WordPress at Your Fingertips
filter is not described

wp_check_filetype_and_ext filter-hook . WP 3.0.0

Filters the "real" file type of the given file.


add_filter( 'wp_check_filetype_and_ext', 'filter_function_name_6139', 10, 5 );
function filter_function_name_6139( $wp_check_filetype_and_ext, $file, $filename, $mimes, $real_mime ){
	// filter...

	return $wp_check_filetype_and_ext;

Values for the extension, mime type, and corrected filename.

  • ext(string|false)
    File extension, or false if the file doesn't match a mime type.

  • type(string|false)
    File mime type, or false if the file doesn't match a mime type.

  • proper_filename(string|false)
    File name with its correct extension, or false if it cannot be determined.
Full path to the file.
The name of the file (may differ from $file due to $file being in a tmp directory).
Array of mime types keyed by their file extension regex.
The actual mime type or false if the type cannot be determined.


Since 3.0.0 Introduced.
Since 5.1.0 The $real_mime parameter was added.

Where the hook is called

wp-includes/functions.php 3166
return apply_filters( 'wp_check_filetype_and_ext', compact( 'ext', 'type', 'proper_filename' ), $file, $filename, $mimes, $real_mime );

Where in WP core the hook is used WordPress

Usage not found.