WordPress: Obfuscates email addresses from spam bot.

wp-antispambot.php

/**
 * Hides email addresses from spam bot.
 *
 * @param array $atts The various options. The only required option is "address".
 * @example [email address="name@example.com"]
 */
function ubnsc_email( $atts ) {
	extract( shortcode_atts( array(
		'type'    => 'email',
		'address' => '',
		'class'   => '',
		'subject' => '',
		'text'    => '',
	), $atts ) );

	switch ( $type ) {
		case 'email'  : $protocol = 'mailto:'; break;
		case 'jabber' : $protocol = 'xmpp:';   break;
	}

	if ( $class ) $css = 'class="' . esc_attr( $class ) . '" ';

	if ( $subject ) $subject = '?subject=' . esc_attr( $subject );

	if ( $text == '' ) $text = antispambot( $address );

	$output = '<a ' . $css . 'href="' . $protocol . antispambot( $address, 1 ) . $subject . '">' . $text . '</a>';

	return $output;
}
add_shortcode('email', 'ubnsc_email');