## Why is this an issue?

Dependency injection is a software design pattern in which one or more dependencies (or services) are injected, or passed by reference, into a dependent object (or client) and are made part of the client’s state. The pattern separates the creation of a client’s dependencies from its own behavior, which allows program designs to be loosely coupled and to follow the dependency inversion and single responsibility principles.

### Noncompliant code example

    class SomeClass {

      public function __construct() {
        $this->object = new SomeOtherClass();  // Noncompliant
      }
    }

### Compliant solution

    class SomeClass {

      public function __construct(SomeOtherClass $object) {
        $this->object = $object;
      }
    }