hi i have a litlle problem combining results from 2 fields

i have this problem in my categories table where i have the Meta tags keys inside a field

name = category 1
keys = key1, key2. key3

i have added 2 more fields with keys to be called in different php files

name = category 1
keys = key1, key2, key3
keys2 = key4, key5, key6

so index.php calls
$meta['metaKeyWords'] = ($currentCat[0]['ckeys'];
and in source code i get
<meta name="keywords" content="key1, key2, key3" />

and index1.php calls
$meta['metaKeyWords'] = ($currentCat[0]['ckeys2']);
and in source code i get
<meta name="keywords" content="key4, key5, key6" />

but now i want to combine these 2 fields in the source code to get
<meta name="keywords" content="key1, key2, key3, key4, key5, key6 " />

i tried

$meta['metaKeyWords'] = ($currentCat[0]['ckeys']),($currentCat[0]['ckeys2']);
but it didn't work

any ideas?

    I give the suggestion I seem to give a lot here: Read up on normalization and normalize the database. Then you won't have that problem.

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