PHP SOAP-ERROR: Parsing Schema: can't import schema from xsd

I am running some web services which are written using soap.

Some of the web services are running however those that try to import a local xsd are failing

<faultcode>WSDL</faultcode>
<faultstring>
    SOAP-ERROR: Parsing Schema: can't import schema from 'http://localhost/myproject/_xsd/1'
</faultstring>

The following is an extract from my wsdl

<definitions
        xmlns:wsu="http://ift.tt/Hm2joJ"
        xmlns:wsp="http://ift.tt/18dhY7h"
        xmlns:wsp1_2="http://ift.tt/Hm2joK"
        xmlns:wsam="http://ift.tt/18dhVIG"
        xmlns:soap="http://ift.tt/KIQHA2"
        xmlns:tns="http://ift.tt/1GjYE8p"
        xmlns:xsd="http://ift.tt/tphNwY"
        xmlns="http://ift.tt/LcBaVt"
        targetNamespace="http://ift.tt/1GjYE8p"
        name="PlatformControllerWSService">
<types>
    <xsd:schema>
        <xsd:import
                namespace="http://mysite/"
                schemaLocation="http://localhost/myproject/1" />
    </xsd:schema>
    <xsd:schema>
        <xsd:import
                namespace="http://somesite/"
                schemaLocation="http://localhost/myproject/_xsd/2" />
    </xsd:schema>
</types>

Loading the xsd files goes to a php function

public function _xsdAction($xsd) {
        $this->response->setHeader("Content-Type", "text/xml");

        $this->view->pick('server/_xsd' . $xsd);

        $this->view->setVars(array(
            'param1' => Server::config('param1'),
            'param2'  => Server::config('param2'),
        ));
}

Also worth mentioning is that xsd1 imports xsd2

<xs:import namespace="{{ param1 }}" schemaLocation="{{ param2 }}xsd/2"/>

I am not sure what the issue might be. Any help would be appreciated