How to solve thinkphp new self() error problem

The followingthinkphp frameworkThe tutorial column will introduce to you how to solve the thinkphp new self() error problem. I hope it will be helpful to friends in need!

Specific problem description:

public function t2()  
{  
  
  $receiver = new self();  
 
  
}

Framework thinkphp6

Solution:

The error message is already obvious: __construct() is missing parameters. The code you posted does not pass in $app. I have not used TP6, but in a framework like this, the method of obtaining an object is When using a container, it will automatically inject dependencies (that is, automatically instantiate $app). If you use new, dependencies will not be injected.

So when using the container, you can do this: $receiver = invoke('xxx');

When using the new method, you can do this:

$app = new App();
$receiver = new Receiver($app);

For details, please refer to the documentation of TP6: https://www.kancloud.cn/manual/thinkphp6_0/1037489

Recommended: "The latest 10 thinkphp video tutorials"

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