WordPress Cheatsheet

Below you will find snippets to help you through developing a wordpress template, hope it helps :)

get the home URL

<?php echo get_option('home'); ?>

display the blog description

<?php bloginfo('description'); ?>

display the blog name

<?php bloginfo('name'); ?>

get the home URL for template's directory

<?php bloginfo('template_directory') ?>

display the page list in descending order withour title

<?php wp_list_pages('sort_order=desc&title_li='); ?>

display the list of blogrolls

<?php wp_list_bookmarks(); ?>

within a loop

title of post

<?php the_title(); ?>

the text "read more" will not show up

<?php the_content(''); ?>

dispaly the tags of the post

<?php the_tags('', ' . ', ''); ?>

display the time of the current post

<?php the_time('F jS, Y') ?>

display the numeric ID of the current post

<?php the_ID(); ?>

display a link to them comment

<?php comments_popup_link('No Comments', '1 Comment', '% Comments'); ?>

display the author's name of the post

<?php the_author() ?>

display the unique numeric user ID for the author of a post

<?php the_author_ID()?>

display the commentor avatar in a size of 80px X 80px

<?php echo get_avatar( $comment, 80 ); ?>

display the comment content

<?php comment_text() ?>

display the URL for the permalink of the post currently being processed

<?php the_permalink() ?>

Paganavigation

display a link to the previous post with an anchor text as "Previous Post"

<?php previous_post_link('%link', 'Previous Post') ?>

display a link to the next post with an anchor text as "Next Post"

<?php next_post_link('%link', 'Next Post') ?>

display a link to the previous page with an anchor text as "Previous Page"

<?php posts_nav_link('','','« Previous Entries') ?>

display a link to the next page with an anchor text as "Next Page"

<?php posts_nav_link('','Next Entries »','') ?>

display a link to the previous image within the gallery

<?php previous_image_link() ?>

display a link to the previous image within the gallery

<?php next_image_link() ?>

file linking

load header.php

<?php get_header(); ?>

load sidebar.php

<?php get_sidebar(); ?>

load footer.php

<?php get_footer(); ?>

goes in footer.php

<?php wp_footer(); ?>

goes in header.php

<?php wp_head(); ?>

load comments.php

<?php comments_template(); ?>

load searchform.php

<?php include (TEMPLATEPATH . '/searchform.php'); ?>

load about.php

<?php include('about.php'); ?>

load featured-post.php

<?php include('featured-post.php'); ?>

widgetize sidebar

<?php if ( !function_exists('dynamic_sidebar') || !dynamic_sidebar('sidebar2') ) : ?>

if it is a widgetize sidebar, defince this as sidebar 2

<?php endif; ?>

define the page template name in admin panel

<?php /* Template Name: Links */ ?>

normal post loop

Start loop

<?php if (have_posts()) : while (have_posts()) : the_post(); ?>

a normal posts loop, the contents go here 

<?php endwhile; else: ?>

<?php endif; ?>

query post loop

Start loop

<?php $query_string = ...

<?php query_posts($query_string); while (have_posts()) : the_post(); ?>

the contents go here

<?php endwhile; ?>

comment loop

start the comments loop

<?php foreach ($comments as $comment) : ?>

the contents go here

<?php endforeach; ?>
end comments loop

use of custom fields

start the loop

<?php while (have_posts()) : the_post(); ?>

define the custom field key for the post being processed in the loop with the ID

<?php $photo = get_post_meta($post->ID, "myphoto", TRUE); ?>

display the custom field value

<?php echo $mydesc; ?>

<?php endwhile; ?>

Custom Post Types

Create Custom Post type

function codex_custom_init() {
  $labels = array(
    'name' => 'Books',
    'singular_name' => 'Book',
    'add_new' => 'Add New',
    'add_new_item' => 'Add New Book',
    'edit_item' => 'Edit Book',
    'new_item' => 'New Book',
    'all_items' => 'All Books',
    'view_item' => 'View Book',
    'search_items' => 'Search Books',
    'not_found' =>  'No books found',
    'not_found_in_trash' => 'No books found in Trash', 
    'parent_item_colon' => '',
    'menu_name' => 'Books'
  );

  $args = array(
    'labels' => $labels,
    'public' => true,
    'publicly_queryable' => true,
    'show_ui' => true, 
    'show_in_menu' => true, 
    'query_var' => true,
    'rewrite' => array( 'slug' => 'book' ),
    'capability_type' => 'post',
    'has_archive' => true, 
    'hierarchical' => false,
    'menu_position' => null,
    'supports' => array( 'title', 'editor', 'author', 'thumbnail', 'excerpt', 'comments' )
  ); 

  register_post_type( 'book', $args );
}
add_action( 'init', 'codex_custom_init' );

Santize HTML Inputs

<?php
$sanitized_email = sanitize_email('éric@loremipsum.com!');
print $sanitized_email; // will output:'ric@loremipsum.com'
?>

<?php
// If you want to explicitly style a post, you can use the sanitized version of the post title as a class
$post_class = sanitize_html_class( $post->post_title );
echo '<div class="' . esc_attr( $post_class ) . '">';

<?php sanitize_title( $title, $fallback_title, $context ) ?>

<?php
  $new_url = sanitize_title('This Long Title is what My Post or Page might be');
  echo $new_url; // this-long-title-is-what-my-post-or-page-might-be
?>