Filters the parameters for the attachment thumbnail creation.

$image_attachment array

An array of parameters to create the thumbnail.

$metadata array

Current attachment metadata.

$uploaded array

Information about the newly-uploaded file.

• filestring
  Filename of the newly-uploaded file.
• urlstring
  URL of the uploaded file.
• typestring
  File type.

File: wp-admin/includes/image.php. View all references

$image_attachment = apply_filters( 'attachment_thumbnail_args', $image_attachment, $metadata, $uploaded );