(PHP 3 >= 3.0.6, PHP 4, PHP 5)
base_convert -- Convert a number between arbitrary bases
( string number, int frombase, int tobase )
Returns a string containing number
represented in base tobase. The base in
which number is given is specified in
frombase and tobase
have to be between 2 and 36, inclusive. Digits in numbers with a
base higher than 10 will be represented with the letters a-z,
with a meaning 10, b meaning 11 and z meaning 35.
Пример 1. base_convert() example
$hexadecimal = 'A37334';
echo base_convert($hexadecimal, 16, 2);
base_convert() may lose precision on large numbers
due to properties related to the internal "double" or "float" type used.
Please see the Floating point numbers
section in the manual for more specific information and limitations.