Exemplos

Aqui está um exemplo simples de scripts PHP usando o tokenizer que lerá um arquivo PHP, retirará todos os comentários do fonte e imprimirá apenas o código puro.

Exemplo #1 Retirando os comentários com o 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;
}
}
}
?>
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