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Get Url parameters values

// Add Shortcode
function get_url_parameter( $atts ) {

	// Attributes
	$atts = shortcode_atts(
		array(
			'parameter' => '',
		),
		$atts,
		'urlparameter'
	);

	var parameter = $atts['parameter'];
	return $_GET[parameter];

}
add_shortcode( 'urlparameter', 'get_url_parameter' );