140114 wordpress源生代码实现SEO

很早之前看到macdang.com的时候，觉得这套模板很清新，比较适合coder做自己的技术博客，想把自己的博客模板也换成这个。可惜查看相关代码没有找到模板作者。昨天查看wopus的时候看到了这套模板： 原名为M2模板。作者通过最wordpress源生php代码实现了翻页，阅读计数等常见插件的功能，不过对于seo这一块并没有做，这里补充下实现wordpress 源生代码实现Seo .

以下代码替换模板代码 header.php中 部分:

<?php
if (is_home ()) {
	$keywords = "相关关键字描述";
	$description = "相关desc描述";
} elseif (is_single ()) {
	if ($post->post_excerpt) {
		$description = $post->post_excerpt;
	} else {
		$str = csubstr ( strip_tags ( $post->post_content ), 0, 220 );
		$str = trim ( $str );
		$str = strip_tags ( $str, "" );
		$str = ereg_replace ( "\t", "", $str );
		$str = ereg_replace ( "\r\n", "", $str );
		$str = ereg_replace ( "\r", "", $str );
		$str = ereg_replace ( "\n", "", $str );
		$str = ereg_replace ( " ", " ", $str );
		$description = trim ( $str );
	}
	$keywords = "";
	$tags = wp_get_post_tags ( $post->ID );
	foreach ( $tags as $tag ) {
		$keywords = $keywords . $tag->name . ", ";
	}
}
?>
<title><?php
global $page, $paged;
wp_title ( '|', true, 'right' );
bloginfo ( 'name' );
$site_description = get_bloginfo ( 'description', 'display' );
if ($site_description && (is_home () || is_front_page ()))
	echo " | $site_description";
if ($paged >= 2 || $page >= 2)
	echo ' | ' . sprintf ( __ ( 'Page %s' ), max ( $paged, $page ) );
?></title>
<meta name="keywords" content="<?=$keywords?>" />
<meta name="description" content="<?=$description?>" />


function csubstr($str, $start=0, $length, $charset="utf-8", $suffix=true){
        if(function_exists("mb_substr"))
                return mb_substr($str, $start, $length, $charset);
        $re['utf-8'] = "/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xff][\x80-\xbf]{3}/";
        $re['gb2312'] = "/[\x01-\x7f]|[\xb0-\xf7][\xa0-\xfe]/";
        $re['gbk'] = "/[\x01-\x7f]|[\x81-\xfe][\x40-\xfe]/";
        $re['big5'] = "/[\x01-\x7f]|[\x81-\xfe]([\x40-\x7e]|\xa1-\xfe])/";
        preg_match_all($re[$charset], $str, $match);
        $slice = join("",array_slice($match[0], $start, $length));
        if($suffix) return $slice."¡­";
}

本文资料:
www.macdang.com  mac党 主要是下载破解mac软件的，目前已经不怎么更新
www.mangguo.org  m2 主题作者