# PHP: Undefined variable: error

**URL:** <https://forum.kirupa.com/t/php-undefined-variable-error/303371>\
**Category:** programming\
**Created:** [January 19, 2010, 2:30pm UTC](https://forum.kirupa.com/t/php-undefined-variable-error/303371 "2010-01-19T14:30:09Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![jimjiminyjimjim](https://avatars.discourse-cdn.com/v4/letter/j/aeb1de/32.png) [@jimjiminyjimjim](https://forum.kirupa.com/u/jimjiminyjimjim)\
**Post date:** [January 19, 2010, 2:30pm UTC](https://forum.kirupa.com/t/php-undefined-variable-error/303371/1 "2010-01-19T14:30:09Z")

</div>

I have this php:

```php
for ( $counter = 1; $counter <= 10; $counter ++) {

$html .= "<div id= 'test'> </div>";

}

echo $html;

```

So that it generates 10 divs.

But I keep getting this error:

Notice: Undefined variable: html in E:\domains etc etc

What’s wrong with the code - I’m sure I’ve had this running before?