目前 WordPress 網站幾乎都是使用 Gravatar 全球通頭像來關聯用户頭像的,但是由於 Gravatar 的服務器是在國外,國內經常由於某些 XXX 原因而連接不上,今天就來教大家使用代碼將 Gravatar 頭像半本地化, 那麼什麼是半本地化呢?也就是通過用户的郵箱判斷用户是否擁有 Gravatar 頭像,如果擁有則使用 Gravatar 頭像,當用户擁有本地頭像且擁有 Gravatar 頭像時,則優先使用本地頭像。
- <?php
- class Simple_Local_Avatars {
- private $user_id_being_edited;
- public function __construct() {
- add_filter( 'get_avatar', array( $this, 'get_avatar' ), 10, 5 );
- add_action( 'admin_init', array( $this, 'admin_init' ) );
- add_action( 'show_user_profile', array( $this, 'edit_user_profile' ) );
- add_action( 'edit_user_profile', array( $this, 'edit_user_profile' ) );
- add_action( 'personal_options_update', array( $this, 'edit_user_profile_update' ) );
- add_action( 'edit_user_profile_update', array( $this, 'edit_user_profile_update' ) );
- add_filter( 'avatar_defaults', array( $this, 'avatar_defaults' ) );
- }
- public function get_avatar( $avatar = '', $id_or_email, $size = 96, $default = '', $alt = false ) {
- if ( is_numeric($id_or_email) )
- $user_id = (int) $id_or_email;
- elseif ( is_string( $id_or_email ) && ( $user = get_user_by( 'email', $id_or_email ) ) )
- $user_id = $user->ID;
- elseif ( is_object( $id_or_email ) && ! emptyempty( $id_or_email->user_id ) )
- $user_id = (int) $id_or_email->user_id;
- if ( emptyempty( $user_id ) )
- return $avatar;
- $local_avatars = get_user_meta( $user_id, 'simple_local_avatar', true );
- if ( emptyempty( $local_avatars ) || emptyempty( $local_avatars['full'] ) )
- return $avatar;
- $size = (int) $size;
- if ( emptyempty( $alt ) )
- $alt = get_the_author_meta( 'display_name', $user_id );
- // generate a new size
- if ( emptyempty( $local_avatars[$size] ) ) {
- $upload_path = wp_upload_dir();
- $avatar_full_path = str_replace( $upload_path['baseurl'], $upload_path['basedir'], $local_avatars['full'] );
- $image_sized = image_resize( $avatar_full_path, $size, $size, true );
- // deal with original being >= to original image (or lack of sizing ability)
- $local_avatars[$size] = is_wp_error($image_sized) ? $local_avatars[$size] = $local_avatars['full'] : str_replace( $upload_path['basedir'], $upload_path['baseurl'], $image_sized );
- // save updated avatar sizes
- update_user_meta( $user_id, 'simple_local_avatar', $local_avatars );
- } elseif ( substr( $local_avatars[$size], 0, 4 ) != 'http' ) {
- $local_avatars[$size] = home_url( $local_avatars[$size] );
- }
- $author_class = is_author( $user_id ) ? ' current-author' : '' ;
- $avatar = "<img alt='" . esc_attr( $alt ) . "' src='" . $local_avatars[$size] . "' height='{$size}' width='{$size}' />";
- return apply_filters( 'simple_local_avatar', $avatar );
- }
- public function admin_init() {
- //load_plugin_textdomain( 'simple-local-avatars', false, dirname( plugin_basename( __FILE__ ) ) . '/localization/' );
- register_setting( 'discussion', 'simple_local_avatars_caps', array( $this, 'sanitize_options' ) );
- add_settings_field( 'simple-local-avatars-caps', __('Local Avatar Permissions','simple-local-avatars'), array( $this, 'avatar_settings_field' ), 'discussion', 'avatars' );
- }
- public function sanitize_options( $input ) {
- $new_input['simple_local_avatars_caps'] = emptyempty( $input['simple_local_avatars_caps'] ) ? 0 : 1;
- return $new_input;
- }
- public function avatar_settings_field( $args ) {
- $options = get_option('simple_local_avatars_caps');
- echo '
- <label for="simple_local_avatars_caps">
- <input type="checkbox" name="simple_local_avatars_caps" id="simple_local_avatars_caps" value="1" ' . @checked( $options['simple_local_avatars_caps'], 1, false ) . ' />
- ' . __('僅具有頭像上傳權限的用户具有設置本地頭像權限 (作者及更高等級角色) 。','simple-local-avatars') . '
- </label>
- ';
- }
- public function edit_user_profile( $profileuser ) {
- ?>
- <h3><?php _e( '頭像','simple-local-avatars' ); ?></h3>
- <table class="form-table">
- <tr>
- <th><label for="simple-local-avatar"><?php _e('上傳頭像','simple-local-avatars'); ?></label></th>
- <td style="width: 50px;" valign="top">
- <?php echo get_avatar( $profileuser->ID ); ?>
- </td>
- <td>
- <?php
- $options = get_option('simple_local_avatars_caps');
- if ( emptyempty($options['simple_local_avatars_caps']) || current_user_can('upload_files') ) {
- do_action( 'simple_local_avatar_notices' );
- wp_nonce_field( 'simple_local_avatar_nonce', '_simple_local_avatar_nonce', false );
- ?>
- <input type="file" name="simple-local-avatar" id="simple-local-avatar" /><br />
- <?php
- if ( emptyempty( $profileuser->simple_local_avatar ) )
- echo '<span class="description">' . __('尚未設置本地頭像,請點擊 「瀏覽」 按鈕上傳本地頭像。','simple-local-avatars') . '</span>';
- else
- echo '
- <input type="checkbox" name="simple-local-avatar-erase" value="1" /> ' . __('移除本地頭像','simple-local-avatars') . '<br />
- <span class="description">' . __('如需要修改本地頭像,請重新上傳新頭像。如需要移除本地頭像,請選中上方的 「移除本地頭像」 複選框並更新個人資料即可。<br/> 移除本地頭像後,將恢復使用 Gravatar 頭像。','simple-local-avatars') . '</span>
style="">
>