PHP puts random numbers in directory names. Why?

Question

I'm trying to create a directory in PHP using mkdir () . It works but PHP puts random numbers in the end of the name:

mkdir (testdir);

creates a directory testdir511. Is there any way to fix this ?

Answer 1

You've probably used . (the concatenation thingy) instead of a comma when separating your arguments:

$ php
<?php
mkdir("test" . 655); // should be mkdir("test", 655);
?>
$ ls
test655/