What is the significance of the order of class declarations in PHP, and how does it affect the execution of code?

The order of class declarations in PHP is significant because classes must be defined before they are used. If a class is referenced before it is declared, PHP will throw a fatal error. To avoid this issue, make sure to define classes in the correct order or use autoloading mechanisms to load classes as needed. 

<?php

// Define class A
class A {
    // Class definition
}

// Define class B
class B {
    // Class definition
}

// Use class A
$objA = new A();

// Use class B
$objB = new B();

?>

Keywords

class declarations PHP execution order code organization inheritance

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