Question

我正在创建一个名为circular的自定义post_type的插件我现在使用元框上传PDF或图像文件我可以检索文件的网址但是如何从我的文件中获取文件名和大小自定义post_type元字段。

这是我的Meta Box代码

function add_custom_meta_boxes() {

    // Define the custom attachment for posts
    add_meta_box(
        'wp_custom_attachment',
        'Custom Attachment',
        'wp_custom_attachment',
        'circular',
        'side'
    );

} // end add_custom_meta_boxes
add_action('add_meta_boxes', 'add_custom_meta_boxes');

function wp_custom_attachment() {

    wp_nonce_field(plugin_basename(__FILE__), 'wp_custom_attachment_nonce');

    $html = '<p class="description">';
        $html .= 'Upload your PDF here.';
    $html .= '</p>';
    $html .= '<input type="file" id="wp_custom_attachment" name="wp_custom_attachment" value="" size="25" />';

    echo $html;

} // end wp_custom_attachment


function save_custom_meta_data($id) {

    /* --- security verification --- */
    if(!wp_verify_nonce($_POST['wp_custom_attachment_nonce'], plugin_basename(__FILE__))) {
      return $id;
    } // end if

    if(defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
      return $id;
    } // end if

    if('circular' == $_POST['post_type']) {
      if(!current_user_can('edit_page', $id)) {
        return $id;
      } // end if
    } else {
        if(!current_user_can('edit_page', $id)) {
            return $id;
        } // end if
    } // end if
    /* - end security verification - */

    // Make sure the file array isn't empty
    if(!empty($_FILES['wp_custom_attachment']['name'])) {

        // Setup the array of supported file types. In this case, it's just PDF.
        $supported_types = array('application/pdf');

        // Get the file type of the upload
        $arr_file_type = wp_check_filetype(basename($_FILES['wp_custom_attachment']['name']));
        $uploaded_type = $arr_file_type['type'];

        // Check if the type is supported. If not, throw an error.
        if(in_array($uploaded_type, $supported_types)) {

            // Use the WordPress API to upload the file
            $upload = wp_upload_bits($_FILES['wp_custom_attachment']['name'], null, file_get_contents($_FILES['wp_custom_attachment']['tmp_name']));

            if(isset($upload['error']) && $upload['error'] != 0) {
                wp_die('There was an error uploading your file. The error is: ' . $upload['error']);
            } else {
                add_post_meta($id, 'wp_custom_attachment', $upload);
                update_post_meta($id, 'wp_custom_attachment', $upload);     
            } // end if/else

        } else {
            wp_die("The file type that you've uploaded is not a PDF.");
        } // end if/else

    } // end if

} // end save_custom_meta_data
add_action('save_post', 'save_custom_meta_data');

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

输出该文件的链接

<?php $img = get_post_meta(get_the_ID(), 'wp_custom_attachment', true); ?>
<a href="<?php echo $img['url']; ?>"> Download PDF Here</a>

Answer 1

如果您可以获得附件ID号（下面的$ attachment_id），您应该可以执行以下操作来获取名称/大小：

$attachment_id = 'YOUR_PDF_ID';
$attahment_file = get_attached_file( $attachment_id );

function getSize($file) {
    $bytes = filesize($file);
    $s = array('b', 'Kb', 'Mb', 'Gb');
    $e = floor(log($bytes)/log(1024));
    return sprintf( '%.2f ' . $s[$e], ( $bytes/pow( 1024, floor($e) ) ) );
}

echo '<p>Name: ' . basename( $attahment_file ) . '</p>';
echo '<p>Size: ' . getSize( $attahment_file ) . '</p>';

我找到了＆＃34; getSize＆＃34;在另一篇文章here上发挥作用。它比使用本机PHP＆＃34; filesize＆＃34;更准确。在匹配WP媒体库元中显示的大小方面起作用。

Answer 2

首先需要获取文件url，我们可以获取大小和名称。此处var app = angular.module('app3', []); app.controller('ctrl1', function($scope) { $scope.first = 1; $scope.second = 2; $scope.update = function(){ $scope.calculation = (+$scope.first + +$scope.second); }; });是自定义字段ID。

wp_custom_attachment

如何获取自定义帖子类型附件的文件名和文件大小

2 个答案: