SOAP WebService PHP can't access extensions functions

Question

I'm coding a SOAP WebService in PHP and I encounter an issue.

This service is running on a Linux server. I have a function to connect to an Oracle database and another one to connect to a local Memcached server.

So, when I call my Oracle connections's function, SOAP returns :

Uncaught SoapFault exception: [SOAP-ENV:Server] Call to undefined function oci_connect()

But if I create a simple php file with the same Oracle function it's work fine (without SOAP)

I created a simple server/client php files juste for testing and I encounter the same issue, here's my code :

Server :

<?php
class Serveur{

    function helloWorld()
    {
        return "Hello World";
    }

    function connexionOracle()
    {
        $conn = oci_connect('XXXXX', 'XXXX', 'XXXXX');
        if($conn == false)
        {
            return "Error";
        }
        else
        {
            return "OK";
        }
    }
}
$serversoap = new SoapServer(null, array('uri' => "http://localhost/test/"));
$serversoap->setClass("Serveur");
$serversoap->handle();
?>

Client :

<?php
    error_reporting(E_ALL | E_STRICT);
    $client = new SoapClient(null, array('location' => "http://localhost/test/serveur.php",'uri'=> "http://localhost/test/"));

    print_r($client->helloWorld());
    echo "</br>";
    print_r($client->connexionOracle());
 ?>

This code returns :

Call to undefined function oci_connect()

But if I use a simple file like this one, everything is working :

$conn = connexionOracle2();
var_dump($conn);

function connexionOracle2()
{
    $db = "(DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(Host = XXXXX)(Port = XXXX)) ) (CONNECT_DATA = (SID = XXXXXX) ) )";
    return oci_connect('cartetest', 'evol', $db) or Die('Connexion Oracle impossible');
}

I don't encounter this issue on my local windows machine

Answer 1

This is the solution that worked for me :

setsebool -P httpd_can_network_connect 1

You can also disabled SELinux like this in the configuration file :

SELINUX=disabled