Database Reference
In-Depth Information
Finally, a restart of your web service is required. When using the Apache HTTPd service, you can accomplish this
using the following service command:
sudo /etc/init.d/apache2 restart
That's it! This process is a little lengthier than using PECL's automated method; however, if you are unable to
use PECL, or if you are a driver developer and interested in bug fixes, then you would want to use the manual
method instead.
Installing the PHP Driver on Windows
You have seen previously how to install MongoDB on your Windows operating system. Now let's look at how to
implement the MongoDB driver for PHP on Windows.
For Windows, there are precompiled binaries available for each release of the PHP driver for MongoDB. You can
get these binaries from the previously mentioned github website (
http://github.com
)
. The biggest challenge in this
case is choosing the correct package to install for your version of PHP (a wide variety of packages are available). If you
aren't certain which package version you need, you can use the
<? phpinfo(); ?>
command in a PHP page to learn
exactly which one suits your specific environment. We'll take a closer look at the
phpinfo()
command in the next
section.
After downloading the correct package and extracting its contents, all you need to do is copy the driver file
(called
php_mongo.dll
) to your PHP's extension directory; this enables PHP to pick it up.
Depending on your version of PHP, the extension directory may be called either
Ext
or
Extensions
. If you aren't
certain which directory it should be, you can review the PHP documentation that came with the version of PHP
installed on your system.
Once you place the driver DLL into the PHP extensions directory, you still need to tell PHP to load the driver. Do
this by altering the
php.ini
file and adding the following line in the extensions section:
extension=php_mongo.dll
When done, restart the HTTP service on your system, and you are now ready to use the MongoDB driver in PHP.
Before you start leveraging the magic of MongoDB with PHP, however, you need to confirm that the extension is
loaded correctly.
Confirming That Your PHP Installation Works
So far you've successfully installed both MongoDB and the MongoDB driver in PHP. Now it's time to do a quick check
to confirm whether the driver is being loaded correctly by PHP. PHP gives you a simple and straightforward method
to accomplish this: the
phpinfo()
command. This command shows you an extended overview of all the modules
loaded, including version numbers, compilation options, server information, OS information, and so on.
To use the
phpinfo()
command, open a text or HTML editor and type the following:
<? phpinfo(); ?>
Next, save the document in your webserver's
www
directory and call it whatever you like. For example, you
might call it
test.php
or
phpinfo.php
. Now open your browser and go to your localhost or external server (that is,
go to whatever server you are working on) and look at the page you just created. You will see a good overview of all
PHP components and all sorts of other relevant information. The thing you need to focus on here is the section that
displays your MongoDB information. This section will list the version number, port numbers, hostname, and so on
(see Figure
2-3
).
