[Add title attribute to image – Wordpress] #seo #wordpress

functions.php

add_filter( 'wp_get_attachment_image_attributes', 'add_title_attachment_image', 10, 3 );
function add_title_attachment_image( $attr, $attachment, $size ){
	if(empty($attr['title'])) $attr['title'] = $attr['alt'];
	return $attr;
}

function add_alt_tags($content)
{
        global $post;
        preg_match_all('/<img (.*?)\/>/', $content, $images);

        if(!is_null($images))
        {
                foreach($images[1] as $index => $value)
                {
						if(!preg_match('/alt=/', $value) || preg_match('/alt=""/', $value))
                        {
                                $new_img = str_replace('<img', '<img title="'.$post->post_title.'" alt="'.$post->post_title.'"', $images[0][$index]);
                                $content = str_replace($images[0][$index], $new_img, $content);
                        }
                }
        }
        return $content;
}
add_filter('the_content', 'add_alt_tags', 99999);