Building a plugin in wordpress with checkboxes options - wordpress

Question

I'm trying to build a widget with some checkboxes but i don't know how to save values.
is there a way to save them i'm almost at the end of finish my widget, thank you.
this part of my code:
function update($new_instance, $old_instance){
$instance = $old_instance;
$instance['title'] = strip_tags($new_instance['title']); // new_instance es el titulo que ingresa el usuario
$urlsprite = strip_tags($new_instance['urlsprite']);
$urlfacebook = strip_tags($new_instance['urlfacebook']);
$urltwitter = strip_tags($new_instance['urltwitter']);
$urlpicassa = strip_tags($new_instance['urlpicassa']);
$urlyoutube = strip_tags($new_instance['urlyoutube']);
$urlrss = strip_tags($new_instance['urlrss']);
$chkfacebook = $new_instance['chkfacebook'];
$chktwitter = $new_instance['chktwitter'];
$chkpicassa = $new_instance['chkpicassa'];
$chkyoutube = $new_instance['chkyoutube'];
$chkrss = $new_instance['chkrss'];
return $instance;
}
function widget($args, $instance){
extract($args);
<a id="facebook" target="_blank" href="<?php echo $instance['urlfacebook'] ?>"></a>
<a id="twitter" target="_blank" href="<?php echo $instance['urltwitter'] ?>"></a>
<a id="picassa" target="_blank" href="<?php echo $instance['urlpicassa'] ?>"></a>
<a id="youtube" target="_blank" href="<?php echo $instance['urlyoutube'] ?>"></a>
<a id="rss" target="_blank" href="<?php echo $instance['urlrss'] ?>"></a>
<?php
}

Answer 1

This will help you. Basic example of saving wordpress options.
<?php
// create custom plugin settings menu
add_action('admin_menu', 'baw_create_menu');
function baw_create_menu() {
//create new top-level menu
add_menu_page('BAW Plugin Settings', 'BAW Settings', 'administrator', __FILE__, 'baw_settings_page',plugins_url('/images/icon.png', __FILE__));
//call register settings function
add_action( 'admin_init', 'register_mysettings' );
}
function register_mysettings() {
//register our settings
register_setting( 'baw-settings-group', 'new_option_name' );
register_setting( 'baw-settings-group', 'some_other_option' );
register_setting( 'baw-settings-group', 'option_etc' );
}
function baw_settings_page() {
?>
<div class="wrap">
<h2>Your Plugin Name</h2>
<form method="post" action="options.php">
<?php settings_fields( 'baw-settings-group' ); ?>
<?php do_settings_sections( 'baw-settings-group' ); ?>
<table class="form-table">
<tr valign="top">
<th scope="row">New Option Name</th>
<td><input type="text" name="new_option_name" value="<?php echo get_option('new_option_name'); ?>" /></td>
</tr>
<tr valign="top">
<th scope="row">Some Other Option</th>
<td><input type="text" name="some_other_option" value="<?php echo get_option('some_other_option'); ?>" /></td>
</tr>
<tr valign="top">
<th scope="row">Options, Etc.</th>
<td><input type="text" name="option_etc" value="<?php echo get_option('option_etc'); ?>" /></td>
</tr>
</table>
<?php submit_button(); ?>
</form>
</div>
<?php } ?>
Source: http://codex.wordpress.org/Creating_Options_Pages