`clean_extensions()`

public static function clean_extensions( $extensions )

Returns a reindexed array of lowercase, nonempty file extensions with periods and spaces removed.

Since:

unknown
2.9.18 (Updated to support being passed a string of comma separated extensions.)

Source: common.php:4156

Parameters

Name	Type	Default	Description
`$extensions`	`array` \| `string`		The file extensions to be cleaned.