Integers in php

[dantel]

I have a very simple php code (below) that produces - in my opinion - a strange outcome,
marked in the comments of the code.

My questions are:
1. Is this a bug?
2. If not, can you point out a place in the manual where this is explained?

I would appreciate any help!

<?php
pri(01); // prints 1
pri(02); // prints 2
pri(03); // prints 3
pri(04); // prints 4
pri(05); // prints 5
pri(06); // prints 6
pri(07); // prints 7
pri(08); // prints 0 STRANGE!!
pri(09); // prints 0 STRANGE!!
pri(10); // prints 10
?>

<?php
function pri ()
{
list ($v) = func_get_args();
echo "$v\n";
}
?>

[laserlight]

My guess is that you are suffering from a problem related to integers in octal representation. Remove the leading zeroes and you'll be fine.

[dantel]

Of course,
it has occured to me that octals may something to do with it
and I also knew that you replacing 08 by 8 or by "08" works,
but I am not interested in rewriting the program so that it works,
but rather want to see documentation about it (see my two questions).

[laserlight]

The obvious place is to look up the section on integers, where it is written that "If an invalid digit is passed to octal integer (i.e. 8 or 9), the rest of the number is ignored."