CREATE TABLE table_33851 ("Week" FLOAT, "Date" CLOB, "Opponent" CLOB, "Result" CLOB, "Attendance" CLOB)

Opponent of Philadelphia eagles had what attendance?
SELECT "Attendance" FROM table_33851 WHERE "Opponent" = 'philadelphia eagles'
SELECT "Attendance" FROM "table_33851" WHERE "Opponent" = 'philadelphia eagles'