- 十進制轉二進制：使用PHP內置函數decbin()
$decimal_number = 10;
$binary_number = decbin($decimal_number);
echo $binary_number;
- 十進制轉八進制：使用PHP內置函數decoct()
$decimal_number = 10;
$octal_number = decoct($decimal_number);
echo $octal_number;
- 十進制轉十六進制：使用PHP內置函數dechex()
$decimal_number = 10;
$hexadecimal_number = dechex($decimal_number);
echo $hexadecimal_number;
- 二進制轉十進制：使用PHP內置函數bindec()
$binary_number = '1010';
$decimal_number = bindec($binary_number);
echo $decimal_number;
- 八進制轉十進制：使用PHP內置函數octdec()
$octal_number = '12';
$decimal_number = octdec($octal_number);
echo $decimal_number;
- 十六進制轉十進制：使用PHP內置函數hexdec()
$hexadecimal_number = 'a';
$decimal_number = hexdec($hexadecimal_number);
echo $decimal_number;
