Action Hook: This action is documented in lib/form/class-input.php
Action Hook: This action is documented in lib/form/class-input.php
Action Hook: This action is documented in lib/form/class-input.php
Action Hook: This action is documented in lib/form/class-input.php
Action Hook: This action is documented in lib/form/class-input.php
Action Hook: This action is documented in lib/form/class-input.php
Action Hook: This action is documented in lib/form/class-input.php
Action Hook: This action is documented in lib/form/class-input.php
Method: Return url of all uploaded files.
Method: Upload file and store it in temporary directory.