wp_schedule_event function reference

Question

I working on the wp_schedule_event recursive function. In the function, I have create a email message and it works. this function fires every 1 hour.

function do_this_hourly() {

    $to = '[email protected]';

    $subject = 'Test my one hour job';

    $message = 'you received this message ';

    mail( $to, $subject, $message, 'From: [email protected]' . "\r\n" );

}

but now, I have this external php page which needs to be refresh/load/reload every one hour without anyone loading it on the browser

$link = "http://www.example.com/path/to/link/"

header('Location: ' . $link);

Does anyone knows how to do it?

Answer 1

I think if you need to call page every hour you can do it with a simple cron (not wp_cron) and set it in your panel or via shell a string like this:

• */1 * * * wget -O - /path/to/link >/dev/null 2>&1

But if you need to do it via wp

add_action('wp', 'set_cron' );
add_action('test_scheduled', 'fn_test_scheduled');
function set_cron() {
    // Remove any scheduled event on this hook
    //wp_clear_scheduled_hook( 'exercise_reminder' );
    if (!wp_next_scheduled('test_scheduled')) {
        wp_schedule_event( gmmktime(8, 0, 0, 1, 4, 2015), 'hourly', 'test_scheduled');
    }
}
function test_scheduled() {
    $ch = curl_init();

// set URL and other appropriate options
curl_setopt($ch, CURLOPT_URL, "/path/to/link/");
curl_setopt($ch, CURLOPT_HEADER, 0);

// grab URL and pass it to the browser
curl_exec($ch);

// close cURL resource, and free up system resources
curl_close($ch);
}

In this example you need to change gmmktime with your preference

Be careful with wp cron. I suggest you to use it only if it's a real cron https://tribulant.com/blog/wordpress/replace-wordpress-cron-with-real-cron-for-site-speed/

I hope this help you. David