WordPress | PHP - Hypertext Preprocessor

Standards Based Development

WordPress Codebase Notes

WordPress Documents

home.php

home.php is a template used for main page (on is_home()) condition.

index.php

index.php is universal template, it is what any page (home, archive, single post, etc) will use if no other template is available for it.

Template Files

style.css
The main stylesheet. This defines the style of the theme.
index.php
The main template.Which defines the layout.
comments.php
The comments template defined in the theme. If not present, comments.php from the “default” Theme is used.
home.php
The home page template.
single.php
The single post template. Used when a single post is queried. For this and all other query templates, index.php is used if the query template is not present.
page.php
The page template.
archive.php
The archive template. Note that this template will be overridden by category.php, author.php, and date.php for their respective query types.
search.php
The search results template. Used when a search is performed.
404.php
The 404 Not Found template. Used when WordPress cannot find a post or page that matches the query.

Common Functions

get_header()
includes the header.php file content which is in the current theme. If that file is not found, it will instead include default header.php
get_footer()
includes the footer.php file content which is in the current theme. If that file is not found, it will instead include default footer.php
get_sidebar()
includes the sidebar.php file content which is in the current theme. If that file is not found, it will instead include default side bar.php
comments_template()
includes the comments.php file content which is in the current theme. If that file is not found, it will instead include default comments.php

Code Examples

The Loop aka Displaying Posts (have_posts())


<?php  
if   (have_posts()) : 
  while  (have_posts()) :        // The Main Loop  
    the_post();          // Required   Call 
    the_content();    // Get Content  
  endwhile ; 
endif;  
?>
<>

header.php


<!DOCTYPE html PUBLIC "-/ /W3 C/ /D TD  XHTM L  1 .0  Transitio nal// EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml" <?php   language_attributes();  ?> >  
<head profile="http://gmpg.org/xfn/11">  
  <meta http -equiv="Content-Type" content=" <?php  bloginfo( 'html_type' );  ?> ;   c h a r s et= <?php 
bloginfo(' charset '); ?> " / >  
  <title> <?php  bloginfo(' name'); ?>   <?php   w p _ ti tl e ( ) ;  ?> </title>  
 
  <link rel="stylesheet" href="<?php  bloginfo( 'stylesheet_url');  ?> " type="text/css" media="screen" />  
  <link rel="alternate" type="application/rss+xml" title="RSS 2.0" href="<?php   bloginfo( 'rss2_url' );  ?> " / >  
 
  <link rel="pingback" href=" <?php  bloginfo( 'pingback_url' );  ?> " / >  
  <?php   wp_get_archives('type=monthly&format=link' ) ;   ?>  
  <?php   comments_popup_script();  // off by default   ?>  
  <?php   wp_head(); //  API Hook   ?>  
</head> 
 
<body>

sidebar.php


<ul>  
  <?php    /* Widgetized sidebar, if you have the plugin installed. */
    if ( !function_exists( 'dynamic_sidebar' ) || !dynamic_sidebar() ) :  ?>  
  <li> 
    <?php   include (TEMPLATEPATH .  '/searchform.php');  ?>  
  </li>  
  <?php   wp_list_pages('title_li=<h2>Pages</h2>'  );  ?>  
  <?php   wp_list_bookmarks(); ?>  
  <li><h2>Archives</h2> 
    <ul>  
      <?php   wp_get_archives('type=monthly');  ?>  
    </ul> 
  </li>  
  <li><h2>Meta</h2> 
    <ul>  
      <?php   w p_m eta() ;   // API Hook   ?>  
      <?php   wp_register(); ?>  
      <li><?php  wp_loginout(); ?> < / l i >  
    </ul> 
  </li>  
  <?php   endif;  ?>  
</ul>

comments.php


<?php   if ($comments) :  ?>  
  <h3 id="comments"> <?php  comments_number( 'No Responses',  'One Response',  '% Responses'  ); ?>   to  
<?php  the_title();  ?> </ h3 > 
  <ol > 
  <?php   foreach ($comments as $comment) :  //  The Comments Loop ?>  
    <li id="comment -<?php  comment_ID()  ?> "> 
      <?php   echo   g et_av atar( $ comment, 3 2  );   ?>  
        <cite><?php  comment_author_link()  ?> </ cite >   Say s: 
      <?php   if  ($comment ->comment_approved == '0') : ?>  
        <em>Your comment is awaiting moderation.</em>  
      <?php   endif;  ?>  
      <a href="#comment-<?php  comment_ID()   ?> " title=""> 
        <?php   comment_date('F jS, Y') ?>  at   <?php   comment_time()  ?>  
      < / a>  
      <?php   comment_text()  ?>  
    </li>  
  <?php   endforeach; /* end for each comment */ ?>  
  </ol> 
  <?php   else : // this is displayed if there are no comments so far ?>  
  <?php   if ('open' == $post ->comment_status) :   //   comments are open, but there are no comments   ?>  
    <? php   else :  // comments are closed  ?>  
    <p class="nocomments">Comments are closed.</p> 
  <?php   endif;  ?>  
<?php   endif;  ?>

footer.php


<?php  wp_footer();   ?>
  </body>
</html>


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