Strange error

[abou.hmed]

hello
i have a very strange error in my website
suddenly the website start to ask me for a username and password (not from code)each time i try to access any file
the website is www.ukadm.com/main.php
please if any one have any idea just tell me what to do .
thank you

[NogDog]

It's not PHP that's doing it, but the web server. Looks like HTTP authentication has been turned on for your site. Check your site control panel for something like "password control" or such, or check the main site directory to see if there is a .htaccess file with commands starting with "Auth..." in it.

[NogDog]

PS: I should amend my reply to state that it is possible for PHP scripts to implement such HTTP authentication, but unless you explicitly did so or installed some PHP script that someone else wrote and uses such authentication, it's more likely to be a site configuration issue.