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How to have Oracle database connections in PHP 5.3.10 over Ubuntu 12.04 (Precise Pangolin) using Docker

Since keep a compilation environment for building extensions can be impossible or simply undesirable, I wrote an Docker image for it alongside a Docker Compose configuration to compile the binaries. However, the setup of this extensions are still under your responsability.

1. Preparing the source code

Clone the repository using git

$ git clone https://github.com/tassoevan/pdo-oci-extension.git

or download and unzip it. You'll be working inside the pdo-oci-extension directory now.

Unfortunatelly, the Oracle Instant Client download can't be automated due license terms. That means you must be registered in Oracle (it's free) and get the ZIP files by yourself. They are instantclient-basic-linux.x64-12.2.0.1.0.zip and instantclient-sdk-linux.x64-12.2.0.1.0.zip, and should by placed in the builder/instantclient/ directory.

2. Build the Docker image and create and run the Docker container

$ docker-compose build precise
$ docker-compose run precise

The image build command is often automatically performed during container creation, but it's interesting to perform it as an isolated step since all compilation workload is in it.

The built files oci8.so and pdo_oci.so will be under build/precise directory.

3. Install the binaries and enable the extensions

Run the following command to getting your PHP extensions directory.

$ ext_dir=`php -r 'echo ini_get("extension_dir");'`
$ echo $ext_dir

Copy the compiled binaries to it.

$ cp build/precise/oci8.so build/precise/pdo_oci.so "${ext_dir}/"

Create the configuration files for load these extensions.

$ echo 'extension=oci8.so' > /etc/php5/conf.d/oci8.ini
$ echo 'extension=pdo_oci.so' > /etc/php5/conf.d/pdo_oci.ini

Now you have all oci_* functions and the PDO oci DSN prefix available in PHP. Confirm it using running:

$ php -r 'echo "OCI8 is " . (function_exists("oci_connect") ? "on" : "off") . "\n";'
$ php -r 'echo "PDO OCI driver is " . (in_array("oci", PDO::getAvailableDrivers()) ? "on" : "off") . "\n";'