PHP not loading php_pgsql.dll on Windows

Question

PHP 5.2.8 is refusing to load php_pgsql.dll, with the following error:

Warning: PHP Startup: Unable to load dynamic library \'D:\\PHP\\ext\\

Answer 1

The only time I've seen this error (and the file name and ext path were definitely correct) was when I tried using an incorrect version of the DLL ie. I used one that was compiled against a different version of PHP to the one I was running.

Make sure your version is definitely the one compiled against PHP 5.2.8.

Edit: or, the permissions on the file were set incorrectly.