Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

The [ url ] tags no longer function properly: instead of turning a word into a link, it makes the word disappear completely. For example, see this post: http://www.mathisfunforum.com/viewtopic.php?id=24999

I have entered this:

```
Hi,
You might find this link useful: [url=https://www.mathsisfun.com/algebra/polynomials-multiplying.html]https://www.mathsisfun.com/algebra/polynomials-multiplying.html[/url]
```

But the output has been this:

```
Hi,
You might find this link useful:
```

Can we fix this? Any links appearing in any other post have also retroactively disappeared (take a look at this thread, for example: http://www.mathisfunforum.com/viewtopic.php?id=22506 ).

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,710

Will have a look

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

Offline

**Bob****Administrator**- Registered: 2010-06-20
- Posts: 9,208

Eeek! Seems to be worse than that. I've checked out a few of my posts and not only have the urls gone but also the imgur links to images.

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Sometimes I deliberately make mistakes, just to test you! …………….Bob

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,710

A function that used to work in PHP called 'create_function()' has been removed as it is a potential security risk. The forum uses that function to handle url tags and image tags.

I have found a work-around for the url tags, which seem to be working now. Yay.

Next I need to find a way to handle the image tags.

Life in a changing world.

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

Offline

**Bob****Administrator**- Registered: 2010-06-20
- Posts: 9,208

hi MathsIsFun

I've checked again and I'm seeing images again now. Thanks.

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Sometimes I deliberately make mistakes, just to test you! …………….Bob

Offline