How can the order of file execution impact the access to variables in PHP classes?

The order of file execution can impact the access to variables in PHP classes if a class is defined in one file and then used in another file before the class definition is included. To solve this issue, make sure to include the class definition file before using the class in another file. 

// File: class_definition.php
class MyClass {
    public $variable = "Hello";
}

// File: main.php
require_once 'class_definition.php';

$obj = new MyClass();
echo $obj->variable; // This will output "Hello"

Keywords

file execution variables PHP classes access impact

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