Can't use updated variables in handle function

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plugins – Can’t use updated variables in handle function

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I have some problem with the wp-background-processing that’s when I change the $url in another file using $this->process_single->url('https://anotherexample.com'); the url won’t update in handle function :/ but when I echo it in dispatch, it shows the updated url

here is my class-example-request.php file:

<?php

class WP_Example_Request extends WP_Async_Request {

    /**
     * @var string
     */
    protected $action = 'example_request';
    protected $url = "https://example.com";

    public function url($url){
        $this->url = $url;
        return $this;
    }

    public function get_url(){
        return $this->url;
    }

    public function handle() {
        $response = wp_remote_get( esc_url_raw( $this->get_url() ) );//here, the url won't update!
    }

    public function dispatch() {
        $url  = add_query_arg( $this->get_query_args(), $this->get_query_url() );
        $args = $this->get_post_args();
        echo $this->get_url(); // this echos the updated url
        return wp_remote_post( esc_url_raw( $url ), $args );
    }
}

any ideas?

asked 14 mins ago

You need to change the method use for the variable $url

public – the property or method can be accessed from everywhere. This
is default
protected – the property or method can be accessed within the class
and by classes derived from that class
private – the property or method can ONLY be accessed within the
class