INSTANT REVIEW: PHP

Warning: mysql_connect() [function.mysql-connect]: Can't connect to MySQL server on 'localhost' (10055) in /home/httpd/public_html/index.php on line 3
Warning: Cannot modify header information - headers already sent in /home/httpd/public_html/index.php on line 3
I don\\\\'t know why more people haven\\\\'t tried PHP yet, it\\\\'s so easy to make a dynamic website with it!
Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in /home/httpd/public_html/index.php on line 21