Access Parent object PHP [duplicate]

This question already has answers here: Call to a member function on a non-object [duplicate] (8 answers) Closed 9 years ago.

I have class that ex开发者_C百科tends another class.

class TWITTER_FOLLOWERS extends TWITTER_BOT

in TWITTER_FOLLOWERS i want to acces the db object from TWITTER_BOT but i get just an error

Fatal error: Call to a member function fetch_all_array() on a non-object in /var/www/bot/inc/TWITTER_FOLLOWERS.php on line 163

On line 163 i have this code

$results = $this->db->fetch_all_array($q);

How can i access the parent object db ?

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Sounds like you haven't instantiated the $db variable in the parent class. Are you using a __construct() function in your subclass? Don't forget to call parent::__construct() in there so the function isn't "overwritten". Also, is $db a protected or public variable? It'll need to be one of the two for a subclass to be able to access it. We'll need to see more code to dig deeper.

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did you run the parent constructor? this looks like the subclass doesn't bother initializing properly (by calling the parent constructor).

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To be honest I'm not sure what you exactly want. But my guess would be that you are looking for the parent special name.