Question

How to extend zend form element to create customized currency field.

For example:

$amount = new Example_Form_Element_Currency(1234);

The out put should be like this: $1,234.00.

I want a custom helper for currency.

Answer 1

Sounds like you’re looking to apply a filter.

I don’t think there’s a built-in currency filter however it wouldn’t be difficult to create one to run the submitted value through number_format() or similar.

class My_Filter_Currency implements Zend_Filter_Interface
{
    public function filter($value)
    {
        return '$' . number_format($value, 2);
    }
}