我试图在插件上使用wp_get_attachment_metadata()函数。它正在调用函数，在里面我尝试获取附件的元数据信息。
$file = wp_get_attachment_metadata( $attachment_id, false);
问题是此代码仅返回图像文件（png，jpg）的元数据，即使其他文件类型已配置并正在正确上载。 （我可以看到媒体列表中的其他文件，但是，我无法使用此功能访问其元数据。）
请查看抓取元数据的代码：
add_filter( 'fu_is_debug', '__return_true' );
add_action( 'fu_after_upload', 'my_fu_after_upload', 10, 3 );
function my_fu_after_upload( $attachment_ids, $success, $post_id ) {
// do something with freshly uploaded files
// This happens on POST request, so $_POST will also be available for you
$dest_folder = "/exports/data/".$post_id;
echo "FUNCTION AFTER UPLOAD: " . "<br>attachment_ids=";
print_r($attachment_ids);
echo "<br>result=". $success . "<br>post_id=". $post_id ;
print_r($_POST);
$post_name = get_post_field( 'post_title', $post_id, "");
echo "Post name = " . $post_name . "<br>";
if (!is_dir($dest_folder))
mkdir($dest_folder);
$upload_dir = wp_upload_dir();
echo "Upload dir<br>";
print_r($upload_dir);
foreach ($attachment_ids as $attachment_id) {
printf("Getting attacments to atta %d <br>", $attachment_id);
$file = wp_get_attachment_metadata( $attachment_id, false);
print_r($file);
echo "<br>";
$file = $file['file'];
$source_file = $upload_dir['basedir'] .'/'. $file;
// Get the last name of the file, ie for /2013/07/file.img returns file.img
$file = explode('/', $file);
$file = $file[count($file) - 1];
// Get the file extension
$f_extension = explode('.', $file);
if (count($f_extension) < 2 ) {
$f_extension = "";
} else {
$f_extension = $f_extension[count($f_extension) - 1];
}
$dest_file = $dest_folder . '/' . $_POST['ra'] . '.' . $f_extension;
printf("Copying '%s' to '%s'<br>", $source_file, $dest_file);
// TODO: Verificar se não existe o arquivo antes
copy($source_file, $dest_file);
}
flush();
}
add_action('fu_upload_result', 'my_fu_upload_result', 10, 2 );
function my_fu_upload_result( $layout, $result ) {
// do something
echo "FUNCTION UPLOAD RESULT: " . "<br>layout=" . $layout .
"<br>result=". $result;
print_r($_POST);
}
来源：https://gist.github.com/sombrafam/426dad85eb390c9b6082
图像文件的屏幕日志：
FUNCTION AFTER UPLOAD:
attachment_ids=Array ( [0] => 121 )
result=1
post_id=32Array ( [post_ID] => 32 [post_title] => Erlon Cruz [ra] => 123456 [action] => upload_ugc [form_layout] => image [fu_nonce] => d71734168a [_wp_http_referer] => /?p=32 [ff] => f3c01b8520a3bdaf1f0141dd2b20f488 [form_post_id] => 32 ) Post name = Trabalho 1 - (ICA)
Upload dir
Array ( [path] => /var/www/wordpress/wp-content/uploads/2014/07 [url] => http://www.erloncruz.com.br/wp-content/uploads/2014/07 [subdir] => /2014/07 [basedir] => /var/www/wordpress/wp-content/uploads [baseurl] => http://www.erloncruz.com.br/wp-content/uploads [error] => ) Getting attacments to atta 121
Array ( [width] => 940 [height] => 168 [file] => 2014/07/banner1.png [sizes] => Array ( [thumbnail] => Array ( [file] => banner1-150x150.png [width] => 150 [height] => 150 [mime-type] => image/png ) [medium] => Array ( [file] => banner1-300x53.png [width] => 300 [height] => 53 [mime-type] => image/png ) ) [image_meta] => Array ( [aperture] => 0 [credit] => [camera] => [caption] => [created_timestamp] => 0 [copyright] => [focal_length] => 0 [iso] => 0 [shutter_speed] => 0 [title] => ) )
Copying '/var/www/wordpress/wp-content/uploads/2014/07/banner1.png' to '/exports/data/32/123456.png'
Notice: Array to string conversion in /var/www/wordpress/wp-content/plugins/frontend-uploader/lib/php/functions.php on line 312
FUNCTION UPLOAD RESULT:
layout=image
result=ArrayArray ( [post_ID] => 32 [post_title] => Erlon Cruz [ra] => 123456 [action] => upload_ugc [form_layout] => image [fu_nonce] => d71734168a [_wp_http_referer] => /?p=32 [ff] => f3c01b8520a3bdaf1f0141dd2b20f488 [form_post_id] => 32 )
Warning: Cannot modify header information - headers already sent in /var/www/wordpress/wp-includes/pluggable.php on line 1121
来源：https://gist.github.com/sombrafam/c3bea65068e4c1b3b039
pdf上传日志：
FUNCTION AFTER UPLOAD:
attachment_ids=Array ( [0] => 122 )
result=1
post_id=32Array ( [post_ID] => 32 [post_title] => Erlon Cruz [ra] => 123456 [action] => upload_ugc [form_layout] => image [fu_nonce] => d71734168a [_wp_http_referer] => /?p=32 [ff] => f3c01b8520a3bdaf1f0141dd2b20f488 [form_post_id] => 32 ) Post name = Trabalho 1 - (ICA)
Upload dir
Array ( [path] => /var/www/wordpress/wp-content/uploads/2014/07 [url] => http://www.erloncruz.com.br/wp-content/uploads/2014/07 [subdir] => /2014/07 [basedir] => /var/www/wordpress/wp-content/uploads [baseurl] => http://www.erloncruz.com.br/wp-content/uploads [error] => ) Getting attacments to atta 122
Warning: Illegal string offset 'file' in /var/www/wordpress/wp-content/plugins/frontend-uploader/lib/php/functions.php on line 285
Notice: Uninitialized string offset: 0 in /var/www/wordpress/wp-content/plugins/frontend-uploader/lib/php/functions.php on line 285
Copying '/var/www/wordpress/wp-content/uploads/' to '/exports/data/32/123456.'
Warning: copy(): The first argument to copy() function cannot be a directory in /var/www/wordpress/wp-content/plugins/frontend-uploader/lib/php/functions.php on line 302
Notice: Array to string conversion in /var/www/wordpress/wp-content/plugins/frontend-uploader/lib/php/functions.php on line 312
FUNCTION UPLOAD RESULT:
layout=image
result=ArrayArray ( [post_ID] => 32 [post_title] => Erlon Cruz [ra] => 123456 [action] => upload_ugc [form_layout] => image [fu_nonce] => d71734168a [_wp_http_referer] => /?p=32 [ff] => f3c01b8520a3bdaf1f0141dd2b20f488 [form_post_id] => 32 )
Warning: Cannot modify header information - headers already sent in /var/www/wordpress/wp-includes/pluggable.php on line 1121
答案 0 :(得分：0)
我刚刚在我的开发环境中测试过，并没有在PDF上提取数据。我知道这并不是你想要听到的答案，但看起来这就是预期的功能。