WordPress - Cron job not executed - php

Question

I'm having some problems to schedule a custom cron job in a wordpress plugin.
I have this code inside my class and is supposed to send multiple emails to different adresses and each email will have a different subject and message.
class GreetingTicketScheduler {
public function __construct()
{
register_activation_hook(__FILE__, [$this, 'schedule_orders_forward']);
add_action('forward_orders', [$this, 'send_confirmed_orders']);
}
public function schedule_orders_forward()
{
// Schedules the event if it's NOT already scheduled.
if(!wp_next_scheduled('forward_orders')){
wp_schedule_event( time(), '5min', 'send_confirmed_orders', [], true);
}
}
public function send_confirmed_orders()
{
global $wpdb;
$table = $wpdb->prefix . 'order_codes';
//
$sql = $wpdb->prepare("SELECT * FROM $table");
//
$results = $wpdb->get_results($sql, ARRAY_A);
//
if( !empty($results) ){
//
$pdv_subject = "Morning greetings of " . date('d-m-Y', time());
//
$pdv_message_a .= "Salut!\n";
$pdv_email_a = 'mail.example#example.org';
$pdv_headers_a[] = 'Cc: mail.example#example.org';
//
$pdv_message_b .= "Ciao!\n";
$pdv_email_b = 'mail.example#example.org';
$pdv_headers_b[] = 'Cc: mail.example#example.org';
//
$pdv_message_p .= "Hi!\n";
$pdv_email_p = 'mail.example#example.org';
$pdv_headers_p[] = 'Cc: mail.example#example.org';
//
foreach( $results as $key => $val ){
if(date('d-m-Y', $val['confirmed_at']) === date('d-m-Y', time()) && $val['order_cpco'] === '6605'){
$pdv_message_a .= $val['order_file'] . "\n";
}
//
if(date('d-m-Y', $val['confirmed_at']) === date('d-m-Y', time()) && $val['order_cpco'] === '6200'){
$pdv_message_b .= $val['order_file'] . "\n";
}
//
if(date('d-m-Y', $val['confirmed_at']) === date('d-m-Y', time()) && $val['order_cpco'] === '6600' ){
$pdv_message_p .= $val['order_file'] . "\n";
}
}
//
//wp_mail( $to:string|array, $subject:string, $message:string, $headers:string|array, $attachments:string|array )
//
wp_mail($pdv_email_a, $pdv_subject, $pdv_message_a, $pdv_headers_a);
//
wp_mail($pdv_email_b, $pdv_subject, $pdv_message_b, $pdv_headers_b);
//
wp_mail($pdv_email_p, $pdv_subject, $pdv_message_p, $pdv_headaers_p);
}
}
}
In my staging envoirment I have the plugin activated but I've noticed that the emails will be not send, probably I've missed something in the code.
What I need to modify to correctly schedule the cron job every five minutes or every hour?

Answer 1

You need to use an action hook to schedule the cron job, and then call the function.
class GreetingTicketScheduler {
public function __construct()
{
add_action('wp', [$this, 'schedule_orders_forward']);
add_action('forward_orders', [$this, 'send_confirmed_orders']);
}
public function schedule_orders_forward()
{
if (!wp_next_scheduled('forward_orders')) {
wp_schedule_event(time(), 'hourly', 'forward_orders');
}
}
public function send_confirmed_orders()
{
// ... code to send emails ...
}
}