How to install GD Extension on EC2

If you're using Amazon EC2 with Amazon Linux AMI, you my find GD Extension is not installed by default. The following are steps to get it installed.

• check if PHP GD is installed or not by 'rpm -qa | grep php', if you see 'php-gd-5.3.8-3.20.amzn1.i686" or similar, then you are fine and can stop here.
• If not, then run command, 'sudo yum install php-gd'
• And restrat apache by 'sudo /etc/init.d/httpd restart'
Cheer!

Set Magic Quotes Runtime is deprecated

I see a lot of error in logs regarding set magic quotes runtime is deprecated on one of my wordpress site running the nginx server. The error is like the following,

2011/11/07 12:02:48 [error] 15798#0: *130087 FastCGI sent in stderr: \"PHP Deprecated:  Function set_magic_quotes_runtime() is deprecated in /var/www/example/content/wp-settings.php on line 32\" while reading response header from upstream, client: 173.13.114.113, server: www.example.com, request: \"GET /news/ HTTP/1.1\", upstream: \"fastcgi://unix:/var/run/www/php.sock:\", host: \"www.example.com\", referrer: \"http://www.example.com/\"

I already turn off Deprecated error in php.ini, but Not sure why it does not stop. The bad thing is that a lot of deprecated errors make the important error message hidden, so I got the fix this. Finally, the solution is edit wp-settings.php on line 32 to

//set_magic_quotes_runtime( 0 );
//110711 - Since this function is depracted as of PHP 5.3, use ini_set('magic_quotes_runtime', 0); instead.
@ini_set( 'magic_quotes_runtime', 0);

Ref: http://php.net/manual/en/function.set-magic-quotes-runtime.php

How to disable autosave and wp post revisions

Just a short note.

define('WP_POST_REVISIONS', false);

function disable_autosave() {
wp_deregister_script('autosave');
}
add_action( 'wp_print_scripts', 'disable_autosave' );