/**
* Supress
*
* Supresses a UPC string based on 4 conditional options.
*
* @param string $upc 12-Digit UPC to Suppress
* @throws UpcException If the UPC is less than or more than 12 digits
* @return Returns the 6, 7 or 8 digit suppressed UPC-E code
*/
public static function suppress($upc)
{
$conditionA = UpcESupressor::suppressConditionA($upc);
if ($conditionA !== false) {
return $conditionA;
}
$conditionB = UpcESupressor::suppressConditionB($upc);
if ($conditionA !== false) {
return $conditionB;
}
$conditionC = UpcESupressor::suppressConditionC($upc);
if ($conditionA !== false) {
return $conditionC;
}
$conditionD = UpcESupressor::suppressConditionD($upc);
if ($conditionA !== false) {
return $conditionD;
}
return false;
}
