How can namespaces and class constructors impact the retrieval of values from arrays in PHP?

When working with namespaces and class constructors in PHP, it's important to ensure that the correct scope is used when retrieving values from arrays within a class. If the array is not properly accessed within the class constructor due to namespace issues, it can result in errors or unexpected behavior. To solve this, make sure to properly reference the array within the class constructor using the correct scope and namespace.

namespace MyNamespace;

class MyClass {
    private $data;

    public function __construct($dataArray) {
        $this->data = $dataArray;
    }

    public function getValue($key) {
        return $this->data[$key];
    }
}

$dataArray = ['key1' => 'value1', 'key2' => 'value2'];
$myClass = new MyClass($dataArray);
echo $myClass->getValue('key1'); // Output: value1