ajax_get_form in core/includes/ajax.inc

Gets a form submitted via #ajax during an Ajax callback.

backdrop_build_form in core/includes/form.inc

Builds and processes a form for a given form ID.

backdrop_form_submit in core/includes/form.inc

Retrieves, populates, and processes a form.

FieldAttachOtherTestCase::testFieldAttachForm in core/modules/field/tests/field.test

Test field_attach_form().

FieldAttachOtherTestCase::testFieldAttachSubmit in core/modules/field/tests/field.test

Test field_attach_submit().

FieldFormTestCase::testFieldFormAccess in core/modules/field/tests/field.test

Tests fields with no 'edit' access.

FormsElementsTableSelectFunctionalTest::formSubmitHelper in core/modules/simpletest/tests/form.test

Helper function for the option check test to submit a form while collecting errors.

FormsTestCase::testRequiredFields in core/modules/simpletest/tests/form.test

Check several empty values for required forms elements.