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WordPress function: Get category ID using category name

Jean-Baptiste Jung — Thu, 29 Jul 2010 15:46:09 +0000

As usual, let's start by pasting the function in your functions.php file:

function get_category_id($cat_name){
	$term = get_term_by('name', $cat_name, 'category');
	return $term->term_id;
}

Once you saved the file, just call the function with your category name as a parameter. Example:

$category_ID = get_category_id('WordPress Tutorials');

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WordPress function: Get category ID using category name

How to display your average feed readers

Jean-Baptiste Jung — Fri, 23 Jul 2010 09:23:12 +0000

As usual, the first thing to do is to paste the function in your functions.php file:

function get_average_readers($feed_id,$interval = 7){ $today = date('Y-m-d', strtotime("now")); $ago = date('Y-m-d', strtotime("-".$interval." days")); $feed_url="https://feedburner.google.com/api/awareness/1.0/GetFeedData?uri=".$feed_id."&dates=".$ago.",".$today; $ch = curl_init(); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_URL, $feed_url); $data = curl_exec($ch); curl_close($ch); $xml = new SimpleXMLElement($data); $fb = $xml->feed->entry['circulation']; $nb = 0; foreach($xml->feed->children() as $circ){ $nb += $circ['circulation']; } return round($nb/$interval); }

Once done, you can call the function wherever you want in your theme files. Pass your Feedburner feed id as a parameter:

Code initially published on Cats Who Blog.

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How to display your average feed readers

Add categories or tags to post programatically

Jean-Baptiste Jung — Mon, 19 Jul 2010 06:57:01 +0000

The first thing to do is to create an array of categories id. Once done, you simply have to use the wp_set_object() function, which take 3 parameters: The post id, an array of categories to add to the post, and the taxonomy type (category in this example).

$category_ids = array(4, 5, 6); wp_set_object_terms( $post_id, $category_ids, 'category');

Adding tags to a post is extremely easy as well. The only difference with the code to add categories is the taxonomy "post_tag" instead of "category".

$tag_ids = array(7, 8, 9); wp_set_object_terms( $post_id, $tag_ids, 'post_tag');

Thanks to WPProgrammer for this very cool snippet.

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Add categories or tags to post programatically

Display dates as “time ago”, the easy way

Jean-Baptiste Jung — Mon, 05 Jul 2010 04:26:41 +0000

To display human readable dates on your blog, you have to use the human_time_diff() function. The following piece of code will show a post date like "Posted 6 days ago".
Paste it anywhere within the loop, save the file, and you're done.

Posted

Credits: PHP Snippets.

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Display dates as “time ago”, the easy way

How to programatically remove WordPress dashboard widgets

Jean-Baptiste Jung — Wed, 23 Jun 2010 10:35:30 +0000

Simply paste the following into your functions.php file. The code will remove all dashboard widgets, so you should comment lines related to wigets you'd like to keep.

function remove_dashboard_widgets() { global $wp_meta_boxes; unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_quick_press']); unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_incoming_links']); unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_right_now']); unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_plugins']); unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_recent_drafts']); unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_recent_comments']); unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_primary']); unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_secondary']); } if (!current_user_can('manage_options')) { add_action('wp_dashboard_setup', 'remove_dashboard_widgets' ); }

Thanks to NoScope for this code!

By the way, did you had a look to my latest post on CatsWhoCode about WP 3.0 custom post types?

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How to programatically remove WordPress dashboard widgets

How to automatically create a custom field when a post is published

Jean-Baptiste Jung — Tue, 15 Jun 2010 09:56:34 +0000

Paste the code below into your functions.php file. The only thing you have to do is to edit the cutsom field name on line 6.
add_action('publish_page', 'add_custom_field_automatically'); add_action('publish_post', 'add_custom_field_automatically'); function add_custom_field_automatically($post_ID) { global $wpdb; if(!wp_is_post_revision($post_ID)) { add_post_meta($post_ID, 'field-name', 'custom value', true); } }

Thanks to wpCanyon for this cool tip!

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How to automatically create a custom field when a post is published

WordPress hack: Display post thumbnail in your RSS feed

Jean-Baptiste Jung — Fri, 11 Jun 2010 09:36:34 +0000

Simply paste the following code in your functions.php file. The post thumbnail should be visible once you saved the file.

function diw_post_thumbnail_feeds($content) { global $post; if(has_post_thumbnail($post->ID)) { $content = '
' . get_the_post_thumbnail($post->ID) . '
' . $content; } return $content; } add_filter('the_excerpt_rss', 'diw_post_thumbnail_feeds'); add_filter('the_content_feed', 'diw_post_thumbnail_feeds');

Thanks to Jeff Starr for this great tip!

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WordPress hack: Display post thumbnail in your RSS feed

WordPress hack: Remove admin name in comments class

Jean-Baptiste Jung — Mon, 24 May 2010 05:50:39 +0000

This code simply have to be pasted in your functions.php file to work:

function remove_comment_author_class( $classes ) { foreach( $classes as $key => $class ) { if(strstr($class, "comment-author-")) { unset( $classes[$key] ); } } return $classes; } add_filter( 'comment_class' , 'remove_comment_author_class' );

Thanks to C. Bavota for this interesting piece of code!

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WordPress hack: Remove admin name in comments class

WordPress tip: Automatically empty Trash

Jean-Baptiste Jung — Thu, 20 May 2010 06:17:46 +0000

Simply open your wp-config.php file (located at the root of your WOrdPress install) and paste the following code:

define('EMPTY_TRASH_DAYS', 10 );

The second parameter is when to empty trash, in days.

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WordPress tip: Automatically empty Trash

WordPress hack: Insert comments programatically

Jean-Baptiste Jung — Mon, 17 May 2010 05:55:33 +0000

The following code can be pasted anywhere on your theme files.
Once this code is executed, it will add a new comment into WordPress database. The returned value is the comment ID, or 0 if a problem happenned.

$data = array( 'comment_post_ID' => 1, 'comment_author' => 'admin', 'comment_author_email' => 'admin@admin.com', 'comment_author_url' => 'http://www.catswhocode.com', 'comment_content' => 'Lorem ipsum dolor sit amet...', 'comment_author_IP' => '127.0.0.1', 'comment_agent' => 'Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; fr; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3', 'comment_date' => date('Y-m-d H:i:s'), 'comment_date_gmt' => date('Y-m-d H:i:s'), 'comment_approved' => 1, ); $comment_id = wp_insert_comment($data);

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WordPress hack: Insert comments programatically