PHP startup mongo: Unable to initialize module
dll, installation, mongodb, php, xampp
Solution
It looks like you're trying to install an extension compiled for PHP 5.3 with PHP 5.4; the module API version needs to match the version of PHP.
If you download the precompiled MongoDB PHP driver from Github (eg. `php_mongo-1.2.12.zip` is the current stable version) it includes DLLs for multiple PHP versions (eg 5.2, 5.3, and 5.4). You need to copy the correct DLL for your system and rename it php_mongo.dll.
You can determine the required version from the `phpinfo()` output on your system (or `php -i` from a command line). Check the value for "Zend Extension Build".
For example:
Zend Extension Build => API220100525,NTS,VC9
.. would indicate you should use the NTS (Non-threadsafe) DLL.
On 64-bit Windows, that would mean copying `php_mongo-1.2.12-5.4-vc9-nts-x86_64.dll` to `php_mongo.dll` in your PHP extension directory.
Problem
I am currently Using xampp for PHP. I installed *mongo_db(1.8.5)* in my system and also installed xampp-1.8.1-VC9 in my system. In order to configure PHP for mongoDB, I have downloaded *php_mongo.dll*(tried both `VC9 thread safe` and `non-thread safe`) and pasted the .dll file in the '../php/ext' directory and also added `extension=php_mongo.dll` in the php.ini file. Now when I try to start the apache in xampp it shows the following display eventhough apache is getting started. ``` PHP startup mongo: Unable to initialize module Module compiled with module API : 20090626 PHP compiled with module API : 20100525 These options need to match. ``` Also my .php code to connect Mongo is not working. This means there is something wrong somewhere. Where I am going wrong. Any help would be appreciated.