Retrieves the file type from the file name.

Description

You can optionally define the mime array, if needed.

Parameters

$filenamestringrequired

File name or path.

$mimesstring[]|nulloptional

Array of allowed mime types keyed by their file extension regex.
Defaults to the result of get_allowed_mime_types() .

Default:null

Return

• 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.

Source

function wp_check_filetype( $filename, $mimes = null ) {
	if ( empty( $mimes ) ) {
		$mimes = get_allowed_mime_types();
	}
	$type = false;
	$ext  = false;

	foreach ( $mimes as $ext_preg => $mime_match ) {
		$ext_preg = '!\.(' . $ext_preg . ')$!i';
		if ( preg_match( $ext_preg, $filename, $ext_matches ) ) {
			$type = $mime_match;
			$ext  = $ext_matches[1];
			break;
		}
	}

	return compact( 'ext', 'type' );
}

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