Syntax of decoct
string decoct(int decimal)
Converts decimal to an octal (base-8) representation of it. Up to a 32-bit number, or 2,147,483,647 decimal (017777777777 octal), can be converted
Example of decoct in PHP
<?php
echo decoct(15) . "\n";
echo decoct(264);
?>
17 410