我正在尝试上载一个名为Products 使用wp_upload_bits. 我只是在我的wp管理员中这样做。我不想将这些文件添加到媒体库中，我只想上传它们，并在显示产品时返回URL。

但是，当我这样做时，我得到一个错误，即它是从函数返回的无效文件类型。我已经在函数中使用它设置了enctype。php

//Allow file uploads
function update_edit_form() {
    echo \' enctype="multipart/form-data"\';
} // end update_edit_form
add_action(\'post_edit_form_tag\', \'update_edit_form\');

这是我在“管理”菜单上生成元数据库的代码

function products_pdf_uploads_show_meta() {
    global $meta_box_pdf_uploads, $post, $prefix;

    echo \'<table class="form-table">\';
    echo \'<p class="description">Upload your PDFs here</p>\';
    foreach ($meta_box_pdf_uploads[\'fields\'] as $field) {
        // get current post meta data
        $meta = get_post_meta($post->ID, $field[\'id\'], true);

        echo \'<tr>\',
                \'<td>\',
                    //\'<input type="file" style="width: 700px;" name="\', $field[\'id\'], \'" id="\', $field[\'id\'], \'" value="\', $meta ? $meta : null, \'" />\'
                    \'<input type="file" style="width: 700px;" name="\', $field[\'id\'], \'" id="\', $field[\'id\'], \'" />\',
                \'</td>\',
             \'</tr>\';
    }

    echo \'</table>\';

}
add_meta_box($meta_box_pdf_uploads[\'id\'], $meta_box_pdf_uploads[\'title\'], \'products_pdf_uploads_show_meta\', $meta_box_pdf_uploads[\'page\'], $meta_box_pdf_uploads[\'context\'], $meta_box_pdf_uploads[\'priority\']);

这与最后一行无关，是吗？我打电话的地方add_meta_box 并传递自定义post类型PRODUCT 没有指定页面或帖子？尽管如此。

以下是我上载metabox PDF文件的代码：

   //Upload PDF files
    foreach ($meta_box_pdf_uploads[\'fields\'] as $pdf_field) {

        //put file array into a variable
        $pdf = $_FILES[$pdf_field[\'name\']];

        //if array is set and there is no error 
        if(isset($pdf[\'error\']) && $pdf[\'error\'] > 0) {

            //setup error handling based on error code
            wp_die(\'Error uploading file: Error Number is \' . $pdf[\'error\']);

        } else {  //Passed              

            //setup file type allowed
            $supported_file_type = array(\'application/pdf\');
            //Get the file type
            $uploaded_file_type = $pdf[\'type\'];

            //check if file type is allowed
            if(in_array($uploaded_file_type, $supported_file_type)) {

                //upload file
                $uploaded_file = wp_upload_bits($_FILES[$pdf_field[\'name\']], null, file_get_contents($_FILES[$pdf_field[\'tmp_name\']]));

                print_r($uploaded_file);
                wp_die(\'did it upload?\');

                add_post_meta($post_id, $pdf_field[\'id\'], $uploaded_file);
                update_post_meta($post_id, $pdf_field[\'id\'], $uploaded_file);

            } else {  // NOT A PDF

                wp_die(\'The file you tried to upload was not a PDF\');

            }


        }

当我做print_r($uploaded_file) 要查看函数返回的内容，我得到Array ( [error] => Invalid file type )

我已经检查了我的wp-includes/functions.php 它显然允许get_allowed_mime_types() 作用

\'pdf\' => \'application/pdf\',

我错过什么了吗？

以下是var_dump($_FILES). 我目前有两个字段，当我测试时，我只选择第一个要上载的文件。

array(2) { ["aps_pdf1"]=> array(5) { ["name"]=> string(12) "1testpdf.pdf" ["type"]=> string(15) "application/pdf" ["tmp_name"]=> string(14) "/tmp/phpwdXK0T" ["error"]=> int(0) ["size"]=> int(8278) } 
["aps_pdf2"]=> array(5) { ["name"]=> string(0) "" ["type"]=> string(0) "" ["tmp_name"]=> string(0) "" ["error"]=> int(4) ["size"]=> int(0) } }

$uploaded_file = wp_upload_bits($_FILES[$pdf_field[\'name\']], null, file_get_contents($_FILES[$pdf_field[\'tmp_name\']]));

$uploaded_file = wp_upload_bits($pdf[\'name\'], null, file_get_contents($pdf[\'tmp_name\']));