wordpress自动加入keyword Description
2010.04.26
为了让Wordpress亲和百度，把合适的keyword Description加人列表页，以前的SEO代码是加在Header.php文件中，只能加到主页和文章页。在谷歌上找了一下，找到解决办法，而且非常好，不用加插件直接加一段代码就好，将下段 代码copy 到主题目录中的 functions.php中的第一个
<?php
后（注意是主题目录）：
/* -----------------------------------------------<<描述自动产生器>> */
function utf8_substr($str,$from,$len){
return preg_replace('#^(?:[\x00-\x7F]|[\xC0-\xFF][\x80-\xBF]+){0,'.$from.'}'.
'((?:[\x00-\x7F]|[\xC0-\xFF][\x80-\xBF]+){0,'.$len.'}).*#s',
'$1',$str);}
function head_meta_desc() {
$pre_length = 80; // description length in # words for post/Page
global $wp_query, $s;
if(is_single() || is_page()) {
$post = $wp_query->post;
$post_custom = get_post_custom($post->ID);
if(!empty($post->post_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) > $pre_length) { $l = $pre_length; $ellipsis = '...'; } else { $l = count($text); $ellipsis = ''; }
$description = ''; for ($i=0; $i<$l; $i++) $description .= $text[$i] . ' '; $description .= $ellipsis;
} elseif (is_home () ) {$description = get_bloginfo('name') . " - " . " 关于人生哲理，人生感悟，励志名言和个人感想，读书看电影感想和个人资料分享等";
} elseif (is_tag() ) {$description = get_bloginfo('name') ."有关 '". single_tag_title('', false) ."'的文章";
} elseif (is_category() ) {$description = get_bloginfo('name') ."有关 '". single_cat_title('', false) ."'的文章";
} elseif (is_search() ) {$description = "有关: '" . wp_specialchars($s) . "'的搜索结果";
} else { $description = "有关: '" . wp_title('', false) ."'的文章"; }
if($description) { $temp = $description; $description = utf8_substr($temp, 0, 90) . '..';
echo "<meta name=\"description\" content=\"$description\" />\n";
}
}
add_action('wp_head', 'head_meta_desc');
// -- END ----------------------------------------
/* -----------------------------------------------
<<关键字自动产生器>>
*/
function tags_category_to_keywords() {
if (is_single()){
global $post; $keywords = '';
foreach( get_the_tags( $post->ID ) as $tags ) { $keywords .= $tags->name . ', '; }
foreach( get_the_category( $post->ID ) as $category ) { $keywords .= $category->cat_name . ', '; }
$temp = substr_replace($keywords,"",-2);
$keywords = $temp;
} elseif (is_home () ) {$keywords = "人生，人生哲理，人生感悟，人生格言，励志名言，不吃独食，分享人生，分享生活";
} elseif (is_tag() ) {$keywords = single_tag_title('', false);
} elseif (is_category() ) {$keywords = single_cat_title('', false);
} elseif (is_search() ) {$keywords = wp_specialchars($s);
} else { $keywords = substr(wp_title('', false),2,90); }
if($keywords) { echo '<meta name="keywords" content="'.$keywords.'" />'. "\n";
}
}
add_action('wp_head', 'tags_category_to_keywords');
// -- END ----------------------------------------
function utf8_substr($str,$from,$len){
return preg_replace('#^(?:[\x00-\x7F]|[\xC0-\xFF][\x80-\xBF]+){0,'.$from.'}'.
'((?:[\x00-\x7F]|[\xC0-\xFF][\x80-\xBF]+){0,'.$len.'}).*#s',
'$1',$str);}
function head_meta_desc() {
$pre_length = 80; // description length in # words for post/Page
global $wp_query, $s;
if(is_single() || is_page()) {
$post = $wp_query->post;
$post_custom = get_post_custom($post->ID);
if(!empty($post->post_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) > $pre_length) { $l = $pre_length; $ellipsis = '...'; } else { $l = count($text); $ellipsis = ''; }
$description = ''; for ($i=0; $i<$l; $i++) $description .= $text[$i] . ' '; $description .= $ellipsis;
} elseif (is_home () ) {$description = get_bloginfo('name') . " - " . " 关于人生哲理，人生感悟，励志名言和个人感想，读书看电影感想和个人资料分享等";
} elseif (is_tag() ) {$description = get_bloginfo('name') ."有关 '". single_tag_title('', false) ."'的文章";
} elseif (is_category() ) {$description = get_bloginfo('name') ."有关 '". single_cat_title('', false) ."'的文章";
} elseif (is_search() ) {$description = "有关: '" . wp_specialchars($s) . "'的搜索结果";
} else { $description = "有关: '" . wp_title('', false) ."'的文章"; }
if($description) { $temp = $description; $description = utf8_substr($temp, 0, 90) . '..';
echo "<meta name=\"description\" content=\"$description\" />\n";
}
}
add_action('wp_head', 'head_meta_desc');
// -- END ----------------------------------------
/* -----------------------------------------------
<<关键字自动产生器>>
*/
function tags_category_to_keywords() {
if (is_single()){
global $post; $keywords = '';
foreach( get_the_tags( $post->ID ) as $tags ) { $keywords .= $tags->name . ', '; }
foreach( get_the_category( $post->ID ) as $category ) { $keywords .= $category->cat_name . ', '; }
$temp = substr_replace($keywords,"",-2);
$keywords = $temp;
} elseif (is_home () ) {$keywords = "人生，人生哲理，人生感悟，人生格言，励志名言，不吃独食，分享人生，分享生活";
} elseif (is_tag() ) {$keywords = single_tag_title('', false);
} elseif (is_category() ) {$keywords = single_cat_title('', false);
} elseif (is_search() ) {$keywords = wp_specialchars($s);
} else { $keywords = substr(wp_title('', false),2,90); }
if($keywords) { echo '<meta name="keywords" content="'.$keywords.'" />'. "\n";
}
}
add_action('wp_head', 'tags_category_to_keywords');
// -- END ----------------------------------------
注意：首页的关键字和描述要自己输入。记得删除原来的Header.php中的关键字和描述代码，不然会重复。
与他有一腿的文章：
TAG标签：Description, keyword, WordPress, 亲和百度, 自动
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2 条留言我要留言 »
1 - ShunYea | 2010-07-10 at 2:54 下午
你好，请问你这个用的是什么代码高亮插件？或者不用的话怎么实现的，谢谢。
[回复]
zouhu8 回复:
七月 15th, 2010 at 4:30 下午
用的 CoolCode，使用的时候在代码前比如加“<code lang="php">*****代码部分</code>” code可直接在wordpress后台编辑框上面找到。
[回复]