- substr: documentation ( source)
- str_replace: documentation ( source)
- hexdec: documentation ( source)
<?php
$data = '0x 1121 0031';
$data = substr($data, 2); //remove the 0x prefix from the string
$data = str_replace(' ', '', $data); //remove the spaces from the string
//$data is now '11210031'
$number = hexdec($data); //convert the hexadecimal number to an integer
//$number is now 0x11210031 (hexadecimal) = 287375409 (decimal)
$nibble1 = ($number >> 28) & 0xF; //shift the number right by 28 bits (each nibble is 4 bits) and select only the last 4 bits (0xF selects all bits in the last nibble)
echo "the product number is $nibble1\n";
$nibble2 = ($number >> 24) & 0xF;
if ($nibble2 == 1) {
echo "this is a new product\n";
} else if ($nibble2 == 2) {
echo "this is a used product\n";
}