我是一个初级网站，使用WordPress，我正在编写涉及个人资料页面的插件（不是avatar，因为我实现了这个字段，用户可以上传图像，任何东西，比如我朋友的照片），我添加了字段上传，从目录浏览文件，并使用WordPress将其保存到数据库wp_handle_upload. 我运行了我的代码，但图片没有显示我不知道我的代码（下面）的哪一部分是错误的。

我应该怎么做才能解决这个问题！

这是我修改的代码this discussion

<?php
add_action( \'user_edit_form_tag\',\'make_uploadable_form\');
function make_uploadable_form() {
echo \' enctype="multipart/form-data"\';
}
?>

<?php
add_action( \'show_user_profile\', \'UploadField\' );
add_action( \'edit_user_profile\', \'UploadField\' );

function UploadField( $user ) { 
if ( !current_user_can( \'edit_user\') )
    return false;
$prfile_image_id = get_user_meta($user->ID,\'profile_photo\',true);
$profile_image = wp_get_attachment_image($profile_image_id,"full");

if(!empty($profile_image)){
    echo $profile_image;
}
else{
?>

<h3>Extra profile information</h3>

<table class="form-table">
    <tr>
        <th><label for="Upload">Upload</label></th>
            <td>
                <input name="profile_photo" type="file" id="profile_photo" value="" />
            </td>
</table>

<?php
}

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

function save_user_custom($user_id){

if($user_id == false)
    return false;

// If the upload field has a file in it
if(isset($_FILES[\'profile_photo\'])){
    if(!function_exists(\'wp_handle_upload\'))
        require_once(ABSPATH.\'wp-admin/includes/file.php\');

    // Get the type of the uploaded file. This is returned as "type/extension"
    $arr_file_type = wp_check_filetype(basename($_FILES[\'profile_photo\'][\'name\']));
    $uploaded_file_type = $arr_file_type[\'type\'];
    // Set an array containing a list of acceptable formats
    $allowed_file_types = array(\'image/jpg\',\'image/jpeg\',\'image/gif\',\'image/png\');
    // If the uploaded file is the right format
    if(in_array($uploaded_file_type, $allowed_file_types)) {
        // Options array for the wp_handle_upload function. \'test_upload\' => false
        $upload_overrides = array( \'test_form\' => false ); 

        // Handle the upload using WP\'s wp_handle_upload function. Takes the posted file and an options array
        $uploaded_file = wp_handle_upload($_FILES[\'profile_photo\'], $upload_overrides);

        // If the wp_handle_upload call returned a local path for the image
        if(isset($uploaded_file[\'file\'])) {

            // The wp_insert_attachment function needs the literal system path, which was passed back from wp_handle_upload
            $file_name_and_location = $uploaded_file[\'file\'];

            // Generate a title for the image that\'ll be used in the media library
            $file_title_for_media_library = \'your title here\';

            // Set up options array to add this file as an attachment
            $attachment = array(
                \'post_mime_type\' => $uploaded_file_type,
                \'post_title\' => \'Uploaded image \' . addslashes($file_title_for_media_library),
                \'post_content\' => \'\',
                \'post_status\' => \'inherit\'
            );

            // Run the wp_insert_attachment function. This adds the file to the media library and generates the thumbnails. If you wanted to attch this image to a post, you could pass the post id as a third param and it\'d magically happen.
            $attach_id = wp_insert_attachment( $attachment, $file_name_and_location );
            require_once(ABSPATH . "wp-admin" . \'/includes/image.php\');
            $attach_data = wp_generate_attachment_metadata( $attach_id, $file_name_and_location );
            wp_update_attachment_metadata($attach_id,  $attach_data);

            update_user_meta( $user_id, \'profile_photo\', $attach_id );
        } 

    }

}
}
?>