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adding ver 2.0.1 from http://plugins.svn.wordpress.org/canonical/tags…
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Matt Richmond
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Feb 10, 2012
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| <?php | ||
| /* | ||
| Plugin Name: Canonical URL's | ||
| Version: 2.0.1 | ||
| Plugin URI: http://yoast.com/wordpress/canonical/ | ||
| Description: Adds rel="canonical" URL's of your choice to the <head> of your posts and pages, instead of the default. | ||
| Author: Joost de Valk | ||
| Author URI: http://yoast.com/ | ||
| Revision Author: Jesse Heap | ||
| Copyright 2009-2010 Joost de Valk (email: joost@yoast.com) | ||
| This program is free software; you can redistribute it and/or modify | ||
| it under the terms of the GNU General Public License as published by | ||
| the Free Software Foundation; either version 2 of the License, or | ||
| (at your option) any later version. | ||
| This program is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| GNU General Public License for more details. | ||
| You should have received a copy of the GNU General Public License | ||
| along with this program; if not, write to the Free Software | ||
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
| */ | ||
| /* | ||
| Changelog: | ||
| 2.0.1 Only remove the default canonical when there is a cross domain one | ||
| 2.0 Removed automatic canonical on pages, and added option to canonicalize URL's | ||
| 1.0.1 Fixed double slashes on category and tag pages | ||
| 1.0 Initial version | ||
| */ | ||
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| if (!is_admin()) { | ||
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| function yoast_canonical_link() { | ||
| global $post; | ||
| $url = get_post_meta($post->ID, '_canonical', true); | ||
| if ( $url ) { | ||
| echo '<link rel="canonical" href="'.$url.'"/>'."\n"; | ||
| remove_action('wp_head','rel_canonical'); | ||
| } | ||
| } | ||
| add_action('wp_head', 'yoast_canonical_link',1); | ||
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| } else { | ||
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| function save_canonical_postdata( $post_id ) { | ||
| if (isset($_POST['canonical'])) { | ||
| $newcanonical = $_POST['canonical']; | ||
| $curcanonical = get_post_meta($post_id, '_canonical'); | ||
| if($curcanonical == "") | ||
| add_post_meta($post_id, '_canonical', $newcanonical, true); | ||
| elseif($newcanonical != $curcanonical) | ||
| update_post_meta($post_id, '_canonical', $newcanonical); | ||
| elseif($newcanonical == "") | ||
| delete_post_meta($post_id, '_canonical', $curcanonical); | ||
| } | ||
| } | ||
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| function canonical_box() { | ||
| global $post; | ||
| echo '<table class="form_table">'; | ||
| echo '<tr>'; | ||
| echo '<th width="30%"><label for="canonical">Canonical link for this page</label></th>'; | ||
| echo '<td width="70%"><input type="text" size="60" name="canonical" id="canonical" value="'.get_post_meta($post->ID, '_canonical', true).'"/></td>'; | ||
| echo '</table>'; | ||
| } | ||
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| function create_canonical_meta_box() { | ||
| if ( function_exists('add_meta_box') ) { | ||
| add_meta_box( 'canonical-box', 'Canonical', 'canonical_box', 'post', 'normal', 'high' ); | ||
| add_meta_box( 'canonical-box', 'Canonical', 'canonical_box', 'page', 'normal', 'high' ); | ||
| } | ||
| } | ||
| add_action('admin_menu', 'create_canonical_meta_box'); | ||
| add_action('save_post', 'save_canonical_postdata'); | ||
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| } | ||
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| ?> |
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| === Canonical URL's === | ||
| Contributors: joostdevalk | ||
| Donate link: http://yoast.com/donate/ | ||
| Tags: seo, canonical, search engines, google, yahoo, msn, live | ||
| Requires at least: 2.9 | ||
| Tested up to: 3.1 | ||
| stable tag: 2.0.1 | ||
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| Adds rel="canonical" URL's of your choice to the <head> of your posts and pages, instead of the default canonical link that was introduced in WordPress 2.9. | ||
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| == Description == | ||
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| Adds rel="canonical" URL's of your choice to the <head> of your posts and pages, instead of the default canonical link that was introduced in WordPress 2.9. | ||
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| More info: | ||
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| * [Canonical URL's for WordPress](http://yoast.com/wordpress/canonical/). | ||
| * Read more about how to improve your [WordPress SEO](http://yoast.com/articles/wordpress-seo/), so you can get the most out of this plugin. | ||
| * Check out the other [Wordpress plugins](http://yoast.com/wordpress/) by the same author. | ||
| * Check out the authors [Wordpress hosting](http://yoast.com/wordpress-hosting/) experiences. | ||
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| == Changelog == | ||
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| = 2.0.1 = | ||
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| * Only remove the default canonical when there is a cross domain one. | ||
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| = 2.0 = | ||
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| * Removed automatic canonical on pages, and added option to canonicalize URL's | ||
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| = 1.0.1 = | ||
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| * Fixed double slashes on category and tag pages | ||
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| = 1.0 = | ||
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| * Initial version | ||
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| == Installation == | ||
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| * Unzip. | ||
| * Upload the directory to your plugins directory. | ||
| * Activate. | ||
| * Go to any post or page and add a canonical link there. | ||
| * You're done. |