select-values-width-js-and-php

select.values.php

<script type="text/javascrit">
function newsletter_send( name, email, category register ) {
	jQuery.ajax({
		type: "POST",
		url: alm_localize.ajaxurl,
		data: {
			action		: "newsletter_register", /// function for register data in DB.
			user_name	: name,
			user_email	: email,
			user_category	: category, // Here you can find the values of the select
			user_register	: register
		},
		success: function(data, textStatus, XMLHttpRequest) {
			if( email !== "" && name !== "" && register !== "" ) {
				$( "#newsletter_form" ).find("#feedback").html("<span class='success'Seu email foi registrado com sucesso!</span>");
			}
			$( "#newsletter_form" ).find( ".form_loading" ).removeClass( "show" );
		//	_newsletter_reset(); // reset values form
		},
		error: function(MLHttpRequest, textStatus, errorThrown) {
			$( "#newsletter_form" ).find("#contactResponse").html("<span class='error'>Algo deu errado, tente novamente mais tarde.</span>");
			$( "#newsletter_form" ).find( ".form_loading" ).removeClass( "show" );
		}
	});
}
</script>

<!--  THIS HTML -->

<select id="user_category" name="user_category[]" class="user_category" multiple="">
	<option selected="selected">Selecione uma categoria</option>
	<option value="4">Notícias</option>
	<option value="6">Santa Catarina</option>
	<option value="5">Saúde</option>
	<option value="1">Sem categoria</option>
</select>

<?php

// yeah, i use wordpress :p

/*
 * Function for register data in mysql
 */

function newsletter_register() {

	$user_email	= $_POST["user_email"];
	$user_name	= $_POST["user_name"];
	$user_category	= implode(',', $_POST["user_category"]);
	$user_register	= $_POST["user_register"];

	global $wpdb;

	if(
		isset( $user_name )
		|| isset( $user_email )
		|| isset( $user_category )
	) {
		$wpdb->insert( $wpdb->prefix . "newsletter", array(
			"user_name"	=> $user_name,
			"user_email"	=> $user_email,
			"user_category"	=> $user_category,
			"user_register"	=> $user_register
		));
	}
}

add_action( "wp_ajax_nopriv_newsletter_register", "newsletter_register" );
add_action( "wp_ajax_newsletter_register", "newsletter_register" );
?>