PHP code snippets from "SEO-sanitizing a WordPress theme"

Copy+paste and don't mess with the quotes, then go back to the article.
// 404.php 
<?php
@header("HTTP/1.1 404 Not found", TRUE, 404);
?>
// header.php (canonicalization)
<?php
$requestUri                = $_SERVER["REQUEST_URI"];
$uriArr                    = explode("#", $requestUri); 
$requestUriBase            = $uriArr[0];
$requestUriFragment        = $uriArr[1];
$uriArr                    = explode("?", $requestUriBase); 
$requestUriBase            = $uriArr[0];
$queryString               = $_SERVER["QUERY_STRING"];
if ( substr($requestUriBase, strlen($requestUriBase) -1, 1) != "/" ) {
    $canonicalUrl  = "http://sebastians-pamphlets.com";
    $canonicalUrl .= $requestUriBase ."/";
    if ($queryString) {
        $canonicalUrl .= "?" .$queryString;
    }    
    @header("HTTP/1.1 301 Moved Permanently", TRUE, 301);
    @header("Location: $canonicalUrl");
    exit;
}
?>
// header.php (title tag)
<?php
$pageTitle     = wp_title("",false); 
if (empty($pageTitle)) {
    $pageTitle = get_bloginfo("name"); 
}
$pageTitle     = trim($pageTitle);
print $pageTitle; 
?>
// header.php (remove archives autodiscovery in HEAD)
<?php // wp_get_archives('type=monthly&format;=link'); ?>
// use the death by pagination plugin in category-[category ID].php (category-1.php ...), category.php, archive.php and index.php
<?php 
// posts_nav_link(' — ', __('« Previous Page'), __('Next Page »'));
pager_fix();
?>
// sidebar.php (fix possibly broken search facility)
<form id="searchform" method="post" action="<?php 
            $searchUrl = get_bloginfo('url'); 
            if (substr($searchUrl, -1, 1) != "/") {
               $searchUrl .= "/";
            }
            print $searchUrl; ?>">
// that's it
Back to the WordPress-SEO tutorial