Nested input sequences with PHP5 SOAP

Imagine you have a WebService that defines in its WSDL file the following input structure:

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<xsd:element name="Z_CATSIF_UPDATE_HOURS>

<xsd:complexType>

<xsd:all>

[...]

<xsd:element name="DATA">

<xsd:complexType>

<xsd:sequence>

<xsd:element name="item" type="ZCO_CATSIF_COMM" minOccurs="0" maxOccurs="unbounded" />

</xsd:sequence>

</xsd:complexType>

</xsd:element>

</xsd:complexType>

</xsd:element>

<xsd:complexType name="ZCO_CATSIF_COMM">

<xsd:sequence>

<xsd:element name="ELEM1" minOccurs="0">

<xsd:simpleType>

<xsd:restriction base="xsd:string">

<xsd:maxLength value="6" />

</xsd:restriction>

</xsd:simpleType>

</xsd:element>

[...]

</xsd:sequence>

</xsd:ComplexType>

<wsdl:message name="rfc.Z_CATSIF_UPDATE_HOURS.Input">

<wsdl:part name="parameters" element="rfc:Z_CATSIF_UPDATE_HOURS" />

</wsdl:message>

<wsdl:message name="rfc.Z_CATSIF_UPDATE_HOURS.Output">

<wsdl:part name="parameters" element="rfc:Z_CATSIF_UPDATE_HOURS.Response" />

</wsdl:message>

<wsdl:portType name="UpdateHours">

<wsdl:operation name="UpdateHours">

<wsdl:input message="p1:rfc.Z_CATSIF_UPDATE_HOURS.Input" />

<wsdl:output message="p1:rfc.Z_CATSIF_UPDATE_HOURS.Output" />

</wsdl:operation>

</wsdl:portType>

<xsd:element name="Z_CATSIF_UPDATE_HOURS> <xsd:complexType> <xsd:all> [...] <xsd:element name="DATA"> <xsd:complexType> <xsd:sequence> <xsd:element name="item" type="ZCO_CATSIF_COMM" minOccurs="0" maxOccurs="unbounded" /> </xsd:sequence> </xsd:complexType> </xsd:element> </xsd:complexType> </xsd:element> <xsd:complexType name="ZCO_CATSIF_COMM"> <xsd:sequence> <xsd:element name="ELEM1" minOccurs="0"> <xsd:simpleType> <xsd:restriction base="xsd:string"> <xsd:maxLength value="6" /> </xsd:restriction> </xsd:simpleType> </xsd:element> [...] </xsd:sequence> </xsd:ComplexType> <wsdl:message name="rfc.Z_CATSIF_UPDATE_HOURS.Input"> <wsdl:part name="parameters" element="rfc:Z_CATSIF_UPDATE_HOURS" /> </wsdl:message> <wsdl:message name="rfc.Z_CATSIF_UPDATE_HOURS.Output"> <wsdl:part name="parameters" element="rfc:Z_CATSIF_UPDATE_HOURS.Response" /> </wsdl:message> <wsdl:portType name="UpdateHours"> <wsdl:operation name="UpdateHours"> <wsdl:input message="p1:rfc.Z_CATSIF_UPDATE_HOURS.Input" /> <wsdl:output message="p1:rfc.Z_CATSIF_UPDATE_HOURS.Output" /> </wsdl:operation> </wsdl:portType>

           <xsd:element name="Z_CATSIF_UPDATE_HOURS>
                <xsd:complexType>
                    <xsd:all>
                        [...]
                        <xsd:element name="DATA">
                            <xsd:complexType>
                                <xsd:sequence>
                                    <xsd:element name="item" type="ZCO_CATSIF_COMM" minOccurs="0" maxOccurs="unbounded" />
                                </xsd:sequence>
                            </xsd:complexType>
                        </xsd:element>
               </xsd:complexType>
           </xsd:element>
           <xsd:complexType name="ZCO_CATSIF_COMM">
                <xsd:sequence>
                    <xsd:element name="ELEM1" minOccurs="0">
                        <xsd:simpleType>
                            <xsd:restriction base="xsd:string">
                                <xsd:maxLength value="6" />
                            </xsd:restriction>
                        </xsd:simpleType>
                    </xsd:element>
                    [...]
                </xsd:sequence>
          </xsd:ComplexType>
    <wsdl:message name="rfc.Z_CATSIF_UPDATE_HOURS.Input">
        <wsdl:part name="parameters" element="rfc:Z_CATSIF_UPDATE_HOURS" />
    </wsdl:message>
    <wsdl:message name="rfc.Z_CATSIF_UPDATE_HOURS.Output">
        <wsdl:part name="parameters" element="rfc:Z_CATSIF_UPDATE_HOURS.Response" />
    </wsdl:message>
    <wsdl:portType name="UpdateHours">
        <wsdl:operation name="UpdateHours">
            <wsdl:input message="p1:rfc.Z_CATSIF_UPDATE_HOURS.Input" />
            <wsdl:output message="p1:rfc.Z_CATSIF_UPDATE_HOURS.Output" />
        </wsdl:operation>
    </wsdl:portType>

This is a part of the WSDL definition of an SAP XI web service. As you can see, the WSDL expects the input data in the DATA element which is a folded „item“ sequence containing the complex type ZCO_CATSIF_COMM. So we have a folded structure… in order to have PHP5’s SOAP generate the correct XML code, we use the following:

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$obj = new ZCO_CATSIF_COMM($data);

$var = new SoapVar(new item($obj), SOAP_ENC_OBJECT, 'ZCO_CATSIF_COMM', 'urn:sap-com:document:sap:rfc:functions');

$caller_array = array(

'PROJECT_ID' => $project_id,

'DATA' => $var

);

$response = $soap_client->UpdateHours($caller_array);

$obj = new ZCO_CATSIF_COMM($data); $var = new SoapVar(new item($obj), SOAP_ENC_OBJECT, 'ZCO_CATSIF_COMM', 'urn:sap-com:document:sap:rfc:functions'); $caller_array = array( 'PROJECT_ID' => $project_id, 'DATA' => $var ); $response = $soap_client->UpdateHours($caller_array);

$obj = new ZCO_CATSIF_COMM($data);

$var = new SoapVar(new item($obj), SOAP_ENC_OBJECT, 'ZCO_CATSIF_COMM', 'urn:sap-com:document:sap:rfc:functions');

$caller_array = array(

  'PROJECT_ID' => $project_id,

  'DATA' => $var

);

$response = $soap_client->UpdateHours($caller_array);

 

So you see that we have two classes which do nothing than creating the corresponding properties that are defined in the WSDL complex types:

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class ZCO_CATSIF_COMM {

public $ELEM1;

function ZCO_CATSIF_COMM($data) {

$this->ELEM1 = $data['ELEM1'];

}

}

class item {

var $item;

function item($obj) {

$this->item = $obj;

}

}

class ZCO_CATSIF_COMM { public $ELEM1; function ZCO_CATSIF_COMM($data) { $this->ELEM1 = $data['ELEM1']; } } class item { var $item; function item($obj) { $this->item = $obj; } }

class ZCO_CATSIF_COMM {
    public $ELEM1;

    function ZCO_CATSIF_COMM($data) {
      $this->ELEM1 = $data['ELEM1'];
    }
}

class item {
    var $item;

    function item($obj) {
        $this->item = $obj;
    }
}

Right after that, PHP5’s SOAP generates the correct XML code: […]<DATA><item><ELEM1>elem1data</ELEM1></item></DATA>

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