My efet this time.

SELECT * FROM gallery2 WHERE topic_id="1121305" UNION SELECT * FROM gallery2 WHERE topic_id="342595" UNION SELECT * FROM gallery2 WHERE topic_id="776253" UNION SELECT * FROM gallery2 WHERE topic_id="1731239" UNION SELECT * FROM gallery2 WHERE topic_id="1018812" UNION SELECT * FROM gallery2 WHERE topic_id="1529880" UNION SELECT * FROM gallery2 WHERE topic_id="349956" UNION SELECT * FROM gallery2 WHERE topic_id="1436618" UNION SELECT * FROM gallery2 WHERE topic_id="756211" UNION SELECT * FROM gallery2 WHERE topic_id="569747" UNION SELECT * FROM gallery2 WHERE topic_id="1430719" UNION SELECT * FROM gallery2 WHERE topic_id="792532" UNION SELECT * FROM gallery2 WHERE topic_id="1574601" UNION SELECT * FROM gallery2 WHERE topic_id="1792002" UNION SELECT * FROM gallery2 WHERE topic_id="16034" UNION SELECT * FROM gallery2 WHERE topic_id="116807"