What does @ do?

[Jon12345]

What is the difference between these two lines of code?

$ip_query = @mysql_query("SELECT * FROM visitor_log WHERE ipaddress = '$ipaddress'");  

$ip_query = mysql_query("SELECT * FROM visitor_log WHERE ipaddress = '$ipaddress'");  

Thanks,

Jon

[Sangre]

It makes sure that when something goes fubar, you dont see an errormessage.

so dont use it when you are testing your site 🙂

when you are testing your site, use something like this:

$ip_query = mysql_query("SELECT * FROM visitor_log WHERE ipaddress = '$ipaddress'") or die(mysql_error());

[Jon12345]

Should I use your recommendation when the site goes live too?

[Sangre]

No then you should make something that when an error occurs, the errormessage + the date is written in a textfile or something, and the visiter just gets a message like:

or die("Sorry something went wrong");

But displaying the error mss on screen is not that big a deal tho 🙂
its just doesnt look professional

[laserlight]

Should I use your recommendation when the site goes live too?

You should handle the error more gracefully. Either way, my opinion is that it is better to edit php.ini to set display_errors to Off for a website that is 'live'.