State::__isset()
Checks if a state returns non-null value.
Table of Contents
Description
State::__isset(string $key): bool;You won’t use this method directly, it will be executed automatically when you try to check the existence of a state using empty() or isset() language construct. This method is also compatible when you try to access a state deeply.
Example
$state = new State(['test' => 1]);
test(isset($state->test)); // Returns `true`
test(isset($state->test->asdf)); // Returns `false`State::_()
The dynamic method initiator.
State::__call()
Calls a virtual method.
State::__callStatic()
Calls a virtual method statically.
State::__construct()
The constructor.
State::__get()
Gets a state via property access.
State::__invoke()
Proxy for the current object, called as a function.
State::__isset()
Checks if a state returns non-null value.
State::__serialize()
Provides data to be serialized.
State::__set()
Sets a state via property access.
State::__toString()
Proxy for the current object, casted as a string.
State::__unserialize()
Converts the serialized data back to its object.
State::__unset()
Deletes a state via property access.
State::count()
Counts the number of states.
State::get()
Gets a state or states.
State::getIterator()
The external iterator receiver.
State::jsonSerialize()
Returns the data to be serialized as JSON.
State::let()
Deletes a state or states.
State::offsetExists()
Checks if a state with a certain key exists.
State::offsetGet()
Gets a state using its key.
State::offsetSet()
Sets a state to the specified key.
State::offsetUnset()
Deletes a state at the specified key.
State::set()
Sets a state or states.