PHP base_convert() Function

The PHP base_convert() function converts a number between specified bases. It returns a string containing number represented in base to_base. The base in which number is given is specified in from_base. Both from_base and to_base 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 representing 10, b representing 11 and z representing 35. The case of the letters does not matter.

Syntax

base_convert(number, from_base, to_base)

Parameters

Return Value

Returns the number converted to base to_base.

Example:

In the example below, base_convert() function is used to convert a given number from one base to another.

<?php
//converting from decimal to binary
echo "base_convert(0, 10, 2) = "
     .base_convert(0, 10, 2)."\n";
echo "base_convert(10, 10, 2) = "
     .base_convert(10, 10, 2)."\n";

//converting from hexadecimal to binary
echo "base_convert('ff', 16, 2) = "
     .base_convert('ff', 16, 2)."\n";
echo "base_convert('1f', 16, 2) = "
     .base_convert('1f', 16, 2)."\n";

//converting from hexadecimal to octal
echo "base_convert('fff', 16, 8) = "
     .base_convert('fff', 16, 8)."\n";
echo "base_convert('1ff', 16, 8) = "
     .base_convert('1ff', 16, 8)."\n";
?>

The output of the above code will be:

base_convert(0, 10, 2) = 0
base_convert(10, 10, 2) = 1010
base_convert('ff', 16, 2) = 11111111
base_convert('1f', 16, 2) = 11111
base_convert('fff', 16, 8) = 7777
base_convert('1ff', 16, 8) = 777