What should I do if filtering rules cannot be added to the keywords field during Dreamweaver CMS collection?

#What should I do if filtering rules cannot be added to the keywords field during DreamWeaver CMS collection?

Some friends reported that when writing collection rules, keywords need to be eliminated, and using

{dede:trim replace=''}(.*){/dede:trim}

filtering rules is invalid. After checking it, the solution is attached:

Modify include/dedecollection.class.php, line 717:

Recommended learning: Dream Weaver cms

The code is as follows:

$keywords = preg_replace("#".$this->artNotes['keywordtrim']."#isU",'',$keywords);

is:

[code] 
$keywords = preg_replace("/".$this->artNotes['keywordtrim']."/isU",'',$keywords); 
[html]

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