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很多时候我们在写文章的时候, 一些文章是没有图片的那么对于现在搜索引擎来说, 没有图片的文章对于seo并不是很友好, 那么我们可以判断文章内有图片就给文章添加一张图片, 如何添加跟着卡卡哥一起来了解下吧.
实现的方法还是比较的简单, 需要函数代码来实现, 把下面的这个代码添加到functions函数模板里面
//文章判断图片
add_filter('the_content','isimages','p');
//判断文章是否有图片
function isimages($content)
{
if( !is_page() ){
global $post;
$temp_url = "";
if ( has_post_thumbnail() ) {
} else {
$content = $post->post_content;
$id = $post->ID;
preg_match_all('/<img.*?(?: |\\t|\\r|\\n)?src=[\'"]?(.+?)[\'"]?(?:(?: |\\t|\\r|\\n)+.*?)?>/sim', $content, $strResult, PREG_PATTERN_ORDER);
$n = count($strResult[1]);
if($n > 0){
}else {
$temp_no = rand(1,51);
$temp_url = "<img src='".get_bloginfo('url')."/images/".$temp_no.".jpg' alt='".$post->post_title."'>";
$content = $temp_url . $content;
$my_post = array();
$my_post['ID'] = $id;
$my_post['post_content'] = $content;
wp_update_post( $my_post );
}
}
}
return $content;
}
这个是在文章的顶部添加一张图片, 还有就是卡卡哥自己添加了一个P标签, <img src='”.get_bloginfo(‘url’).”/images/这里的图片地址是可以更改的, 默认的是在根目录的images文件下默认的1-51张图片随机调用, 等你调用后刷新是不会变动的.
其实还是主要是为了用户阅读更加的友好, 还有搜索引擎的友好, 我们在添加的时候可以根据的要求来添加.
