Flight PHP跨类调用函数报错Undefined variable: connector 求助

Hey there! The issue here is a simple one—you're trying to call a method on a variable that doesn't exist in the current scope, even though you've already created the instance correctly as a class property.

Let's break down what's happening in your code:

public function __construct() {
$this->connector = new deliveryServiceConnector(DOLIBARR_API_KEY,DOLIBARR_ROOT_URL,null, $this->nodeName);
$connector->testDisplayDev();
}

You've assigned the deliveryServiceConnector instance to $this->connector (a property of your client class), but when you try to call testDisplayDev(), you're using $connector—which PHP treats as a local variable that hasn't been defined anywhere in the constructor method.

The Fix #

All you need to do is use the $this-> prefix to reference the class property you just created:

public function __construct() { 
  $this->connector = new deliveryServiceConnector(DOLIBARR_API_KEY,DOLIBARR_ROOT_URL,null, $this->nodeName); 
  $this->connector->testDisplayDev(); // Use $this-> to access the class property
}

Quick Explanation #

In PHP class methods, any property belonging to the class (like the connector you set up) must be accessed with $this-> followed by the property name. Without this prefix, PHP looks for a local variable named $connector, which doesn't exist in your code—hence the "Undefined variable" error.

内容的提问来源于stack exchange，提问作者Hounaida Rekik