What is the significance of determining the instance ID of an object in PHP?

Determining the instance ID of an object in PHP is significant because it allows you to uniquely identify and reference a specific instance of a class. This can be useful when you need to keep track of multiple instances of the same class or when you want to differentiate between different objects. Additionally, knowing the instance ID can help you debug and troubleshoot your code more effectively. 

<?php
class MyClass {
    public function __construct() {
        echo "Instance ID: " . spl_object_id($this) . "\n";
    }
}

$obj1 = new MyClass();
$obj2 = new MyClass();
```
Output:
```
Instance ID: 1
Instance ID: 2

Keywords

instance ID object PHP significance determination

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