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PHP base_convert() Function

PHP Math Reference Complete PHP Math Reference

Definition and Usage

The base_convert() function converts a number from one base to another.

Syntax

base_convert(number,frombase,tobase)

Parameter Description
number Required. Original value
frombase Required. Original base of number. Frombase has 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.
tobase Required. The base to convert to. Tobase has 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.

Example 1

Convert an octal number to a decimal number:

<?php
$oct = "0031";
$dec = base_convert($oct,8,10);
echo "$oct in octal is equal to $dec in decimal.";
?>

The output of the code above will be:

0031 in octal is equal to 25 in decimal.

Example 2

Convert an octal number to a hexadecimal number:

<?php
$oct = "364";
$hex = base_convert($oct,8,16);
echo "$oct in octal is equal to $hex in hexadecimal.";
?>

The output of the code above will be:

364 in octal is equal to f4 in hexadecimal.

PHP Math Reference Complete PHP Math Reference
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