scheduler wp

functions.php

add_action('init', 'apiSynchronization_activation');
function apiSynchronization_activation(){
    if ( !wp_next_scheduled( 'apiSynchronization' ) ) {
		  wp_schedule_event( time(), 'twicedaily', 'apiSynchronization');
    }
}
add_action('apiSynchronization', 'apiSync', 100);

function apiSync()
{
  //func
}