Removing comments

[Ultragames]

I need to have PHP read another file, and do two things (at least there are two that I don't know how to do.)

1) Delete anything after and including a // but only on that line. The line does not need to start with the // but if it exists, everything on the line after the // and including the // need to go.

2) Delete anything inbetween and including a /* and */ on any number of lines.

Basicly what I am doing is removing any comments from a JavaScript file. I am also replacing new lines and tabs with spaces, however I don't need help with that part of it.

Thank you for your help in figuring this one out.

[FuZion]

I would use regex in the preg_replace function.

This regex should work: /\/\*(.+)\*\//
I'm not the best with this stuff so someone may have a better way.. I'm pretty sure that'll work though.. hope this helps!

[Ultragames]

Your regex dosn't appear to do anything at all...

PHP Code:

$var = <<<HEREDOC
        var code = 'test'; // Remove me!
        /*
            Remove this too
        */
        var code = 'test';
HEREDOC;

    print_r( preg_replace('/\/\*(.+)\*\//', '', $var) ); 


Returns:

var code = 'test'; // Remove me!
/*
	Remove this too
*/
var code = 'test';

And should return:

var code = 'test';
var code = 'test';

Did I miss a step?

[s_pradeep]

You'll need to different regexes, one for single line comments and one for multi-line comments.

PHP Code:

<?php
$var = <<<HEREDOC
        var code = 'test'; // Remove me!
        /*
            Remove this too
        */
        var code = 'test';
HEREDOC;

    $var = preg_replace('!//.+!', '', $var);  
    $var = preg_replace('!/\*.+\*/!s', '', $var);  

    printf('<pre>%s</pre>',$var);
?>

[s_pradeep]

A small fix here...

PHP Code:

<?php
$var = <<<HEREDOC
        var code = 'test'; // Remove me!
        /*
            Remove this too
        */

        if(test) { callem();/* one more here */ return 1;} // test ok
        /* hahahah */
        var code = 'test';
HEREDOC;

    //printf('<pre>%s</pre>',$var);

    $var = preg_replace('!//.+!', '', $var);  
    $var = preg_replace('!/\*[^/\\*]+\*/!s', '', $var);  

    printf('<pre>%s</pre>',$var);
?>

[Ultragames]

Thank you very much!