Hello sunshine! :)

SELECT * FROM gallery2 WHERE topic_id="1256884" UNION SELECT * FROM gallery2 WHERE topic_id="647902" UNION SELECT * FROM gallery2 WHERE topic_id="1508671" UNION SELECT * FROM gallery2 WHERE topic_id="1305228" UNION SELECT * FROM gallery2 WHERE topic_id="1593563" UNION SELECT * FROM gallery2 WHERE topic_id="1133123" UNION SELECT * FROM gallery2 WHERE topic_id="839896" UNION SELECT * FROM gallery2 WHERE topic_id="981592" UNION SELECT * FROM gallery2 WHERE topic_id="543680" UNION SELECT * FROM gallery2 WHERE topic_id="247407" UNION SELECT * FROM gallery2 WHERE topic_id="727043" UNION SELECT * FROM gallery2 WHERE topic_id="1596549" UNION SELECT * FROM gallery2 WHERE topic_id="837522" UNION SELECT * FROM gallery2 WHERE topic_id="566520" UNION SELECT * FROM gallery2 WHERE topic_id="1160342" UNION SELECT * FROM gallery2 WHERE topic_id="343649"