Wordpress: Example Shortcode

wp-shortcode.php

/* @Workether ------------------------------------------------------------
English price
--------------------------------------------------------------------------*/

function price_shortcode( $atts, $content = null ) {

  extract( shortcode_atts( array(
      'class' => 'price',
      ), $atts ) );

	$prefixblock = "block-price-";
	$class = $prefixblock.esc_attr($class);


	if ($content == null) {
	 return '<div class="block-price"><span class="price price-text-request">Price on</span><span class="price price-request">Request</span></div>';}
	else {
		return '<div class="block-price ' . esc_attr($class) . '"><span class="price price-text">Prices start at</span><span class="price price-number">' . $content . 'Sek</span></div>';}
	}

add_shortcode( 'price', 'price_shortcode' );