WordPress: Shortcode to hide email address from Spam Bots

wp_email_antispam_shortcode.php

<?php

/**
 * Shortcode to hide email address from Spam Bots.
 *
 * Example: [email]me@mysite.com[/email]
 * 
 * @uses antispambot() Wordpress native function
 *
 * @param array   $atts    Shortcode attributes. Not used.
 * @param string  $content The shortcode content. Should be an email address.
 * @return string The obfuscated email address.
 */
function my_email_hide_shortcode( $atts , $content = null ) {
    if ( ! is_email( $content ) ) {
        return;
    }
    return '<a href="mailto:' . antispambot( $content ) . '">' . antispambot( $content ) . '</a>';
}
add_shortcode( 'email', 'my_email_hide_shortcode' );

?>