得到致命错误:调用未定义的函数pg_connect

I'm developing my first program with php. I searched a lot of forums and about 3 or 4 hours, but got nothing.

Here is my index.php code:

<html>
<head>
   <title>first program</title>
</head>
<body>
    <h1> program loaded successfully</h1>
    <?php
        echo extension_loaded('pgsql') ? 'yes':'no';
        echo pg_connect("host=localhost port=5432 dbname=test user=postgres password=root");
    ?>
</body>

When I load this page I see this:

program loaded successfully

no

Fatal error: Call to undefined function pg_connect() in D:\courses\web programing\hw2\cinema\index.php on line 9

I installed php-5.4.14-Win32-VC9-x86 on my windows and run my project with this comment:

php.exe" -S localhost:80 -t "D:\courses\web programing\hw2\cinema"

I have php.ini-development and php.ini-production in php folder and Uncommented extension=php_pgsql.dll, extension=php_pdo_pgsql.dll in both files. I'm using postgresql 9.2

So where is my mistake?

Solved It's wired but the problem was that php try to load php.ini from Windows folder and no php.ini exist there. So I copied one of my php.ini files in Windows folder and problem solved. It seems like a bug.

postgreSQL should be activates in the php.ini to activate these functions.