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 problem is with the related libraries used by php_pgsql.dll - like libpq.dll, the OpenSLL ones etc. You need to find them (from the zip distribution of Postgres, from an installed psqlODBC driver etc.) and put them in a folder which is in the PATH. As for the list of all DLLs - use MS Dependency Walker (depends.exe).

Another important bit - Apache (if you use Apache that is) has its own set of OpenSSL DLLs. Replace or just rename those so to not clash with those from the Postgres distribution.