On volume pass single quote in parameter. Now your query is
SELECT * FROM cp WHERE year="1911" AND quarter="4" AND volume="2a" AND page <= '1475' ORDER BY page DESC LIMIT 1 Try this code
On volume pass single quote in parameter. Now your query is
SELECT * FROM cp WHERE year="1911" AND quarter="4" AND volume="2a" AND page <= '1475' ORDER BY page DESC LIMIT 1 Try this code