Comment Detecting Regex

[lococobra]

I'm having trouble catching comments inside php code. Could someone help me revise my regex or tell me how I can make this work properly.

 

My comment detection regex is:

~//.*?[\n\r]~
and
~/\*(.*?)\*/~s

 

The problem is this...

$test = 'http://google.com'; <- is not a comment!

 

How can I get this regex so it doesn't catch anything inside strings?

[rajivgonsalves]

regexp should be

~^//.*?[\n\r]~
and
~^/\*(.*?)\*/~s

 

"^" denotes at the start

[lococobra]

Doesn't exactly help. Comments aren't always at the beginning of lines.

[rajivgonsalves]

you can use the inbuilt php tokenizer : example

<?php
$str = '<?php
$test = "http://www.google.com"; // made it 

// more comments 
echo "what are comments about";
?>
';

$tokens = token_get_all($str);

foreach ($tokens as $token) {
    if ($token[0] == T_COMMENT
        || $token[0] == T_DOC_COMMENT) {
        // This is a comment ;-)
        var_dump($token);
    }
}

?>

[lococobra]

That's the ticket! Thanks that was exactly what I needed :]