$guesser = ExtensionGuesser::getInstance();
$guesser->register(new MyCustomExtensionGuesser());

static ExtensionGuesser getInstance()

Returns the singleton instance.

Return Value

ExtensionGuesser

register(ExtensionGuesserInterface $guesser)

Registers a new extension guesser.

When guessing, this guesser is preferred over previously registered ones.

Parameters

ExtensionGuesserInterface

$guesser

string guess(string $mimeType)

Tries to guess the extension.

The mime type is passed to each registered mime type guesser in reverse order of their registration (last registered is queried first). Once a guesser returns a value that is not NULL, this method terminates and returns the value.

Parameters

string

$mimeType

The mime type

Return Value

string

The guessed extension or NULL, if none could be guessed