléte nem szükségeltetik.

# Telepítés

Beginning with PHP 4.3.0 these functions are enabled by default. For older versions you have to configure and compile PHP with --enable-tokenizer. You can disable tokenizer support with --disable-tokenizer.

A PHP Windowsos változata beépített támogatással rendelkezik eme kiterjesztéshez. nincs szükség semmilyen kiterjesztés betöltésére, hogy az itt felsorolt függvnyeket használhasd.

> Megjegyzés: Builtin support for tokenizer is available with PHP 4.3.0.

# Előre definiált állandók

Az itt listázott állandókat ez a kiterjesztés definiálja, és csak akkor elérhetőek, ha az adott kiterjesztés be van fordítva a PHP-be, vagy dinamikusan betöltött.

`T_INCLUDE` (integer)

`T_INCLUDE_ONCE` (integer)

`T_EVAL` (integer)

`T_REQUIRE` (integer)

`T_REQUIRE_ONCE` (integer)

`T_LOGICAL_OR` (integer)

`T_LOGICAL_XOR` (integer)

`T_LOGICAL_AND` (integer)

`T_PRINT` (integer)

`T_PLUS_EQUAL` (integer)

`T_MINUS_EQUAL` (integer)

`T_MUL_EQUAL` (integer)

`T_DIV_EQUAL` (integer)

`T_CONCAT_EQUAL` (integer)

`T_MOD_EQUAL` (integer)

`T_AND_EQUAL` (integer)

`T_OR_EQUAL` (integer)

`T_XOR_EQUAL` (integer)

`T_SL_EQUAL` (integer)

`T_SR_EQUAL` (integer)

`T_BOOLEAN_OR` (integer)

`T_BOOLEAN_AND` (integer)

`T_IS_EQUAL` (integer)

`T_IS_NOT_EQUAL` (integer)

`T_IS_IDENTICAL` (integer)

`T_IS_NOT_IDENTICAL` (integer)

`T_IS_SMALLER_OR_EQUAL` (integer)

`T_IS_GREATER_OR_EQUAL` (integer)

`T_SL` (integer)

`T_SR` (integer)

`T_INC` (integer)

`T_DEC` (integer)

`T_INT_CAST` (integer)

`T_DOUBLE_CAST` (integer)

`T_STRING_CAST` (integer)

`T_ARRAY_CAST` (integer)

`T_OBJECT_CAST` (integer)

`T_BOOL_CAST` (integer)

`T_UNSET_CAST` (integer)

`T_NEW` (integer)

`T_EXIT` (integer)

`T_IF` (integer)

`T_ELSEIF` (integer)

`T_ELSE` (integer)

`T_ENDIF` (integer)

`T_LNUMBER` (integer)

`T_DNUMBER` (integer)

`T_STRING` (integer)

`T_STRING_VARNAME` (integer)

`T_VARIABLE` (integer)

`T_NUM_STRING` (integer)

`T_INLINE_HTML` (integer)

`T_CHARACTER` (integer)

`T_BAD_CHARACTER` (integer)

`T_ENCAPSED_AND_WHITESPACE` (integer)

`T_CONSTANT_ENCAPSED_STRING` (integer)

`T_ECHO` (integer)

`T_DO` (integer)

`T_WHILE` (integer)

`T_ENDWHILE` (integer)

`T_FOR` (integer)

`T_ENDFOR` (integer)

`T_FOREACH` (integer)

`T_ENDFOREACH` (integer)

`T_DECLARE` (integer)

`T_ENDDECLARE` (integer)

`T_AS` (integer)

`T_SWITCH` (integer)

`T_ENDSWITCH` (integer)

`T_CASE` (integer)

`T_DEFAULT` (integer)

`T_BREAK` (integer)

`T_CONTINUE` (integer)

`T_OLD_FUNCTION` (integer)

  `T_OLD_FUNCTION` is not defined in PHP 5.

`T_FUNCTION` (integer)

`T_CONST` (integer)

`T_RETURN` (integer)

`T_USE` (integer)

`T_GLOBAL` (integer)

`T_STATIC` (integer)

`T_VAR` (integer)

`T_UNSET` (integer)

`T_ISSET` (integer)

`T_EMPTY` (integer)

`T_CLASS` (integer)

`T_EXTENDS` (integer)

`T_OBJECT_OPERATOR` (integer)

`T_DOUBLE_ARROW` (integer)

`T_LIST` (integer)

`T_ARRAY` (integer)

`T_LINE` (integer)

`T_FILE` (integer)

`T_COMMENT` (integer)

`T_ML_COMMENT` (integer)

  `T_ML_COMMENT` is not defined in PHP 5. All comments in PHP 5 are of token `T_COMMENT`.

`T_DOC_COMMENT` (integer)

  `T_DOC_COMMENT` was introduced in PHP 5.

`T_OPEN_TAG` (integer)

`T_OPEN_TAG_WITH_ECHO` (integer)

`T_CLOSE_TAG` (integer)

`T_WHITESPACE` (integer)

`T_START_HEREDOC` (integer)

`T_END_HEREDOC` (integer)

`T_DOLLAR_OPEN_CURLY_BRACES` (integer)

`T_CURLY_OPEN` (integer)

`T_PAAMAYIM_NEKUDOTAYIM` (integer)

`T_DOUBLE_COLON` (integer)

`T_INTERFACE` (integer)

  PHP 5 only.

`T_IMPLEMENTS` (integer)

  PHP 5 only.

`T_CLASS_C` (integer)

  PHP 5 only.

`T_FUNC_C` (integer)

  PHP 5 only.

`T_METHOD_C` (integer)

  PHP 5 only.

`T_ABSTRACT` (integer)

  PHP 5 only.

`T_CATCH` (integer)

  PHP 5 only.

`T_FINAL` (integer)

  PHP 5 only.

`T_INSTANCEOF` (integer)

  PHP 5 only.

`T_PRIVATE` (integer)

  PHP 5 only.

`T_PROTECTED` (integer)

  PHP 5 only.

`T_PUBLIC` (integer)

  PHP 5 only.

`T_THROW` (integer)

  PHP 5 only.

`T_TRY` (integer)

  PHP 5 only.

`T_CLONE` (integer)

  PHP 5 only.

# Példák

Here is a simple example PHP scripts using the tokenizer that will read in a PHP file, strip all comments from the source and print the pure code only.

Példa 1. Strip comments with the tokenizer

`<?php
/*
* T_ML_COMMENT does not exist in PHP 5.
* The following three lines define it in order to
* preserve backwards compatibility.
*
* The next two lines define the PHP 5 only T_DOC_COMMENT,
* which we will mask as T_ML_COMMENT for PHP 4.
*/
if (!defined('T_ML_COMMENT')) {
define('T_ML_COMMENT', T_COMMENT);
} else {
define('T_DOC_COMMENT', T_ML_COMMENT);
}
$source = file_get_contents('example.php');
$tokens = token_get_all($source);
foreach ($tokens as $token) {
if (is_string($token)) {
// simple 1-character token
echo $token;
} else {
// token array
list($id, $text) = $token;
switch ($id) {
case T_COMMENT:
case T_ML_COMMENT: // we've defined this
case T_DOC_COMMENT: // and this
// no action on comments
break;
default:
// anything else -> output "as is"
echo $text;
break;
}
}
}
?>`

Előző | Tartalom | Következő
tidyNode->isPhp | Fel | token_get_all