8 replies to this topic

[bbqroast]

Hello,
While thinking of making a forum one of he problems i can up with was:
How to let the user format the tyext while stopping bad code???
I also discovered that text box input uses /n instead of <br>. So my to questions:
What would be the best way to let certain code through?
My idea was to use magic quotes (or something like it) to convert <br> into <br> then turn
certain bits back into <br> with the replace() (or something like it) function. Is their an easier way?

Thanks in advanced (I have read "common php questions" by Nullworm- but found the bit about this a bit under covered- I understand it was just a reference so we know what to ask for).

EDIT: Just remebered what i was going to say:
How do i convert /n to <br> (YES I DID READ THAT PART FROM NULLWORM).

[Orjan]

that's why forums usually use BBcode, as it's just not html-tags, but almost. safer for all.

[DEViANT]

If I may advise you, save yourself the time and trouble and just get this :

TinyMCE - Home

[Takumi]

If you do want to do it on your own, take a look at this function:

preg_replace($pattern, $replacement, $string);

PHP: preg_replace - Manual

Takumi

[bbqroast]

@ORjANT
Yes I guess it is like BBCode any pointers??
@DEViAnT
Yes but is that going to slide into my site perfectly and intergrate keenly with my current login system. Do you have any idea how strange it seems when forums dedicated to coding are made using a code free installer???

Besides I'm having tons of fun making it.

@Takumi
+rep +rep Thanks much

[Orjan]

a pointer for BBcode is actually to php it self... PHP: BBCode - Manual

[Alexander]

Actually if you're interested in regular expressions for the matter, I wrote up a quick function more or less 7 years ago when learning regular expressions.

function parse_bbcode($text, $smileys = true)
{
    $text = htmlentities($text);
    $tags = array(
        '#\[b\](.*?)\[/b\]#si' => '<strong>\\1</strong>',
        '#\[i\](.*?)\[/i\]#si' => '<em>\\1</em>',
        '#\[u\](.*?)\[/u\]#si' => '<u>\\1</u>',
        '#\[s\](.*?)\[/s\]#si' => '<strike>\\1</strike>',
        '#\[color=(.*?)\](.*?)\[/color\]#si' => '<font color="\\1">\\2</font>',
        '#\[img\](.*?)\[/img\]#si' =>  '<img src="\\1" border="0" alt="" />',
        '#\[url=(.*?)\](.*?)\[/url\]#si' => '<a href="\\1">\\2</a>',
        '#\[email\](.*?)\[/email\]#si' => '<a href="mailto:\\1" title="Email \\1">\\1</a>',
        '#\[code\](.*?)\[/code\]#si' => '<blockquote style="font-face: \'trebuchet ms\'; 40px;margin:6px;color:#575757;margin-left:20px;">\\1</blockquote>',
        '#\[align=(.*?)\](.*?)\[/align\]#si' => '<div style="text-align: \\1;">\\2</div>',
        '#\[br\]#si' => '<br style="clear: both;" />',
    );

    foreach ($tags as $search => $replace){
        $text = preg_replace($search, $replace, $text);
    }
    
    if ($smiley == true) {
       $smilies = array(
            ':)' => '<img src="images/smilies/smile.gif" border="0" height="16" width="16" alt="Smile" title="Smile" />',
            ':(' => '<img src="images/smilies/sad.gif" border="0" height="16" width="16" alt="Sad" title="Sad" />',
            ':D' => '<img src="images/smilies/biggrin.gif" border="0" height="16" width="16" alt="Big Grin" title="Big Grin" />',
            ':S' => '<img src="images/smilies/confused.gif" border="0" height="16" width="16" alt="Confused" title="Confused" />'
            // more here
        );

        foreach ($smilies as $search => $replace){
               $text = str_replace($search, $replace, $text);
        }
    }
    
    //nl2br allows newlines to be converted to quotes
    return nl2br($text);
}

I left the smiley support in, as it shows how to do simple translations.

[DEViANT]

bbqroast said:

@DEViAnT
Yes but is that going to slide into my site perfectly and intergrate keenly with my current login system. Do you have any idea how strange it seems when forums dedicated to coding are made using a code free installer???

The text editor can be completely customized down to the bone to look and function exactly how you would want it to. Add your own buttons, change the display, enable/disable what you want, etc.

If you wanna learn, then go for it. If your pressed for time, you might as well use it.

[bbqroast]

Look i have already started and i am going fine.
Thanks NULLW0RM (p.s. where did your spinny worm thing go???)