This function generate a unique hardware identifier (ID) for your computer given the specified parameters ($UHID_... flags). $UHID_MB (0x00) Uses information about your motherboard. This flag is used by default regardless of whether specified or not. $UHID_BIOS (0x01) Uses information from BIOS. $UHID_CPU (0x02) Uses information about your processor(s). Note that $UHID_CPU flag reduces the function speed. $UHID_HDD (0x04) Uses information about the installed hard drives. Any change in the co