如何为额外的用户元字段保存标签并在以后显示它？

下面是我当前添加、保存和显示额外用户元字段的方式：

/* Add Extra Fields to the User Profile */
function extra_user_profile_fields( $user ) { 
  ?>
    <table class="form-table">
    <tr>
    <th><label for="publications"><?php _e("Publications"); ?></label></th>
    <td>
    <textarea rows="10" cols="450" name="publications" id="publications"  class="regular-text" />
    <?php echo esc_attr( get_the_author_meta( \'publications\', $user->ID ) ); ?>
    </textarea><br />
    </td>
    </tr>
    </table>
  <?php 
}

add_action( \'personal_options_update\', \'save_extra_user_profile_fields\' );
add_action( \'edit_user_profile_update\', \'save_extra_user_profile_fields\' );

/* Save extra user profile fields */
function save_extra_user_profile_fields( $user_id ) {
  if ( !current_user_can( \'edit_user\', $user_id ) ) { return false; }
    update_user_meta( $user_id, \'publications\', $_POST[\'publications\'] );
}

/* Display the selected user meta data with a shortcode */
add_shortcode(\'user_meta\', \'user_meta_shortcode_handler\');
/* usage: [user_meta user_id=1] */
function user_meta_shortcode_handler($atts,$content=null){ ?>
  <?php
    echo \'<h3>Publicații</h3>\';
    echo wpautop(get_user_meta($atts[\'user_id\'], \'publications\', true));
  ?>
  <?php
}

这样，只要使用一个短代码，我就可以同时显示多个元数据。现在我想修改这段代码，以便能够为每个用户元字段保存一个标签，并在以后将其与相应的值一起显示。如何使用我的代码执行此操作？

* Display the selected user meta data with a shortcode */ add_shortcode(\'user_meta\', \'user_meta_shortcode_handler\'); /* usage: [user_meta user_id="1" label="publications"] */ function user_meta_shortcode_handler($atts,$content=null){ extract( shortcode_atts( array( \'user_id\' => \'1\', \'label\' => \'publications\' ), $atts ) ); $output.=\'<h3>\'.$label.\'</h3>\'; $output.= wpautop(get_user_meta($user_id, \'publications\', true)); return $output; }

add_action( \'show_user_profile\', \'extra_user_profile_fields\' ); /* Add Extra Fields to the User Profile */ function extra_user_profile_fields( $user ) { ?> <table class="form-table"> <tr> <th><label for="my_label"><?php _e("Publications Label"); ?></label></th> <td> <input type="text" value="<?php echo get_the_author_meta( \'my_label\', $user->ID ); ?>" name="my_label" id="my_label"/> </td> </tr> <tr> <th><label for="my_publications"><?php _e("Publications"); ?></label></th> <td> <textarea rows="10" cols="450" name="my_publications" id="my_publications" class="regular-text" /><?php echo get_the_author_meta( \'my_publications\', $user->ID ); ?></textarea> </td> </tr> </td> </table> <?php } add_action( \'personal_options_update\', \'save_extra_user_profile_fields\' ); add_action( \'edit_user_profile_update\', \'save_extra_user_profile_fields\' ); /* Save extra user profile fields */ function save_extra_user_profile_fields( $user_id ) { if ( !current_user_can( \'edit_user\', $user_id ) ) { return false; } update_user_meta( $user_id, \'my_label\', esc_attr($_POST[\'my_label\']) ); update_user_meta( $user_id, \'my_publications\', esc_attr($_POST[\'my_publications\']) ); } /* Display the selected user meta data with a shortcode */ add_shortcode(\'user_meta\', \'user_meta_shortcode_handler\'); /* usage: [user_meta user_id="1"] */ function user_meta_shortcode_handler($atts,$content=null){ extract( shortcode_atts( array( \'user_id\' => \'1\', ), $atts ) ); $output.=\'<h3>\'; $output.= wpautop(get_user_meta($user_id, \'my_label\', true)); $output.=\'</h3>\'; $output.= wpautop(get_user_meta($user_id, \'my_publications\', true)); return $output; }

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