PHP can not create dirs with chmod 755

Hello,
I have a server running php 5.2.4 with CGI as Server API and suexec, but scripts cant create dirs in php with chmod 755. When I use mkdir("/home/user/public_html/$dirname", 0755); it creates the dir with chmod 744. Why?

I can change later this chmod to 755 in php with the chmod function. But why my server doesnt allow the directory to be created as 755? Where can I configure it?

Let me clarify my problem:

Script 1 (Should create a dir with chmod 755. But creates it with chmod 744.):
<?
//some code
mkdir("/home/user/public_html/$dirname", 0755); //Create with chmod 744 ;/ That´s not what I want
?>

Script 2 (Works fine):
<?
//some code
mkdir("/home/user/public_html/$dirname", 0755); // Creates with 744 ;/ That´s not what I want
chmod ("/home/user/public_html/$dirname", 0755); // Correct this weird bug
?>

Script 3 (works fine also):
<?php
//some code
umask(0022);
mkdir("/home/linuxsvr/public_html/$dirname", 0755); //Create with chmod 755 ;D
?>


m1k33

 

Thanks. When I tried it in php (<? echo umask(); ?> i received 27. Should I change it to 0022 as default? Where can I change it?

By the way, if it is 27, if I understood it correctly, shouldn´t the new dir have chmod 750? If so, why do they fave 744?