What is a base?: The base we are the most familiar with (our regular numeric system) is base 10. What this means is that, each 'slot' has 10 possibilities before a second digit is needed. For example we can have the digits 0-9 before needing to add a second digit. In binary, there are only two possibilities (0 or 1) before adding another digit. So, zero is 0 and one is 1, but two is written as 10, and three as 11.
Converting base: In PHP we can convert base simply using the base_convert () function. We need to specify the number, its current base, and the base we want to convert to. For example, converting 100 from base 10 to base 2 would be: base_convert (100, 10, 2)
Examples:
<?php
//Converting from base 2 and base 16 to base 10
$bi= '101101';
echo base_convert($bi, 2, 10) ;
$hex= 'A37443';
echo base_convert($hex, 16, 10) ;
?>
