代码实现WordPress添加本地头像功能代替Gravatar头像

PetitQ WordPress教程 2021-12-25 2.65K 0 0

今天就来教大家使用代码将 Gravatar 头像半本地化,那么什么是半本地化呢？也就是通过用户的邮箱判断用户是否拥有 Gravatar 头像，如果拥有则使用 Gravatar 头像，当用户拥有本地头像且拥有 Gravatar 头像时，则优先使用本地头像。

```
<?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 ) && ! 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 = $base_name = sanitize_file_name( substr(md5($user->user_login),0,12) . '_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;
```
```
}
```

也想出现在这里？联系我们吧

将以上代码加入到 functions.php 或者 functions.php 引入的 php 文件中即可实现 Gravatar 头像半本地化，最后来张效果图：

代码实现 WordPress 添加本地头像功能代替 Gravatar 头像

已有 663 人购买

永久更新：
演示数据：

立即购买

查看演示升级 VIP 立刻购买

炫酷企业建站作品展示WordPress中文模板

Supro - 极简电商网站模板WordPress汉化主题

Photon - 全屏摄影相册产品展示网站WordPress汉化主题

WordPress教程

代码实现WordPress添加本地头像功能代替Gravatar头像

代码实现 WordPress 添加本地头像功能代替 Gravatar 头像

相关文章

WooCommerce 使用 PayPal 收款添加手续费

指定 WordPress 页面按需加载 JavaScript

WordPress 可用的缩略图函数

发表回复取消回复

热销模板

WordPress教程

代码实现 WordPress 添加本地头像功能代替 Gravatar 头像

相关文章

发表回复 取消回复

热销模板

发表回复取消回复