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//Create widget areas

<?php
// In functions.php
register_sidebar(array(
	'name' => 'Sidebar',
 	'id' => 'sidebar',
 	'before_widget' => '<li>',
 	'after_widget' => '</li>',
 	'before_title' => '<h3>',

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// http://codex.wordpress.org/Dashboard_Widgets_API
<?php
function remove_dashboard_widgets() {
  global $wp_meta_boxes;
  unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_plugins']);
  unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_recent_comments']);
  unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_incoming_links']);
  unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_right_now']);
  unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_primary']);
  unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_secondary']);

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<?php
function remove_footer_admin () {
  echo 'My footer text. Thank you <a href="http://wordpress.org">Wordpress</a> for giving me this filter.';
}
add_filter('admin_footer_text', 'remove_footer_admin');
?>

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<?php function your_dashboard_widget() { ?>
<h3>Hello Wordpress user!</h3>
<p>Fill this with HTML or PHP.</p>
<?php };
function add_your_dashboard_widget() {
  wp_add_dashboard_widget( 'your_dashboard_widget', __( 'Widget Title!' ), 'your_dashboard_widget' );
}
add_action('wp_dashboard_setup', 'add_your_dashboard_widget' );
?>

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//Custom admin logo - 30px wide, 31px high transparent gif. Header background color: #464646
add_action('admin_head', 'my_custom_logo');

function my_custom_logo() {
   echo '
      <style type="text/css">
         #header-logo { background-image: url('.get_bloginfo('template_directory').'/images/custom-logo.gif) !important; }
      </style>
   ';
}

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** Add to wp-config.php file **

<?php
# Maximum 5 revisions #
define('WP_POST_REVISIONS', 5);
# Disable revisions #
define('WP_POST_REVISIONS', false);
?>

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<?php
function custom_login_logo() {
    echo '<style type="text/css">
        h1 a { background-image:url('.get_bloginfo('template_directory').'/images/login_logo.png) !important; }
    </style>';
}
add_action('login_head', 'custom_login_logo');
?>

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<?php
/*
Template Name: Name of your Template
*/
?>

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<?php
function new_contactmethods( $contactmethods ) {
    $contactmethods['twitter'] = 'Twitter'; // Add Twitter
    $contactmethods['facebook'] = 'Facebook'; // Add Facebook
    unset($contactmethods['yim']); // Remove YIM
    unset($contactmethods['aim']); // Remove AIM
    unset($contactmethods['jabber']); // Remove Jabber

    return $contactmethods;
}

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<?php
global $current_user;
get_currentuserinfo();
$user_id = $current_user->ID; // You can set $user_id to any users, but this gets the current users ID.

$user_twitter = get_user_meta( $user_id, 'twitter', true);
echo $user_twitter;
?>