src/includes/classes/Core/Utils/Csrf.php
public function input(callable $callback = null): string
    {
        $_csrf = $this->create($callback);
        return '<input type="hidden" name="_csrf" value="'.$this->c::escAttr($_csrf).'" />';
    }
public function input(callable $callback = null): string
    {
        $_csrf = $this->create($callback);
        return '<input type="hidden" name="_csrf" value="'.$this->c::escAttr($_csrf).'" />';
    }
CSRF input markup.

@since 17xxxx CSRF utils.

@param callable|null $callback Callback.

@return string Hidden input field with `_csrf` token.
See also: {@link create()}