Hello Guys,

There are number of click plugins available on internet for your seo needs but most of them have many complex function for simple needs. I am not saying that there is no good SEO plugins in the market but they are few like All in One SEO PACK and WordPress SEO by Yoast.

What are Meta Tags ?

• Paste the below code in functions.php file


• Put your own Keywords instead of $default_keywords .


• Add a Just one line code in the head section of header.php


• Tune the Below code according to your website source code.

function basic_wp_seo() {
    global $page, $paged, $post;
    $default_keywords = 'Php Developer forum, Php questions and answers, Java, iphone, Android developer forum'; // customize
    $output = '';

    // description
    $seo_desc = get_post_meta($post->ID, 'mm_seo_desc', true);
    $description = get_bloginfo('description', 'display');
    $pagedata = get_post($post->ID);
    if (is_singular()) {
        if (!empty($seo_desc)) {
            $content = $seo_desc;
        } else if (!empty($pagedata)) {
            $content = apply_filters('the_excerpt_rss', $pagedata->post_content);
            $content = substr(trim(strip_tags($content)), 0, 155);
            $content = preg_replace('#\n#', ' ', $content);
            $content = preg_replace('#\s{2,}#', ' ', $content);
            $content = trim($content);
        } 
    } else {
        $content = $description;  
    }
    $output .= '<meta name="description" content="' . esc_attr($content) . '">' . "\n";

    // keywords
    $keys = get_post_meta($post->ID, 'mm_seo_keywords', true);
    $cats = get_the_category();
    $tags = get_the_tags();
    if (empty($keys)) {
        if (!empty($cats)) foreach($cats as $cat) $keys .= $cat->name . ', ';
        if (!empty($tags)) foreach($tags as $tag) $keys .= $tag->name . ', ';
        $keys .= $default_keywords;
    }
    $output .= "\t\t" . '<meta name="keywords" content="' . esc_attr($keys) . '">' . "\n";

    // robots
    if (is_category() || is_tag()) {
        $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
        if ($paged > 1) {
            $output .=  "\t\t" . '<meta name="robots" content="noindex,follow">' . "\n";
        } else {
            $output .=  "\t\t" . '<meta name="robots" content="index,follow">' . "\n";
        }
    } else if (is_home() || is_singular()) {
        $output .=  "\t\t" . '<meta name="robots" content="index,follow">' . "\n";
    } else {
        $output .= "\t\t" . '<meta name="robots" content="noindex,follow">' . "\n";
    }

    // title
    $title_custom = get_post_meta($post->ID, 'mm_seo_title', true);
    $url = ltrim(esc_url($_SERVER['REQUEST_URI']), '/');
    $name = get_bloginfo('name', 'display');
    $title = trim(wp_title('', false));
    $cat = single_cat_title('', false);
    $tag = single_tag_title('', false);
    $search = get_search_query();

    if (!empty($title_custom)) $title = $title_custom;
    if ($paged >= 2 || $page >= 2) $page_number = ' | ' . sprintf('Page %s', max($paged, $page));
    else $page_number = '';

    if (is_home() || is_front_page()) $seo_title = $name . ' | ' . $description;
    elseif (is_singular())            $seo_title = $title . ' | ' . $name;
    elseif (is_tag())                 $seo_title = 'Tag Archive: ' . $tag . ' | ' . $name;
    elseif (is_category())            $seo_title = 'Category Archive: ' . $cat . ' | ' . $name;
    elseif (is_archive())             $seo_title = 'Archive: ' . $title . ' | ' . $name;
    elseif (is_search())              $seo_title = 'Search: ' . $search . ' | ' . $name;
    elseif (is_404())                 $seo_title = '404 - Not Found: ' . $url . ' | ' . $name;
    else                              $seo_title = $name . ' | ' . $description;

    $output .= "\t\t" . '<title>' . esc_attr($seo_title . $page_number) . '</title>' . "\n";

    return $output;
}

Source: seo without plugin

This is all from my side,you can Drop your queries regarding this Blog at our Php questions and Answers Forum