Zend Framework
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Zend_Form_Decorator_Callback
Execute an arbitrary callback to decorate an element. Callbacks should take three arguments, $content, $element, and $options:
function mycallback($content, $element, array $options) { }
and should return a string. ($options are whatever options were provided to the decorator.)
To specify a callback, pass a valid callback as the 'callback' option.
Callback results will be either appended, prepended, or replace the provided content. To replace the content, specify a placement of boolean false; defaults to append content.

getCallback(
)
:
null|string|array
Get registered callback
If not previously registered, checks to see if it exists in registered options.
Type | Description |
---|---|
null|string|array |

render(
string $content
)
:
string
Render
If no callback registered, returns callback. Otherwise, gets return value of callback and either appends, prepends, or replaces passed in content.
Name | Type | Description |
---|---|---|
$content | string |
Type | Description |
---|---|
string |

setCallback(
callback $callback
)
:
\Zend_Form_Decorator_Callback
Set callback
Name | Type | Description |
---|---|---|
$callback | callback |
Type | Description |
---|---|
\Zend_Form_Decorator_Callback |
Exception | Description |
---|---|
\Zend_Form_Exception |