PHP Functions Essential Reference

base_convert

string base_convert(string s, int source_base, int destination_base) 

s	Original value
source_base	Original base of number
destination_base	Base to which to convert

Converts a number from one base to another.

Returns:

String representation of the converted number; FALSE on error

Description:

base_convert() returns a string representation of the number passed as the first argument. Valid values for source and destination bases can be from 2 to 36. Remember that PHP integers are signed 32-bit numbers, so the maximum value usable here is 2147483647.

Version:

PHP 3 since 3.0.6, PHP 4

See also:

bindec() 
decbin() 
dechex() 
hexdec() 
decoct() 
octdec() 

Example:

Convert a number’s base

$org = "564"; $new = base_convert($org, 8, 16); ...