Create collapsing panel.
opencollapsebody( string $title, string $unique_id, string $grouping_id [, bool $active, string $class ] ) : string
$title (string) (Required) Panel title.
$unique_id (string) (Required) Panel ID.
$grouping_id (string) (Required) Parent's accordion ID.
$active (bool) (Optional) Panel state. Default value: false
$class (string) (Optional) Panel CSS class. Default value: ''
(string)
$collapse_id = 'test-group';
echo opencollapse($collapse_id);
echo opencollapsebody('Test 1', 'panel1', $collapse_id);
echo 'Content goes here';
echo closecollapsebody();
echo opencollapsebody('Test 2', 'panel2', $collapse_id, true); // this panel will be open
echo 'Content goes here';
echo closecollapsebody();
echo closecollapse();