Stdlib/CallbackHandler.php
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LICENSE
This source file is subject to the new BSD license that is bundled
with this package in the file LICENSE.txt.
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http://framework.zend.com/license/new-bsd
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- Category
- Zend
- Copyright
- Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
- License
- New BSD License
- Package
- Zend_Stdlib
\Zend_Stdlib_CallbackHandler
Package: Zend_Stdlib
Returns
Throws
CallbackHandler
A handler for a event, event, filterchain, etc. Abstracts PHP callbacks,
primarily to allow for lazy-loading and ensuring availability of default
arguments (currying).
- Category
- Zend
- Copyright
- Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
- License
- New BSD License
Properties
string|array $callbackPHP callback to invoke
Details
- Type
- string | array
bool $error = falseDid an error occur when testing the validity of the callback?
Default value
falseDetails- Type
- bool
array $metadataCallback metadata, if any
Details
- Type
- array
Methods
__construct(string | array | object $callback, $metadata = array()) : voidConstructor
Parameters
| Name | Type | Description |
|---|---|---|
| $callback | string | array | object | PHP callback |
| $metadata |
__invoke() : mixedInvoke as functor
Returns
| Type | Description |
|---|---|
| mixed |
call(array $args = array()) : mixedInvoke handler
Parameters
Returns
| Name | Type | Description |
|---|---|---|
| $args | array | Arguments to pass to callback |
| Type | Description |
|---|---|
| mixed |
errorHandler(int $errno, string $errstr) : voidError handler
Used by registerCallback() when calling is_callable() to capture engine warnings.
Parameters| Name | Type | Description |
|---|---|---|
| $errno | int | |
| $errstr | string |
getCallback() : CallableRetrieve registered callback
Returns
| Type | Description |
|---|---|
| Callable |
getMetadata() : arrayGet all callback metadata
Returns
| Type | Description |
|---|---|
| array |
getMetadatum(string $name) : mixedRetrieve a single metadatum
Parameters
Returns
| Name | Type | Description |
|---|---|---|
| $name | string |
| Type | Description |
|---|---|
| mixed |
registerCallback(Callable $callback) : voidRegisters the callback provided in the constructor
If you have pecl/weakref {@see http://pecl.php.net/weakref} installed,
this method provides additional behavior.
If a callback is a functor, or an array callback composing an object
instance, this method will pass the object to a WeakRef instance prior
to registering the callback.
Parameters| Name | Type | Description |
|---|---|---|
| $callback | Callable |
validateStringCallbackFor54(string $callback) : trueValidate a static method call
Validates that a static method call in PHP 5.4 will actually work
Parameters| Name | Type | Description |
|---|---|---|
| $callback | string |
| Type | Description |
|---|---|
| true |
| Exception | Description |
|---|---|
| \Zend_Stdlib_Exception_InvalidCallbackException | if invalid |