Informix Functions (PDO_INFORMIX)


PDO_INFORMIX is a driver that implements the PHP Data Objects (PDO) interface to enable access from PHP to Informix databases.


To build the PDO_INFORMIX extension, the Informix Client SDK 2.81 UC1 or higher must be installed on the same system as PHP. The Informix Client SDK is available from the » IBM Informix Support Site.

PDO_INFORMIX is a » PECL extension, so follow the instructions in Installation der PECL-Erweiterungen to install the PDO_INFORMIX extension. Issue the configure command to point to the location of the Informix Client SDK header files and libraries as follows:

   bash$ ./configure --with-pdo-informix=/path/to/SDK[,shared]
The configure command defaults to the value of the INFORMIXDIR environment variable.

Scrollable cursors

PDO_INFORMIX supports scrollable cursors; however, they are not enabled by default. To enable scrollable cursor support, you must either set ENABLESCROLLABLECURSORS=1 in the corresponding ODBC connection settings in odbc.ini or pass the EnableScrollableCursors=1 clause in the DSN connection string.


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User Contributed Notes 1 note

Arie De Derde
2 years ago
Informix PDO needs the INFORMIXDIR system variable available to the script running under the webserver, in my case apache 2.4.

Using setenv did not work, so I added in the systemd startup script /lib/systemd/system/apache2.service the following:


in the [Service] section.

Of course, the installation directory of your informix libraries may be different than /opt/Informix_Software_Bundle....
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