An anonymous class in PHP is a class that has no name and is defined and instantiated in a single expression. Anonymous classes are useful when simple, one-off objects need to be created. They can pass arguments through to their constructors, extend other classes, implement interfaces, and use traits just like a normal class can. Here’s an example of how to use an anonymous class in PHP:
$logger = new class {
public function log($msg) {
echo $msg;
}
};
$logger->log("Hello, world!");
In this example, we create an anonymous class with a single method log(). We then create an instance of the class and call the log() method to output the message “Hello, world!”.