eteubert

<?php
// initialize plugin
if ( function_exists( 'add_action' ) && function_exists( 'register_activation_hook' ) ) {
	add_action( 'plugins_loaded', array( 'tabbed_plugin', 'get_object' ) );
}

class tabbed_plugin
{
	// singleton class variable
	static private $classobj = NULL;

eteubert

<?php
function change_welcome_mail_loginlink( $welcome_email, $user_id, $password, $meta ) {
	$welcome_email = str_replace( 'LOGINLINK', 'http://www.mysite.com/my/custom/login/url', $welcome_email );
	return $welcome_email;
}
add_filter( 'update_welcome_user_email', 'change_welcome_mail_loginlink', 10, 4 );

eteubert

<?php
$some_var = 'WordPress';
$string = 'This is my text and ' . $some_var . ' is the best publishing System in the World';

eteubert

<input type="hidden" name="comments[1][content]" value="foo" />
<input type="hidden" name="comments[2][content]" value="bar" />

eteubert

<?php
class MyPlugin {
	static function activation_hook() {
		if ( ! version_compare( PHP_VERSION, '5.3.0', '>=' ) ) {
			deactivate_plugins( __FILE__ );
			wp_die( wp_sprintf( '%1s: ' . __( 'Sorry, This plugin has taken a bold step in requiring PHP 5.3.0+. Your server is currently running PHP %2s, Please bug your host to upgrade to a recent version of PHP which is less bug-prone.', 'myplugin' ), __FILE__ , PHP_VERSION ) );
		}
	}
}
register_activation_hook( __FILE__, array( 'MyPlugin', 'activation_hook' ) );

eteubert

<?php
class content_parser {	
	
	public function __construct() {
		// apply parser to all posts
		add_filter( 'the_content', array( __CLASS__, 'parse' ) );
	}
	
	public static function parse( $text ) {
		global $post;

eteubert

ericteubert: ~/Sites/wordpress-single 
➜ ack widget_text
wp-admin/includes/schema.php
307:	'widget_text' => array(),

wp-content/plugins/ikonum/class/class.custom-field-template.php
101:			add_filter('widget_text', 'do_shortcode');

wp-includes/default-widgets.php
371:		$widget_ops = array('classname' => 'widget_text', 'description' => __('Arbitrary text or HTML'));

eteubert

<?php
function enable_edit_any_user_configuration () {
	return true;
}
add_action( 'enable_edit_any_user_configuration', 'enable_edit_any_user_configuration' );

eteubert

<?php
if ( $attachment->post_parent > 0 ) {
	$link = get_permalink( $attachment->post_parent );
} else {
	$link = get_attachment_link( $attachment->ID );
}
$img  = wp_get_attachment_image( $attachment->ID );
?>
<a href="<?php echo $link ?>"><?php echo $img ?></a>

eteubert

<?php
// Alternative 1
function my_postbox_fun() {
	# code...
}
postbox( 'My Awesome Postbox', 'my_postbox_fun' );

// Alternative 2
class my_example_class
{