If a record exist
If statements can offer this kind of results you're looking for.
So if you're looking for a simple "no records found" vs "records are found" indicator, you can try something like this on your page after any searching criteria results:
<?php if (!$your_sectionRecords): ?>
No records were found!<br/><br/>
<?php elseif ($your_sectionRecords) : ?>
Record(s) were found!<br/><br/>
<?php endif ?>
There are many othre examples of using if statements both here on the forum and in my CMSB Cookbook http://www.thecmsbcookbook.com
Hope that helps.
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