I'm trying to test sqlSQL injection vulnerability inon a site (PhpPHP,Uses Mysql uses MySQL Database). When iI put an apostrophe in the username field and write noleave the password box blank,after after submitting, the form reloads and the fields become empty again.but But when iI used an apostrophe in the password field,the the message says Invalid"Invalid Username/passwordpassword".What
What does that indicate?And And if iI put admin' as username (don't add comments) and in the password field, write ';Drop Table users;;Drop Table users; (don't add comment) are my comments gonna work?