PHP警告mysql_get_server_info（）：对用户'www-data'@'localhost拒绝访问

Question

I was printing the mysql_get_server_info() using like this:

<?php 
   echo 'MySQL Informtion';
   echo mysql_get_server_info();
?>

but got

PHP warning mysql_get_server_info(): Access denied for user 'www-data'@'localhost (using password: NO)

in response. I am using PHP5.6. what causing this and how do i fix it.

Answer 1

From the documentation:

link_identifier: The MySQL connection. If the link identifier is not specified, the last link opened by mysql_connect() is assumed. If no such link is found, it will try to create one as if mysql_connect() was called with no arguments. If no connection is found or established, an E_WARNING level error is generated.

To fix it, you need to run mysql_connect (with the correct username, password, etc.) before you call mysql_get_server_info.