Constantes predefinidas
Code snippet posted above is perfect enough, and I just wanted to put same code in a function that gets argument as code and returns the comments stripped code, so that it is easy for a beginner too, to copy and use this code.
<?
if (!defined('T_ML_COMMENT')) {
define('T_ML_COMMENT', T_COMMENT);
} else {
define('T_DOC_COMMENT', T_ML_COMMENT);
}
function strip_comments($source) {
$tokens = token_get_all($source);
$ret = "";
foreach ($tokens as $token) {
if (is_string($token)) {
$ret.= $token;
} else {
list($id, $text) = $token;
switch ($id) {
case T_COMMENT:
case T_ML_COMMENT: // we've defined this
case T_DOC_COMMENT: // and this
break;
default:
$ret.= $text;
break;
}
}
}
return trim(str_replace(array('<?','?>'),array('',''),$ret));
}
?>
1.Now using this function 'strip_comments' for passing code contained in some variable:
<?
$code = "
<?php
/* this is comment */
// this is also a comment
# me too, am also comment
echo "And I am some code...";
?>";
$code = strip_comments($code);
echo htmlspecialchars($code);
?>
Will result output as
<?
echo "And I am some code...";
?>
2.Loading from a php file:
<?
$code = file_get_contents("some_code_file.php");
$code = strip_comments($code);
echo htmlspecialchars($code);
?>
3. Loading a php file, stripping comments and saving it back
<?
$file = "some_code_file.php"
$code = file_get_contents($file);
$code = strip_comments($code);
$f = fopen($file,"w");
fwrite($f,$code);
fclose($f);
?>
regards
Ali Imran
Ejemplos
Aquí hay un simple ejemplo de scripts PHP donde se usa el tokenizer para leer en un archivo PHP, quitar todo los comentarios del archivo original y mostrar solamente el código puro.
Ejemplo #1 Quitar comentarios con el tokenizer
<?php
/*
* T_ML_COMMENT no existe en PHP 5.
* Las siguientes tres líneas lo definen para
* preservar compatibilidades anteriores.
*
* Las siguientes dos líneas definen el T_DOC_COMMENT de PHP 5,
* el cual será sobreescrito como T_ML_COMMENT para 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: // hemos definido esto
case T_DOC_COMMENT: // y esto
// ninguna acción en comentarios
break;
default:
// cualquier otra cosa -> salida "tal cual"
echo $text;
break;
}
}
}
?>
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User Contributed Notes
Ejemplos - [1 notes]
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3 years ago