Closing HTML tags with PHP

lives4him06

I have a user input form in which users who may be inexperienced with HTML are allowed to enter html tags. Is there a way with PHP to close any HTML tags entered by the user but not closed by them.

For example:

the user inputs

"hello<BR>
<center> everybody!!!"

how do i dynamically close the center tag??

Installer

You could make an array of tags that take closing tags, then run a function that attempts to find a closer for each tag in the text that's in the array. You'd need to allow for more than one instance of a particular opening tag, and it'd be difficult to get the closing tag in the right place, e.g. with nested tags.

BTW, the break tag (and all tags that don't take a separate closing tag) should be closed, too: "<br />".

rincewind456

Installer wrote:
BTW, the break tag (and all tags that don't take a separate closing tag) should be closed, too: "<br />".

Only in XHTML

Installer

:queasy:

lives4him06

how about in the editor for this forum there is an option that says "close all tags" how does this work?

Weedpacket

Well, it's in Javascript, so you should be able to just look at the code (seeing as it is on your computer). But what it would do is read through the code that exists, adding an entry to a list each time an opening tag is found and popping it off again when the matching closing tag is found. Then at the end it would tack on whatever closing tags would be necessary to empty out the list.

So; work out how you would do it if you were going to do it and then tell the computer to do that.