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How to destruct libraries/models from CI base class? - Printable Version

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+--- Thread: How to destruct libraries/models from CI base class? (/showthread.php?tid=67564)

How to destruct libraries/models from CI base class? - Zelf - 03-09-2017

How can I destruct a library/model that has been loaded by the CI base class, from the CI base class? I want to keep the CI super object alive, but destroy a library/model that has been loaded. This is for memory reasons on a worker/consumer that runs forever.

PHP Code:
public function worker() {
    while (true) { // infinite loop. The worker never dies.
        $message = $this->getMessage();

        if (!empty($messages)) {
            $this->load->library('some_library');
            $this->load->model('some_model');

            // do something

            // destruct model and library and remove from CI super object, but keep CI super object alive.
        }
    }
} 


RE: How to destruct libraries/models from CI base class? - Zelf - 03-09-2017

This is what I came up with, if any CI developers are free to comment, please let me know why this isn't working. The issue is on a new loop after the library and model are destroyed, they do not load again. I'll get a "Call to member function on null" error.

PHP Code:
class Unloader extends CI_Loader {
    public function __construct() {
        parent::__construct();
    }

    public function ci($objects = []) {
        $CI =& get_instance();

        foreach ($objects as $object) {
            if (isset($CI->load->_ci_classes[$object])) {
                unset($CI->load->_ci_classes[$object]);
            }

            if (isset($CI->load->_ci_models[array_search($object, $CI->load->_ci_models, true)])) {
                unset($CI->load->_ci_models[array_search($object, $CI->load->_ci_models, true)]);
            }

            if (isset($CI->{$object})) {
                unset($CI->{$object});
            }
        }

        return $this;
    }
}

public function worker() {
    while (true) { // infinite loop. The worker never dies.
        $message = $this->getMessage();

        if (!empty($messages)) {
            $this->load->library('some_library');
            $this->load->model('some_model');

            // do something

            // destruct model and library and remove from CI super object, but keep CI super object alive.
            $this->unloader->ci(['some_model', 'some_library']);
        }
    }
}