array in and out

Since i have little experience with arrays, and the manuals / readme files online havent been able to help me, I was wondering if anyone had any ideas why this code doesnt work? // get the keywords from db $keyquery = ("select fld_keyword_word from tbl_keyword order by rand()"); $keyresult = mysql_query($keyquery) or die ("couldnt randomize words"); // put them into an array while ($keyrow = mysql_fetch_array($keyresult)) { $keyword[] = '$keyrow["fld_keyword_word"]'; } // print the keywords with a function $mykeywords = implode(", ", $keyword); function print_keywords() { echo ($mykewords); }