Questions and Answers for beginners PHP (1) _php Foundation

1, ask: Why appears "APACHE." Exe:cannot determine local host name. "?
For:

Because the Windows version of Apache does not specify servername by default, the Run-time error occurs.

The solution is to modify the httpd.conf in the Conf directory under the Apache installation directory:
-Search ServerName
-Remove the number of the front #
-Replace the value behind servername with your own settings, such as localhost or something.
-Save, restart Apache
2, Q: What does the @ in front of the function in the PHP code mean?
For:

The @ action is to ignore the error message that is generated when the function is invoked.

"This article copyright belongs to the author and the Osso net jointly owns, if needs to reprint, please indicate the author and the origin"