Just giving you some options

SELECT * FROM gallery2 WHERE topic_id="48177" UNION SELECT * FROM gallery2 WHERE topic_id="716759" UNION SELECT * FROM gallery2 WHERE topic_id="1751280" UNION SELECT * FROM gallery2 WHERE topic_id="24214" UNION SELECT * FROM gallery2 WHERE topic_id="1138657" UNION SELECT * FROM gallery2 WHERE topic_id="1487838" UNION SELECT * FROM gallery2 WHERE topic_id="841134" UNION SELECT * FROM gallery2 WHERE topic_id="1547012" UNION SELECT * FROM gallery2 WHERE topic_id="1061659" UNION SELECT * FROM gallery2 WHERE topic_id="449827" UNION SELECT * FROM gallery2 WHERE topic_id="28560" UNION SELECT * FROM gallery2 WHERE topic_id="635051" UNION SELECT * FROM gallery2 WHERE topic_id="1174175" UNION SELECT * FROM gallery2 WHERE topic_id="1464356" UNION SELECT * FROM gallery2 WHERE topic_id="806324" UNION SELECT * FROM gallery2 WHERE topic_id="683111"