Generate BelgianStructuredCommunication and check
// convert ID to StructuredCommunication
var_dump(BelgianStructuredCommunication::create("0123456789", 3));
// get ID
var_dump(BelgianStructuredCommunication::check("+++012/3456/78939+++", 1));
// get checksum
var_dump(BelgianStructuredCommunication::check("+++012/3456/78939+++", 2));
// check if valid
var_dump(BelgianStructuredCommunication::check("+++012/3456/78939+++", 3));
// of invalid...
var_dump(BelgianStructuredCommunication::check("+++912/3456/78939+++", 3));