//关键字
function deel_keywords() {global $s, $post;//声明$post全局变量$keywords = '';if ( is_single() ) {//if ( get_the_tags( $post->ID ) ) {//foreach ( get_the_tags( $post->ID ) as $tag ) $keywords .= $tag->name . ', ';//}    //如果文章有标签，关键词为标签$category = get_the_category();$parent = get_cat_name($category[0]->category_parent);//echo $parent;//得到父级分类名称foreach ( get_the_category( $post->ID ) as $category ) $keywords .=$parent.','. $category->cat_name . ', '.get_the_title();
//关键词为父级分类名称，分类名称，文章标题
//下面判断条件为不同模板$keywords = substr_replace( $keywords , '' , -2);}// elseif ( is_home () )    { $keywords = dopt('d_keywords');// } elseif ( is_tag() )      { $keywords = single_tag_title('', false);//} elseif ( is_category() ) { $keywords = single_cat_title('', false);//} elseif ( is_search() )   { $keywords = esc_html( $s, 1 );// } else { $keywords = trim( wp_title('', false) );// }if ( $keywords ) {echo "<meta name=\"keywords\" content=\"$keywords\">\n";}
}
//关键字加入head头部代码
add_action('wp_head','deel_keywords');

//网站描述
function deel_description() {global $s, $post;$description = '';// $blog_name = get_bloginfo('name');if ( is_singular() ) {//if( !empty( $post->post_excerpt ) ) {//  $text = $post->post_excerpt;//此处判断是否有摘要，有摘要，将其作为描述//} else {$text = $post->post_content;}$description = trim( str_replace( array( "\r\n", "\r", "\n", "　", " "), " ", str_replace( "\"", "'", strip_tags( $text ) ) ) );//以下为各种判断条件//if ( !( $description ) ) $description = $blog_name . "-" . trim( wp_title('', false) );// } elseif ( is_home () )    { $description = dopt('d_description'); // 首頁要自己加// } elseif ( is_tag() )      { $description = $blog_name . "'" . single_tag_title('', false) . "'";
//  } elseif ( is_category() ) { $description = trim(strip_tags(category_description()));
//  } elseif ( is_archive() )  { $description = $blog_name . "'" . trim( wp_title('', false) ) . "'";
//  } elseif ( is_search() )   { $description = $blog_name . ": '" . esc_html( $s, 1 ) . "' 的搜索結果";// } else { $description = $blog_name . "'" . trim( wp_title('', false) ) . "'";//}$description = mb_substr( $description, 0, 80, 'utf-8' );echo "<meta name=\"description\" content=\"$description\">\n";}
//页面描述加入头部head标签中
add_action('wp_head','deel_description');

<script type="text/javascript">var title = "<?php the_title(); ?>"+'-走势分析图';$(function(){$('.article-content img').attr('alt',title);})
</script>
//其中.article-content img，要获取到图片所在div