To add class to wordpress wysiwyg editor copy this php code to your theme function.php file

if ( ! function_exists('tdav_css') ) {
	function tdav_css($wp) {
		$wp .= ',' .get_bloginfo('stylesheet_directory') . '/style_css.css';
	return $wp;
	}
}
add_filter( 'mce_css', 'tdav_css' );

Here you add new style file. In this file create your new css classes. Now go to wysiwyg editor and there you will see your created classes. Use them for table or links. 🙂

Sometimes we need to get depth of posts or pages in wordpress. Now you can do it easy with function

function getDepth($id = '', $depth = '', $i = 0)
{
 global $wpdb;
 global $post;
 if($depth == '')
 {
 if(is_page())
 {
 if($id == '')
 {
 $id = $post->ID;
 }
 $depth = $wpdb->get_var("SELECT post_parent FROM $wpdb->posts WHERE ID = '".$id."'");
 return getDepth($id, $depth, $i);
 }
 }
 elseif($depth == "0")
 {
 return $i;
 }
 else
 {
 $depth = $wpdb->get_var("SELECT post_parent FROM $wpdb->posts WHERE ID = '".$depth."'");
 $i++;
 return getDepth($id, $depth, $i);
 }
}

Copy function getDepth() in your function.php file. Call it from your template, for example <?php echo getDepth($post_ID);?>

and it will return your post depth in your site.

Try, I hope it will help you.

Sometimes it happens that working with WordPress, we need to get children off current page. There is a fairly simple decision to do this. We can use the WordPress function get_pages (). Here is the code example of how this can be done.

<? $pages = get_pages('child_of='.$post->ID.'&sort_column=post_title');
		?>
		<ul><?
		foreach($pages as $page)
		{ ?>
			<li class="page_item"><a href="<?php echo get_page_link($page->ID) ?>"><?php echo $page->post_title ?></a></li>
		<?php
		}
?></ul>

In this example we get page title and page link.

Creating, editing and deleting the user account is an important thing in any CMS. We can easily manage user in wordpress sites too. There are a lot of plugins which helps us create User profile and manage there profile.

But in wordpress deleting User from wordpress is not easy. Here in this article we will show how can we easily delete the user account without administrator permission.

Using following wordpress plugin we can achieve this functionality.

User Self Delete

This plugin will allow your users to delete their own account without any need for interaction on the administrator’s behalf.

When user want to delete their account, they are taken to page where they must enter the word “yes” . Once they type “yes” and press the delete account button, they are redirected to the login page and they no longer exist as a user in site.

If you are making the wordpress plugin, many times we need to create new tables. You will see how easily we can create the wordpress plugin with new table in database.
Using following code:

global $my_db_version;
$my_db_version = "1.0";
function my_install () {
global $wpdb;
global $my_db_version;
$table_name = $wpdb->prefix . "liveshoutbox";
if($wpdb->get_var("show tables like '$table_name'") != $table_name) {
$sql = "CREATE TABLE " . $table_name . " (
id mediumint(9) NOT NULL AUTO_INCREMENT,
name tinytext NOT NULL,
UNIQUE KEY id (id)
);";
require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
dbDelta($sql);
$rows_affected = $wpdb->insert( $table_name, array('name' => $welcome_name) );
add_option("my_db_version", $my_db_version);
}
}

Now that we have the initialization function defined, we want to make sure that WordPress calls this function when the plugin is activated by a WordPress administrator. To do that, we will use the activate_ action hook. If your plugin file is wp-content/plugins/plugindir/pluginfile.php, you’ll add the following line to the main body of your plugin:

register_activation_hook(__FILE__,'my_install');