Class Object
Object is the ultimate ancestor of all instantiable classes.
It defines some handful methods and enhances object core of PHP:
- access to undeclared members throws exceptions
- support for conventional properties with getters and setters
- support for event raising functionality
- ability to add new methods to class (extension methods)
Properties is a syntactic sugar which allows access public getter and setter methods as normal object variables. A property is defined by a getter method and optional setter method (no setter method means read-only property).
$val = $obj->label; // equivalent to $val = $obj->getLabel(); $obj->label = 'Nette'; // equivalent to $obj->setLabel('Nette');
Property names are case-sensitive, and they are written in the camelCaps or PascalCaps.
Event functionality is provided by declaration of property named ‚on{Something}‘ Multiple handlers are allowed.
public $onClick; // declaration in class $this->onClick[] = 'callback'; // attaching event handler if (!empty($this->onClick)) ... // are there any handlers? $this->onClick($sender, $arg); // raises the event with arguments
Adding method to class (i.e. to all instances) works similar to JavaScript prototype property. The syntax for adding a new method is:
MyClass::extensionMethod('newMethod', create_function('MyClass $obj, $arg, ...', ' ... ')); $obj = new MyClass; $obj->newMethod($x);
Direct Known Subclasses
Annotation, Application, AutoLoader, Cache, CachingHelper, Callback, CliRouter, Component, Configurator, ConventionalRenderer, DebugPanel, DownloadResponse, DummyStorage, FileJournal, FileStorage, Finder, FormGroup, ForwardingResponse, FreezableObject, Html, HttpContext, HttpRequest, HttpResponse, HttpUploadedFile, Image, JsonResponse, LatteFilter, LatteMacros, Link, MailMimePart, MemcachedStorage, MemoryStorage, NeonParser, Paginator, Permission, RedirectingResponse, RenderResponse, Route, Rule, Rules, SendmailMailer, Session, SessionNamespace, SimpleAuthenticator, SimpleRouter, SmtpMailer, SnippetHelper, SqliteJournal, Template, Tokenizer, User
public
ClassReflection
|
#
getReflection(
)
Access to reflection. Access to reflection. |
public
mixed
|
#
__call(
string
$name,
array
$args
)
Call to undefined method. Call to undefined method. Parameters$name string method name$args array argumentsThrows |
public static
mixed
|
#
__callStatic(
string
$name,
array
$args
)
Call to undefined static method. Call to undefined static method. Parameters$name string method name (in lower case!)$args array argumentsThrows |
public static
mixed
|
#
extensionMethod(
string
$name,
mixed
$callback = NULL
)
Adding method to class. Adding method to class. Parameters$name string method name$callback mixed callback or closure |
public
mixed
&
|
#
__get(
string
$name
)
Returns property value. Do not call directly. Returns property value. Do not call directly. Parameters$name string property nameReturnsmixed property value
Throws
MemberAccessException if the property is not defined.
|
public
void
|
#
__set(
string
$name,
mixed
$value
)
Sets value of a property. Do not call directly. Sets value of a property. Do not call directly. Parameters$name string property name$value mixed property valueThrows
MemberAccessException if the property is not defined or is read-only
|
public
bool
|
#
__isset(
string
$name
)
Is property defined? Is property defined? Parameters$name string property name |
public
void
|
#
__unset(
string
$name
)
Access to undeclared property. |