How can class_alias() be used to create references to classes in PHP?

When working with classes in PHP, sometimes it can be useful to create aliases or references to those classes. This can be achieved using the `class_alias()` function, which allows you to create an alias for a class that can be used interchangeably with the original class name. 

// Define a class
class OriginalClass {
    public function hello() {
        echo "Hello from OriginalClass!";
    }
}

// Create an alias for OriginalClass
class_alias('OriginalClass', 'AliasClass');

// Instantiate the original class
$original = new OriginalClass();
$original->hello();

// Instantiate the alias class
$alias = new AliasClass();
$alias->hello();

Keywords

class_alias references classes PHP usage

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