I have a list of keywords in a database field called “keywords”, that I turn into a keyword list to display on a blog as cloud type tags.

//KEYWORD TAG MANUFACURE

$keywordtags="$keywords";
$keyarray=explode(",",$keywordtags);

//print $keyarray;

foreach($keyarray as $value){
 $keytag.="<a href="#">$value</a>";
}
$keytags=$keytag;


// END KEYWORD TAG MANUFACURE

All worked well with the above code, but when I went to php 8.1 it failed.

The error message I get is..

[21-Jun-2024 15:17:44 UTC] PHP Warning:  Undefined variable $keytag in /home/user/public_html/blog.php on line 204

Any help greatly appreciated

It was working fine but upgrading t php 8.1 it then failed