ParagonIE_Sodium_Core_Util::chrToInt( string $chr ): int

150    public static function chrToInt($chr)151    {152        /* Type checks: */153        if (!is_string($chr)) {154            throw new TypeError('Argument 1 must be a string, ' . gettype($chr) . ' given.');155        }156        if (self::strlen($chr) !== 1) {157            throw new SodiumException('chrToInt() expects a string that is exactly 1 character long');158        }159        /** @var array<int, int> $chunk */160        $chunk = unpack('C', $chr);161        return (int) ($chunk[1]);162    }