Eklentisiz WordPress Meta Etiketi ile Seo Oluşturmak

<meta name="resource-type" content="document" />
<meta http-equiv="content-type" content="text/html;" />
<meta http-equiv="content-language" content="tr-TR" />
<meta name="author" content="Ulusan" />
<link rel="author" href="https://plus.google.com/+MehmetAliUlusan/posts"/>
<meta name="contact" content="ulusanyazilim@gmail.com" />
<meta name="copyright" content="Copyright (c)2006-2018 UlusanYazılım. All Rights Reserved." />
<meta name="description" content="<?php if ( is_single() ) {
        single_post_title('', true); 
} else {
        bloginfo('name'); echo " - "; bloginfo('description');
}
?>" />
<?php
function csv_tags() {
    $posttags = get_the_tags();
    foreach((array)$posttags as $tag) {
        $csv_tags .= $tag->name . ',';
    }
    if($csv_tags == ","){$csv_tags="";}
    $csv_tags .=",ulusanyazilim";
    return $csv_tags;
}?>
<meta name="keywords" content="<?php echo csv_tags(); ?>" />
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