How to Use a Shortcode in WordPress?

Remember shortcodes simplify the addition of features to a WordPress site. Galleries, videos, and various other functionality would require a lot of code editing. By using shortcodes the HTML and other markups are added dynamically directly into the post or page where the user wants them to appear.

Following is the basic example which you help you to understand the shortcode

Step 1. Create PHP File shortcode.php. Insert Following code in file

&lt;?php
add_shortcode('video_emb', 'video_emb');
function video_emb($atts){
    $atts = shortcode_atts(array(
        'src'=>'',
        'height'=>'388',
        'width'=>'600',
        'title'=>''
    ), $atts);   
    echo '
        &lt;div id="tutorial_image">
            &lt;iframe width="' . $atts&#91;'width'] . '" height="' . $atts&#91;'height'] . '" src="' . $atts&#91;'src'] . '" frameborder="0" allowfullscreen>&lt;/iframe>
            &lt;h4>' . $atts&#91;'title'] . '&lt;/h4>
        &lt;/div>
    ';
}
?>

<?php

add_shortcode('video_emb', 'video_emb');

function video_emb($