BBcode Parser

[Clarkeez]

Hey

 

This is the current function I am using to parse bbcode to their respective html tags from a string.

The problem is, if the given string has for example they forget to put the ending tag [/b] after they have used then the rest of the page is bold.

How can I stop this?

<?php
function bbcode($input) {
$bbcode = array('[b]', '[/b]', '[i]', '[/i]', '[u]', '[/u]', '
[center]', '[/center]
');
$htcode = array('<b>', '</b>', '<i>', '</i>', '<u>', '</u>', '<center>', '</center>');
return str_replace($bbcode, $htcode, $input);
}
?>

 

HTML

<div class="post">
<?php echo bbcode($sql_data['post']); ?> <!-- <This guy forgets to end his bold tag -->
</div>

<div class="post">
<?php echo bbcode($sql_data['post']); ?> <!-- <This guys post is now bold -->
</div>

[jcbones]

When I run bbcode, I require that both opening and closing brackets are in place, otherwise the bracket will just be printed out.

 

function bbcode($content)
{
$content = preg_replace("~\[b\](.+?)\[\/b\]~i", "<b>$1</b>", $content);
$content = preg_replace("~\[i\](.+?)\[\/i\]~i", "<i>$1</i>", $content);
$content = preg_replace("~\[u\](.+?)\[\/u\]~i", "<u>$1</u>", $content);
$content = preg_replace("~\[img\](.+?)\[\/img\]~i", "<img src=\"$1\" alt=\"\" />", $content);
$content = preg_replace("~\[url\](.+?)\[\/url\]~i", "<a href=\"$1\">[Link]</a>", $content);
$content = preg_replace("~\[url=http://(.+?)\](.+?)\[\/url\]~i", "<a href=\"$1\">$2</a>", $content);
$content = preg_replace("~\[code\](.+?)\[\/code\]~i", "<div class=\"box\">$1</div>", $content);
return($content);
}