wp_update_user ( $userdata )
wp_update_user是一个函数,用于更新WordPress数据库中的现有用户: 该函数接收一个参数数组,包括用户ID、用户名、用户电子邮件和用户密码,并使用它们来更新数据库中的用户。
更新数据库中的一个用户。
通过在$userdata参数数组中指定’user_pass’值,可以更新一个用户的密码。
如果当前用户的密码正在被更新,那么cookies将被清除。
function wp_update_user( $userdata ) { if ( $userdata instanceof stdClass ) { $userdata = get_object_vars( $userdata ); } elseif ( $userdata instanceof WP_User ) { $userdata = $userdata->to_array(); } $user_id = isset( $userdata['ID'] ) ? (int) $userdata['ID'] : 0; if ( ! $user_id ) { return new WP_Error( 'invalid_user_id', __( 'Invalid user ID.' ) ); } // First, get all of the original fields. $user_obj = get_userdata( $user_id ); if ( ! $user_obj ) { return new WP_Error( 'invalid_user_id', __( 'Invalid user ID.' ) ); } $user = $user_obj->to_array(); // Add additional custom fields. foreach ( _get_additional_user_keys( $user_obj ) as $key ) { $user[ $key ] = get_user_meta( $user_id, $key, true ); } // Escape data pulled from DB. $user = add_magic_quotes( $user ); if ( ! empty( $userdata['user_pass'] ) && $userdata['user_pass'] !== $user_obj->user_pass ) { // If password is changing, hash it now. $plaintext_pass = $userdata['user_pass']; $userdata['user_pass'] = wp_hash_password( $userdata['user_pass'] ); /** * Filters whether to send the password change email. * * @since 4.3.0 * * @see wp_insert_user() For `$user` and `$userdata` fields. * * @param bool $send Whether to send the email. * @param array $user The original user array. * @param array $userdata The updated user array. */ $send_password_change_email = apply_filters( 'send_password_change_email', true, $user, $userdata ); } if ( isset( $userdata['user_email'] ) && $user['user_email'] !== $userdata['user_email'] ) { /** * Filters whether to send the email change email. * * @since 4.3.0 * * @see wp_insert_user() For `$user` and `$userdata` fields. * * @param bool $send Whether to send the email. * @param array $user The original user array. * @param array $userdata The updated user array. */ $send_email_change_email = apply_filters( 'send_email_change_email', true, $user, $userdata ); } clean_user_cache( $user_obj ); // Merge old and new fields with new fields overwriting old ones. $userdata = array_merge( $user, $userdata ); $user_id = wp_insert_user( $userdata ); if ( is_wp_error( $user_id ) ) { return $user_id; } $blog_name = wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES ); $switched_locale = false; if ( ! empty( $send_password_change_email ) || ! empty( $send_email_change_email ) ) { $switched_locale = switch_to_locale( get_user_locale( $user_id ) ); } if ( ! empty( $send_password_change_email ) ) { /* translators: Do not translate USERNAME, ADMIN_EMAIL, EMAIL, SITENAME, SITEURL: those are placeholders. */ $pass_change_text = __( 'Hi ###USERNAME###, This notice confirms that your password was changed on ###SITENAME###. If you did not change your password, please contact the Site Administrator at ###ADMIN_EMAIL### This email has been sent to ###EMAIL### Regards, All at ###SITENAME### ###SITEURL###' ); $pass_change_email = array( 'to' => $user['user_email'], /* translators: Password change notification email subject. %s: Site title. */ 'subject' => __( '[%s] Password Changed' ), 'message' => $pass_change_text, 'headers' => '', ); /** * Filters the contents of the email sent when the user's password is changed. * * @since 4.3.0 * * @param array $pass_change_email { * Used to build wp_mail(). * * @type string $to The intended recipients. Add emails in a comma separated string. * @type string $subject The subject of the email. * @type string $message The content of the email. * The following strings have a special meaning and will get replaced dynamically: * - ###USERNAME### The current user's username. * - ###ADMIN_EMAIL### The admin email in case this was unexpected. * - ###EMAIL### The user's email address. * - ###SITENAME### The name of the site. * - ###SITEURL### The URL to the site. * @type string $headers Headers. Add headers in a newline (rn) separated string. * } * @param array $user The original user array. * @param array $userdata The updated user array. */ $pass_change_email = apply_filters( 'password_change_email', $pass_change_email, $user, $userdata ); $pass_change_email['message'] = str_replace( '###USERNAME###', $user['user_login'], $pass_change_email['message'] ); $pass_change_email['message'] = str_replace( '###ADMIN_EMAIL###', get_option( 'admin_email' ), $pass_change_email['message'] ); $pass_change_email['message'] = str_replace( '###EMAIL###', $user['user_email'], $pass_change_email['message'] ); $pass_change_email['message'] = str_replace( '###SITENAME###', $blog_name, $pass_change_email['message'] ); $pass_change_email['message'] = str_replace( '###SITEURL###', home_url(), $pass_change_email['message'] ); wp_mail( $pass_change_email['to'], sprintf( $pass_change_email['subject'], $blog_name ), $pass_change_email['message'], $pass_change_email['headers'] ); } if ( ! empty( $send_email_change_email ) ) { /* translators: Do not translate USERNAME, ADMIN_EMAIL, NEW_EMAIL, EMAIL, SITENAME, SITEURL: those are placeholders. */ $email_change_text = __( 'Hi ###USERNAME###, This notice confirms that your email address on ###SITENAME### was changed to ###NEW_EMAIL###. If you did not change your email, please contact the Site Administrator at ###ADMIN_EMAIL### This email has been sent to ###EMAIL### Regards, All at ###SITENAME### ###SITEURL###' ); $email_change_email = array( 'to' => $user['user_email'], /* translators: Email change notification email subject. %s: Site title. */ 'subject' => __( '[%s] Email Changed' ), 'message' => $email_change_text, 'headers' => '', ); /** * Filters the contents of the email sent when the user's email is changed. * * @since 4.3.0 * * @param array $email_change_email { * Used to build wp_mail(). * * @type string $to The intended recipients. * @type string $subject The subject of the email. * @type string $message The content of the email. * The following strings have a special meaning and will get replaced dynamically: * - ###USERNAME### The current user's username. * - ###ADMIN_EMAIL### The admin email in case this was unexpected. * - ###NEW_EMAIL### The new email address. * - ###EMAIL### The old email address. * - ###SITENAME### The name of the site. * - ###SITEURL### The URL to the site. * @type string $headers Headers. * } * @param array $user The original user array. * @param array $userdata The updated user array. */ $email_change_email = apply_filters( 'email_change_email', $email_change_email, $user, $userdata ); $email_change_email['message'] = str_replace( '###USERNAME###', $user['user_login'], $email_change_email['message'] ); $email_change_email['message'] = str_replace( '###ADMIN_EMAIL###', get_option( 'admin_email' ), $email_change_email['message'] ); $email_change_email['message'] = str_replace( '###NEW_EMAIL###', $userdata['user_email'], $email_change_email['message'] ); $email_change_email['message'] = str_replace( '###EMAIL###', $user['user_email'], $email_change_email['message'] ); $email_change_email['message'] = str_replace( '###SITENAME###', $blog_name, $email_change_email['message'] ); $email_change_email['message'] = str_replace( '###SITEURL###', home_url(), $email_change_email['message'] ); wp_mail( $email_change_email['to'], sprintf( $email_change_email['subject'], $blog_name ), $email_change_email['message'], $email_change_email['headers'] ); } if ( $switched_locale ) { restore_previous_locale(); } // Update the cookies if the password changed. $current_user = wp_get_current_user(); if ( $current_user->ID == $user_id ) { if ( isset( $plaintext_pass ) ) { wp_clear_auth_cookie(); // Here we calculate the expiration length of the current auth cookie and compare it to the default expiration. // If it's greater than this, then we know the user checked 'Remember Me' when they logged in. $logged_in_cookie = wp_parse_auth_cookie( '', 'logged_in' ); /** This filter is documented in wp-includes/pluggable.php */ $default_cookie_life = apply_filters( 'auth_cookie_expiration', ( 2 * DAY_IN_SECONDS ), $user_id, false ); $remember = false; if ( false !== $logged_in_cookie && ( $logged_in_cookie['expiration'] - time() ) > $default_cookie_life ) { $remember = true; } wp_set_auth_cookie( $user_id, $remember ); } } return $user_id; }
要使用` get_users
`函数获取所有用户列表,可以按照以下步骤进行:
1. 使用` get_users
`函数调用获取用户列表:
$users = get_users();
2. 您可以按需使用参数来过滤结果。例如,您可以通过角色、用户ID、用户登录名等过滤用户列表。以下是一个根据用户角色为过滤条件的示例:
$users = get_users( array( 'role' => 'subscriber' // 将角色名称替换为您要过滤的角色 ) );
在上述示例中,将` role
`参数设置为所需的角色名称来过滤用户列表。
3. 您可以使用循环遍历获取的用户列表,并访问每个用户的属性。例如,以下示例将显示每个用户的用户名和电子邮件地址:
foreach( $users as $user ) { echo '用户名:' . $user->user_login . ', 电子邮件:' . $user->user_email . ; }
在上述示例中,通过` $user->user_login
`和` $user->user_email
`访问每个用户的用户名和电子邮件地址。
请注意,` get_users
`函数默认返回所有用户,并可以根据需要使用更多参数进行过滤。您可以参阅WordPress官方文档中的` get_users
`函数文档,了解更多可用参数和用法示例。
总结起来,使用` get_users
`函数获取所有用户列表的步骤是:
get_users
`函数获取用户列表。在WordPress中,可以使用WP_PLUGIN_DIR和WP_PLUGIN_URL常量来定义插件的目录路径和URL。
1. `WP_PLUGIN_DIR`:这是一个常量,用于定义插件的目录路径(文件系统路径)。您可以使用以下代码在插件文件中访问该常量:
$plugin_dir = WP_PLUGIN_DIR . '/your-plugin-folder/';
在上述代码中,将"your-plugin-folder"替换为您插件的实际文件夹名称。使用该常量,您可以获取插件文件的完整路径。
2. `WP_PLUGIN_URL`:这是一个常量,用于定义插件的URL(用于在网页上访问插件文件)。以下是一个使用该常量的示例:
$plugin_url = WP_PLUGIN_URL . '/your-plugin-folder/';
同样,请将"your-plugin-folder"替换为您插件的实际文件夹名称。使用该常量,您可以获取插件在网页上的完整URL。
请注意,`WP_PLUGIN_DIR`和`WP_PLUGIN_URL`常量在WordPress版本2.6之后引入。从WordPress 5.5版本开始,这两个常量被标记为过时(deprecated),因为WordPress更倾向于使用新的插件文件结构。如果您正在开发新插件,建议使用新的插件文件结构和相关函数。
在新的插件文件结构中,可以使用以下函数来获取插件的目录路径和URL:
- `plugin_dir_path()`:获取插件目录路径。
- `plugin_dir_url()`:获取插件URL。
这些函数会自动将插件的版本、多站点和SSL等考虑因素纳入计算。
总结起来,使用`WP_PLUGIN_DIR`和`WP_PLUGIN_URL`常量定义插件的目录和URL的方法是:
$plugin_dir = WP_PLUGIN_DIR . '/your-plugin-folder/'; $plugin_url = WP_PLUGIN_URL . '/your-plugin-folder/';
但请注意,这两个常量已被标记为过时,建议使用新的插件文件结构和相关函数来获取插件的路径和URL。
使用PHP在WordPress中添加自定义功能可以通过以下方式实现:
下面是一个实操示例。
要在WordPress中添加自定义功能,可以按照以下步骤使用PHP编写并添加自定义功能:
// 添加自定义功能示例 // 1. 创建自定义短代码 function custom_shortcode() { return '这是我的自定义短代码内容'; } add_shortcode('custom', 'custom_shortcode'); // 2. 自定义小工具 function custom_widget() { echo '这是我的自定义小工具内容'; } register_widget('custom_widget'); // 3. 自定义菜单 function custom_menu() { register_nav_menu('custom-menu', '自定义菜单'); } add_action('after_setup_theme', 'custom_menu'); // 4. 自定义页面模板 function custom_page_template() { /* Template Name: 自定义模板 */ // 自定义模板的内容和样式 }
请注意,修改主题文件可以在主题更新时丢失,因此建议在进行任何更改之前备份functions.php文件。此外,为避免不必要的错误和冲突,建议在添加自定义功能前先了解WordPress开发文档和最佳实践,以确保正确、安全地实现所需的自定义功能。
使用 do_action
函数可以触发一个钩子函数。do_action
函数的参数与要触发的钩子函数的参数相同。
例如,触发save_post钩子函数的代码如下:
do_action( 'save_post', $post_ID, $post );
这里,$post_ID
和 $post
是传递给钩子函数的参数。
使用 wp_get_current_user
获取当前登录用户的信息:
$current_user = wp_get_current_user(); // 获取当前用户的ID $user_id = $current_user->ID; // 获取当前用户的用户名 $user_login = $current_user->user_login; // 获取当前用户的邮箱 $user_email = $current_user->user_email; // 获取当前用户的显示名称 $display_name = $current_user->display_name;