The PHP get_class API performs a focused operation on an object or value. The examples below show its effect on actual data.
Returns the runtime class of an object.
What Is get_class in PHP?
Returns the runtime class of an object.
Syntax:
get_class(object $object = ...): stringThe method accepts the following parameters:
$object— Optional. The object whose behavior or reflected metadata is used.
Return type declared by PHP: string. The value or side effect is demonstrated in the examples below.
Example 1: Basic Usage
This example uses a small input to make the main behavior visible.
<?php
$valueObject = new class { public string $state = "ready"; };
echo get_class($valueObject);Returns the runtime class of an object.
Example 2: A Different Input
A different set of values shows the same operation in another situation.
<?php
$valueObject = new class { public string $state = "ready"; };
echo get_class($valueObject);
// The output reflects definitions in this PHP process.Anonymous class names are generated, so avoid asserting a fixed anonymous class name.
Practical Example: Applying the Feature
This example shows an application-style use of the feature, with its surrounding setup visible.
<?php
$valueObject = new class { public string $state = "ready"; };
echo get_class($valueObject);
// Use this result while deciding how to handle optional application features.The code is shown for learning. Adjust the class names, inputs and error handling to suit your application.
Important Behavior and Edge Cases
- Anonymous class names are generated, so avoid asserting a fixed anonymous class name.
- Returns the runtime class of an object.
- Observe differences in empty inputs, invalid states and optional extension availability where relevant.
Comparison With Related Approaches
| Approach | Important Difference |
|---|---|
get_class | Returns the runtime class of an object. |
| get_debug_type() | get_class() requires an object and returns a class name; get_debug_type() handles scalars and objects. |
Common Beginner Mistakes
| Mistake | Correct Approach |
|---|---|
Ignoring the documented state or precondition of get_class | Anonymous class names are generated, so avoid asserting a fixed anonymous class name. |
| Expecting a different type of result | Read the declared return type and distinguish returned values from changes to the source object. |
| Assuming a related API works identically | get_class() requires an object and returns a class name; get_debug_type() handles scalars and objects. |
Key Takeaways
- Returns the runtime class of an object.
- Anonymous class names are generated, so avoid asserting a fixed anonymous class name.
- Use the example that matches the values, runtime version and dependencies in your application.
get_class is useful when its behavior matches the data structure and lifecycle of your PHP application. Choose it with a clear understanding of its preconditions and returned values.