Installing PHP PDO Informix on RHEL/CentOS

When I install PHP, I realized I applied the following command.
$ yum install php php-mcrypt php-cli php-gd php-curl php-mysql php-ldap php-zip php-fileinfo

On a CentOS, Red Hat Enterprise Linux or Fedora machine and their derivitives, this is a simple as running this command, either using sudo or as the root user:
$ yum install php-pear
The pecl command can then be found at /usr/bin/pecl. On other Linux distributions it should be a similar process.

It doesn’t mean you’re not read to compile. Then again, here’s the issue.
$ yum install php-devel

1) download last version of PDO
$ mkdir pdo
$ cd pdo
$ wget http://pecl.php.net/get/PDO_INFORMIX-1.3.3.tgz

2) uncompress
$ tar zxf PDO_INFORMIX-1.3.3.tgz
$ cd PDO_INFORMIX-1.3.3/

3) set your INFORMIXDIR
$ export INFORMIXDIR=/opt/IBM/informix/4.10

3) execute phpize
$ phpize
Configuring for:
PHP Api Version: 20090626
Zend Module Api No: 20090626
Zend Extension Api No: 220090626
configure.in:3: warning: prefer named diversions
configure.in:3: warning: prefer named diversions

3) execute the ./configure
$ ./configure
configure: loading site script /usr/share/site/x86_64-unknown-linux-gnu
checking for grep that handles long lines and -e… /usr/bin/grep
checking for egrep… /usr/bin/grep -E
checking for a sed that does not truncate output… /usr/bin/sed
checking for gcc… gcc

Add a module file under
$ cd /etc/php.d
$ vi 30-pdo_informix.ini
(Prefix number is optional)
And add the line:
extension=pdo_informix.so

Restart Apache server.