|
<?php |
|
/* |
|
Plugin Name: Custom META Tags |
|
Description: Add custom META tags on a per-page/post basis using custom fields. |
|
Author: Keith Solomon |
|
Version: 1.0 |
|
Author URI: http://solowebdesigns.net/ |
|
*/ |
|
|
|
|
|
/* |
|
Custom head META tags |
|
|
|
This plugin will build cutom META (descripton and keyword) tags for your site. You can set defaults for both using the settings below. |
|
It will also use the custom fields defined below to fill in this data. If you choose not to use custom fields, it will build per-post/page |
|
tags using post tags for keywords and either the post/page content or excerpt for the description. |
|
*/ |
|
|
|
function head_meta() { |
|
// Change the settings below to suit your needs. |
|
$default_blog_desc = ''; // Default blog description |
|
$default_blog_kw = ''; // Default blog keywords |
|
|
|
$post_desc_length = 20; // description length in # words for post/Page |
|
$post_use_excerpt = 0; // 0 (zero) to force content as description for post/Page |
|
$custom_desc_key = 'description'; // custom field key; if used, overrides excerpt/content |
|
$custom_kw_key = 'keywords'; // custom field key; if used, overrides post tags |
|
// Stop editing here. |
|
|
|
global $cat, $cache_categories, $wp_query, $wp_version; |
|
|
|
if (is_single() || is_page()) { |
|
$post = $wp_query->post; |
|
$post_custom = get_post_custom($post->ID); |
|
$custom_desc_value = $post_custom["$custom_desc_key"][0]; |
|
$custom_kw_value = $post_custom["$custom_kw_key"][0]; |
|
|
|
if ($custom_kw_value) { |
|
$keywords = $custom_kw_value; |
|
} else { |
|
$posttags = get_the_tags(); |
|
if ($posttags) { |
|
foreach ($posttags as $tag) { |
|
$keywords .= $tag->name.','; |
|
} |
|
} |
|
} |
|
|
|
if ($custom_desc_value) { |
|
$text = $custom_desc_value; |
|
} elseif ($post_use_excerpt) { |
|
$text = $post->post_excerpt; |
|
} else { |
|
$text = $post->post_content; |
|
} |
|
|
|
$text = str_replace(array("\r\n", "\r", "\n", " "), " ", $text); |
|
$text = str_replace(array("\""), "", $text); |
|
$text = trim(strip_tags($text)); |
|
$text = explode(' ', $text); |
|
|
|
if (count($text) > $post_desc_length) { |
|
$l = $post_desc_length; |
|
$ellipsis = '...'; |
|
} else { |
|
$l = count($text); |
|
$ellipsis = ''; |
|
} |
|
|
|
$description = ''; |
|
|
|
for ($i=0; $i<$l; $i++) |
|
$description .= $text[$i] . ' '; |
|
|
|
$description .= $ellipsis; |
|
} elseif (is_category()) { |
|
$category = $wp_query->get_queried_object(); |
|
$description = trim(strip_tags($category->category_description)); |
|
} else { |
|
$description = (empty($default_blog_desc)) ? trim(strip_tags(get_bloginfo('description'))) : $default_blog_desc; |
|
$keywords = $default_blog_kw; |
|
} |
|
|
|
echo "<!-- Meta tags built by Custom META Tags -->\n"; |
|
|
|
if ($keywords) { |
|
echo "<meta name=\"keywords\" content=\"$keywords\" />\n"; |
|
} |
|
|
|
if ($description) { |
|
echo "<meta name=\"description\" content=\"$description\" />\n"; |
|
} |
|
} |
|
|
|
add_action('wp_head', 'head_meta'); |
|
?> |
