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wordpress本地头像

wordpress教程 有客 638浏览
//本地头像
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 ) && ! empty( $id_or_email->user_id ) )
 $user_id = (int) $id_or_email->user_id;
 
 if ( empty( $user_id ) )
 return $avatar;
 
 $local_avatars = get_user_meta( $user_id, 'simple_local_avatar', true );
 
 if ( empty( $local_avatars ) || empty( $local_avatars['full'] ) )
 return $avatar;
 
 $size = (int) $size;
 
 if ( empty( $alt ) )
 $alt = get_the_author_meta( 'display_name', $user_id );
 
 // generate a new size
 if ( empty( $local_avatars[$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] . "' class='avatar avatar-{$size}{$author_class} photo' 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'] = empty( $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 ) . ' />
 ' . __('仅具有头像上传权限的用户具有设置本地头像权限(作者及更高等级角色)。','simple-local-avatars') . '
 </label>
 ';
 }
 
 public function edit_user_profile( $profileuser ) {
 ?>
 <h3><?php _e( '头像','simple-local-avatars' ); ?></h3>
 
 <table class="form-table">
 <tr>
 <th><label for="simple-local-avatar"><?php _e('上传头像','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 ( empty($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 ( empty( $profileuser->simple_local_avatar ) )
 echo '<span class="description">' . __('尚未设置本地头像,请点击“浏览”按钮上传本地头像。','simple-local-avatars') . '</span>';
 else
 echo '
 <input type="checkbox" name="simple-local-avatar-erase" value="1" /> ' . __('移除本地头像','simple-local-avatars') . '<br />
 <span class="description">' . __('如需要修改本地头像,请重新上传新头像。如需要移除本地头像,请选中上方的“移除本地头像”复选框并更新个人资料即可。<br/>移除本地头像后,将恢复使用 Gravatar 头像。','simple-local-avatars') . '</span>
 '; 
 } else {
 if ( empty( $profileuser->simple_local_avatar ) )
 echo '<span class="description">' . __('尚未设置本地头像,请在 Gravatar.com 网站设置头像。','simple-local-avatars') . '</span>';
 else
 echo '<span class="description">' . __('你没有头像上传全乡,如需要修改本地头像,请联系站点管理员。','simple-local-avatars') . '</span>';
 }
 ?>
 </td>
 </tr>
 </table>
 <script type="text/javascript">var form = document.getElementById('your-profile');form.encoding = 'multipart/form-data';form.setAttribute('enctype', 'multipart/form-data');</script>
 <?php 
 }
 
 public function edit_user_profile_update( $user_id ) {
 if ( ! isset( $_POST['_simple_local_avatar_nonce'] ) || ! wp_verify_nonce( $_POST['_simple_local_avatar_nonce'], 'simple_local_avatar_nonce' ) ) //security
 return;
 
 if ( ! empty( $_FILES['simple-local-avatar']['name'] ) ) {
 $mimes = array(
 'jpg|jpeg|jpe' => 'image/jpeg',
 'gif' => 'image/gif',
 'png' => 'image/png',
 'bmp' => 'image/bmp',
 'tif|tiff' => 'image/tiff'
 );
 
 // front end (theme my profile etc) support
 if ( ! function_exists( 'wp_handle_upload' ) )
 require_once( ABSPATH . 'wp-admin/includes/file.php' );
 
 $this->avatar_delete( $user_id ); // delete old images if successful
 
 // need to be more secure since low privelege users can upload
 if ( strstr( $_FILES['simple-local-avatar']['name'], '.php' ) )
 wp_die('For security reasons, the extension ".php" cannot be in your file name.');
 
 $this->user_id_being_edited = $user_id; // make user_id known to unique_filename_callback function
 $avatar = wp_handle_upload( $_FILES['simple-local-avatar'], array( 'mimes' => $mimes, 'test_form' => false, 'unique_filename_callback' => array( $this, 'unique_filename_callback' ) ) );
 
 if ( empty($avatar['file']) ) { // handle failures
 switch ( $avatar['error'] ) {
 case 'File type does not meet security guidelines. Try another.' :
 add_action( 'user_profile_update_errors', create_function('$a','$a->add("avatar_error",__("请上传有效的图片文件。","simple-local-avatars"));') ); 
 break;
 default :
 add_action( 'user_profile_update_errors', create_function('$a','$a->add("avatar_error","<strong>".__("上传头像过程中出现以下错误:","simple-local-avatars")."</strong> ' . esc_attr( $avatar['error'] ) . '");') );
 }
 
 return;
 }
 
 update_user_meta( $user_id, 'simple_local_avatar', array( 'full' => $avatar['url'] ) ); // save user information (overwriting old)
 } elseif ( ! empty( $_POST['simple-local-avatar-erase'] ) ) {
 $this->avatar_delete( $user_id );
 }
 }
 
 /**
 * remove the custom get_avatar hook for the default avatar list output on options-discussion.php
 */
 public function avatar_defaults( $avatar_defaults ) {
 remove_action( 'get_avatar', array( $this, 'get_avatar' ) );
 return $avatar_defaults;
 }
 
 /**
 * delete avatars based on user_id
 */
 public function avatar_delete( $user_id ) {
 $old_avatars = get_user_meta( $user_id, 'simple_local_avatar', true );
 $upload_path = wp_upload_dir();
 
 if ( is_array($old_avatars) ) {
 foreach ($old_avatars as $old_avatar ) {
 $old_avatar_path = str_replace( $upload_path['baseurl'], $upload_path['basedir'], $old_avatar );
 @unlink( $old_avatar_path ); 
 }
 }
 
 delete_user_meta( $user_id, 'simple_local_avatar' );
 }
 
 public function unique_filename_callback( $dir, $name, $ext ) {
 $user = get_user_by( 'id', (int) $this->user_id_being_edited );
 $name = $base_name = sanitize_file_name( $user->user_login . '_avatar' );
 $number = 1;
 
 while ( file_exists( $dir . "/$name$ext" ) ) {
 $name = $base_name . '_' . $number;
 $number++;
 }
 
 return $name . $ext;
 }
}
 
$simple_local_avatars = new Simple_Local_Avatars;
 
function get_simple_local_avatar( $id_or_email, $size = '96', $default = '', $alt = false ) {
 global $simple_local_avatars;
 $avatar = $simple_local_avatars->get_avatar( '', $id_or_email, $size, $default, $alt );
 
 if ( empty ( $avatar ) )
 $avatar = get_avatar( $id_or_email, $size, $default, $alt );
 
 return $avatar;
}

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