php refusing to find ssh2_connect() function

Operating System used

Windows 7 - V 6.1

Apache installed

httpd-2.2.22-win32-x86-no_ssl.msi

My httpd.conf

AddType application/x-httpd-php .php

LoadModule php5_module "X:/Program Files/PHP/php5apache2_2.dll"

Version of php installed

php-5.3.16-Win32-VC9-x86.msi

I copied the php_ssh2.dll from php_ssh2-0.11.2-5.3-nts-vc9-x86.zip uncompressed

php_ssh2-0.11.2-5.3-nts-vc9-x86.zip

to

X:\Program Files\PHP\ext\php_ssh2.dll

My php.ini

extension_dir="X:\Program Files\PHP\ext"

PHPIniDir "X:/Program Files/PHP"

[PHP_SSH2]
extension=php_ssh2.dll

Apache has been restarted after configuring php.ini with php_ssh2.dll and after copying the file php_ssh2.dll to extension_dir - error persists

Fatal error: Call to undefined function ssh2_connect() in X:\Program Files\Apache Software Foundation\Apache2.2\htdocs\index.php on line 4

code used to test

<?php
$connection = ssh2_connect("XXX.XXX.XXX.XXX", 22);

if(ssh2_auth_password($connection, "XXXXXX", "XXXXXX"))
  printf("CONNECTED");
else
  printf("ERROR");
?>

A test with phpinfo() displays the page perfectly in the browser because php was configured with the httpd.conf but the parameter extension_dir appears as

extension_dir C:\php C:\php

but this parameter was set to "X:\Program Files\PHP\ext"