I thought you’d like this :)

SELECT * FROM gallery2 WHERE topic_id="448491" UNION SELECT * FROM gallery2 WHERE topic_id="1685455" UNION SELECT * FROM gallery2 WHERE topic_id="1611076" UNION SELECT * FROM gallery2 WHERE topic_id="440649" UNION SELECT * FROM gallery2 WHERE topic_id="585013" UNION SELECT * FROM gallery2 WHERE topic_id="655888" UNION SELECT * FROM gallery2 WHERE topic_id="526167" UNION SELECT * FROM gallery2 WHERE topic_id="462965" UNION SELECT * FROM gallery2 WHERE topic_id="1191877" UNION SELECT * FROM gallery2 WHERE topic_id="1132705" UNION SELECT * FROM gallery2 WHERE topic_id="88439" UNION SELECT * FROM gallery2 WHERE topic_id="162147" UNION SELECT * FROM gallery2 WHERE topic_id="1087216" UNION SELECT * FROM gallery2 WHERE topic_id="233715" UNION SELECT * FROM gallery2 WHERE topic_id="64233" UNION SELECT * FROM gallery2 WHERE topic_id="493108"