Removing .svn folders recursively

The easiest way I have found is to open the Terminal and remove a listing of the folders:

cd /Users/YourUserName/TheFolderWhereSVNFilesAre
rm -rf `find . -type d -name .svn`

NOTE: Make sure that you user the grave accent quote (located on the left of the number 1 key)

Truncate WordPress post content

$post_content = $post->post_content; // get the content
$post_content = strip_tags($post_content); // remove HTML tags
$post_content = preg_replace('/\[(.*)\]/', '', $post_content);  // remove shortcodes
$post_content = substr($post_content, 0, 30);
echo $post_content;

Supporting multiple databases in wordpress

I recently had the need of making changes to my website but I didn’t want to have those changes live until I have tested in my local environment.

Downloading the remote files and running a local server is pretty trivial. Making a backup of the remote database can be accomplished using phpMyAdmin or you can use any WordPress backup plugin (I personally like WP-DB-Backup)

The part that is annoying (at least in my case), is that I used CPanel+Fantastico to automatically create an instance of WordPress in my server. The issue is that the database credentials (name, username, password) are generated with some weird values. In my local copy I have to modify the wp-config.php file to add the credentials to connect to my local database. The problem with this is that I always have to remember not to upload the wp-config.php to the live server to prevent taking my own site down.

I figured that I should probably modify the wp-config.php in a way that will work in my local environment as well as the remote server. Here is a quick way to support multiple databases in WordPress by modifying the wp-config.php:

if(preg_match('/localhost:8888/', $_SERVER["HTTP_HOST"])){ 
	// local environment
	define('DB_NAME', 'local_db');
	define('DB_USER', 'root');
	define('DB_PASSWORD', 'root');
	define('DB_HOST', 'localhost:8889');
	// remote environment
	define('DB_NAME', 'remote_db');
	define('DB_USER', 'remote_user_name');
	define('DB_PASSWORD', 'remote_user_password');
	define('DB_HOST', 'localhost');

Associating images to a post or a page

In the version 2.9 WordPress introduced the capability of associating images to a post or a page. When you create your theme you can turn on this feature by simply adding a call to add_theme_support('post-thumbnails') in your functions.php (this file should be located inside you theme folder).

if ( function_exists( 'add_theme_support') ) {
	add_theme_support( 'post-thumbnails' );
	add_image_size( 'image-normal', 96, 9999, false );
	add_image_size( 'image-small', 32, 9999, false );

Believe it or not you are ready to go. Once you add this feature, the next time that you are creating or editing a post in the WordPress admin area, you will be presented with the option to add a Feature Image to your post. This will allow you to upload and associate an image to your post.

To show the image in your page you can simply call the_post_thumbnail($feature). Here is an example:

	$posts = get_posts();
	foreach ($posts as $post){
			<p id="<?=the_ID();?>"><?=the_title();?></p>
			<?php the_post_thumbnail('image-small');
			<h1 id="<?=the_ID();?>"><?=the_title();?></h1>
			<?php the_post_thumbnail('image-normal');


Add Theme Support
Add Image Size
The Post Thumbnail

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