src/ExceptionIdentifier.php
protected function generate()
    {
        $hash = bin2hex(random_bytes(16));

        $timeHi = hexdec(substr($hash, 12, 4)) & 0x0fff;
        $timeHi &= ~(0xf000);
        $timeHi |= 4 << 12;

        $clockSeqHi = hexdec(substr($hash, 16, 2)) & 0x3f;
        $clockSeqHi &= ~(0xc0);
        $clockSeqHi |= 0x80;

        $params = [substr($hash, 0, 8), substr($hash, 8, 4), sprintf('%04x', $timeHi), sprintf('%02x', $clockSeqHi), substr($hash, 18, 2), substr($hash, 20, 12)];

        return vsprintf('%08s-%04s-%04s-%02s%02s-%012s', $params);
    }
protected function generate()
    {
        $hash = bin2hex(random_bytes(16));

        $timeHi = hexdec(substr($hash, 12, 4)) & 0x0fff;
        $timeHi &= ~(0xf000);
        $timeHi |= 4 << 12;

        $clockSeqHi = hexdec(substr($hash, 16, 2)) & 0x3f;
        $clockSeqHi &= ~(0xc0);
        $clockSeqHi |= 0x80;

        $params = [substr($hash, 0, 8), substr($hash, 8, 4), sprintf('%04x', $timeHi), sprintf('%02x', $clockSeqHi), substr($hash, 18, 2), substr($hash, 20, 12)];

        return vsprintf('%08s-%04s-%04s-%02s%02s-%012s', $params);
    }
protected function generate ( ) { $ hash = bin2hex ( random_bytes ( 16 ) ) ; $ timeHi = hexdec ( substr ( $ hash , 12 , 4 ) ) & 0x0fff ; $ timeHi &= ~ ( 0xf000 ) ; $ timeHi |= 4 << 12 ; $ clockSeqHi = hexdec ( substr ( $ hash , 16 , 2 ) ) & 0x3f ; $ clockSeqHi &= ~ ( 0xc0 ) ; $ clockSeqHi |= 0x80 ; $ params = [ substr ( $ hash , 0 , 8 ) , substr ( $ hash , 8 , 4 ) , sprintf ( '%04x' , $ timeHi ) , sprintf ( '%02x' , $ clockSeqHi ) , substr ( $ hash , 18 , 2 ) , substr ( $ hash , 20 , 12 ) ] ; return vsprintf ( '%08s-%04s-%04s-%02s%02s-%012s' , $ params ) ; }
Generate a new uuid.

We're generating uuids according to the official v4 spec.

@return string
Generate a new uuid .