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Stub class for backwards compatibility.

Since PHP 7 adds "null" as a reserved keyword, we can no longer have a class named that and retain PHP 7 compatibility. The original class has been renamed to "ToNull", and this class is now an extension of it. It raises an E_USER_DEPRECATED to warn users to migrate.

deprecated

 Methods

Constructor

__construct(string | array | \Traversable $typeOrOptions) 

Parameters

$typeOrOptions

stringarray\Traversable

OPTIONAL

Invoke filter as a command

__invoke(mixed $value) : mixed
Inherited

Proxies to filter()

inherited_from \Zend\Filter\AbstractFilter::__invoke()
inherited_from \Zend\Filter\ToNull::__invoke()

Parameters

$value

mixed

Exceptions

\Zend\Filter\Exception\ExceptionInterface If filtering $value is impossible

Returns

mixed

Defined by Zend\Filter\FilterInterface

filter(string $value) : string
Inherited

Returns null representation of $value, if value is empty and matches types that should be considered null.

inherited_from \Zend\Filter\ToNull::filter()

Parameters

$value

string

Exceptions

\Zend\Filter\Exception\RuntimeException If filtering $value is impossible

Returns

string

Retrieve options representing object state

getOptions() : array
Inherited

inherited_from \Zend\Filter\AbstractFilter::getOptions()
inherited_from \Zend\Filter\ToNull::getOptions()

Returns

array

Returns defined boolean types

getType() : int
Inherited

inherited_from \Zend\Filter\ToNull::getType()

Returns

int

hasPcreUnicodeSupport() 

hasPcreUnicodeSupport() : bool
Inherited

inherited_from \Zend\Filter\AbstractFilter::hasPcreUnicodeSupport()
inherited_from \Zend\Filter\ToNull::hasPcreUnicodeSupport()

Returns

bool

setOptions() 

setOptions(array | \Traversable $options) : \Zend\Filter\self
Inherited

inherited_from \Zend\Filter\AbstractFilter::setOptions()
inherited_from \Zend\Filter\ToNull::setOptions()

Parameters

$options

array\Traversable

Exceptions

\Zend\Filter\Exception\InvalidArgumentException

Returns

\Zend\Filter\self

Set boolean types

setType(int | array $type) : \Zend\Filter\self
Inherited

inherited_from \Zend\Filter\ToNull::setType()

Parameters

$type

intarray

Exceptions

\Zend\Filter\Exception\InvalidArgumentException

Returns

\Zend\Filter\self

isOptions() 

isOptions(mixed $options) : bool
Inherited

inherited_from \Zend\Filter\AbstractFilter::isOptions()
inherited_from \Zend\Filter\ToNull::isOptions()

Parameters

$options

mixed

Returns

bool

 Properties

 

$constants

$constants : array
Inherited

inherited_from \Zend\Filter\ToNull::$$constants
 

Filter options

$options : array
Inherited

inherited_from \Zend\Filter\ToNull::$$options

 Constants

 

TYPE_ALL

TYPE_ALL 
Inherited

inherited_from \Zend\Filter\ToNull::TYPE_ALL
 

TYPE_BOOLEAN

TYPE_BOOLEAN 
Inherited

inherited_from \Zend\Filter\ToNull::TYPE_BOOLEAN
 

TYPE_EMPTY_ARRAY

TYPE_EMPTY_ARRAY 
Inherited

inherited_from \Zend\Filter\ToNull::TYPE_EMPTY_ARRAY
 

TYPE_FLOAT

TYPE_FLOAT 
Inherited

inherited_from \Zend\Filter\ToNull::TYPE_FLOAT
 

TYPE_INTEGER

TYPE_INTEGER 
Inherited

inherited_from \Zend\Filter\ToNull::TYPE_INTEGER
 

TYPE_STRING

TYPE_STRING 
Inherited

inherited_from \Zend\Filter\ToNull::TYPE_STRING
 

TYPE_ZERO_STRING

TYPE_ZERO_STRING 
Inherited

inherited_from \Zend\Filter\ToNull::TYPE_ZERO_STRING