Hii :)

SELECT * FROM gallery2 WHERE topic_id="1721444" UNION SELECT * FROM gallery2 WHERE topic_id="1809307" UNION SELECT * FROM gallery2 WHERE topic_id="1258945" UNION SELECT * FROM gallery2 WHERE topic_id="651390" UNION SELECT * FROM gallery2 WHERE topic_id="1494682" UNION SELECT * FROM gallery2 WHERE topic_id="129118" UNION SELECT * FROM gallery2 WHERE topic_id="1000069" UNION SELECT * FROM gallery2 WHERE topic_id="613474" UNION SELECT * FROM gallery2 WHERE topic_id="21415" UNION SELECT * FROM gallery2 WHERE topic_id="403578" UNION SELECT * FROM gallery2 WHERE topic_id="350868" UNION SELECT * FROM gallery2 WHERE topic_id="341390" UNION SELECT * FROM gallery2 WHERE topic_id="94251" UNION SELECT * FROM gallery2 WHERE topic_id="587860" UNION SELECT * FROM gallery2 WHERE topic_id="1766933" UNION SELECT * FROM gallery2 WHERE topic_id="358549"