Posted by Philip Ronan on 10/26/05 12:47

"Ja NE" wrote:

> sometimes people just forget to close formating tag while writing
> message in forum (or enywhere else) so I wrote those lines (for <b>, <i>
> and <a> tags)
>
> $i_open = substr_count($tekst, "<i>");
> $i_close = substr_count($tekst, "</i>");
> if($i_open > $i_close) {
> $tekst = "$tekst </i>";
> }
>
> but... I would like to have proper nesting, ie: if someone write
> "<b>some text <i>without closing tags"
> and if my script have order like
> if($b_open > $b_close)
> if($i_open > $i_close)
> if($a_open > $a_close)
>
> I will have unproper nesting:
> "<b>some text <i>without closing tags </b> </i>"
>
> Is there some method to "see" which tag should came first?

Don't use flags. They won't be of any use if tags of the same type are
nested (e.g., "<b><b>...</b>").

Instead, use a stack to keep a record of which tags are open.

These functions should help:
<http://php.net/array_push>
<http://php.net/array_pop>

--
phil [dot] ronan @ virgin [dot] net
http://vzone.virgin.net/phil.ronan/

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