meng-tian/php-soap-interpreter

A PHP library for interpreting SOAP messages.

2.1.0 2026-07-07 20:01 UTC

Requires

• php: ^8.2
• ext-soap: *

Requires (Dev)

• phpunit/phpunit: ^11.5

MIT

• Meng Tian

• soap

Published on Packagist.org on 2026-07-07 20:02 UTC

README

A PHP library for interpreting SOAP 1.1 and SOAP 1.2 messages. It can be used in WSDL or non-WSDL mode. The implementation is built on the top of PHP's SoapClient.

Prerequisite

PHP 8.2 or newer with ext-soap. PHP 7.x and PHP 8.0-8.1 remain available only through older releases.

Install

composer require meng-tian/php-soap-interpreter:^2.1

Usage

An Interpreter is responsible for generating SOAP request messages and translating SOAP response messages. The constructor of Interpreter class is the same as SoapClient. The first parameter is wsdl, the second parameter is an array of options.

It should be noted that not all options supported by SoapClient are supported by Interpreter. The supported options of Interpreter are: location, uri, style, use, soap_version, encoding, exceptions, classmap, typemap, cache_wsdl and features. More detailed explanations of those options can be found in SoapClient::SoapClient. The unsupported options are related to debugging or HTTP transport, which are not the intended responsibility of Interpreter.

Basic Examples

Generate SOAP request message in WSDL mode

$interpreter = new Interpreter('http://www.webservicex.net/length.asmx?WSDL');
$request = $interpreter->request(
    'ChangeLengthUnit',
    [['LengthValue'=>'1', 'fromLengthUnit'=>'Inches', 'toLengthUnit'=>'Meters']]
);

print_r($request->getSoapMessage());

Output:

<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://www.webserviceX.NET/">
<SOAP-ENV:Body><ns1:ChangeLengthUnit><ns1:LengthValue>1</ns1:LengthValue><ns1:fromLengthUnit>Inches</ns1:fromLengthUnit><ns1:toLengthUnit>Meters</ns1:toLengthUnit></ns1:ChangeLengthUnit></SOAP-ENV:Body>
</SOAP-ENV:Envelope>

Translate SOAP response message

$interpreter = new Interpreter('http://www.webservicex.net/length.asmx?WSDL');
$response = <<<EOD
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    <soap:Body>
        <ChangeLengthUnitResponse xmlns="http://www.webserviceX.NET/">
            <ChangeLengthUnitResult>0.025400000000000002</ChangeLengthUnitResult>
        </ChangeLengthUnitResponse>
    </soap:Body>
</soap:Envelope>
EOD;
$response = $interpreter->response($response, 'ChangeLengthUnit');

print_r($response);

Output:

/*
Output:
stdClass Object
(
    [ChangeLengthUnitResult] => 0.0254
)
*/

Advanced Examples

Generate SOAP request message in non-WSDL mode

// In non-WSDL mode, location and uri must be provided as they are required by SoapClient.
$interpreter = new Interpreter(null, ['location'=>'http://www.webservicex.net/length.asmx', 'uri'=>'http://www.webserviceX.NET/']);
$request = $interpreter->request(
    'ChangeLengthUnit',
    [
        new SoapParam('1', 'ns1:LengthValue'),
        new SoapParam('Inches', 'ns1:fromLengthUnit'),
        new SoapParam('Meters', 'ns1:toLengthUnit')
    ],
    ['soapaction'=>'http://www.webserviceX.NET/ChangeLengthUnit']
);

print_r($request->getSoapMessage());

Output:

<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://www.webserviceX.NET/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
<SOAP-ENV:Body><ns1:ChangeLengthUnit><ns1:LengthValue xsi:type="xsd:string">1</ns1:LengthValue><ns1:fromLengthUnit xsi:type="xsd:string">Inches</ns1:fromLengthUnit><ns1:toLengthUnit xsi:type="xsd:string">Meters</ns1:toLengthUnit></ns1:ChangeLengthUnit></SOAP-ENV:Body>
</SOAP-ENV:Envelope>

SOAP input headers

$interpreter = new Interpreter('http://www.webservicex.net/CurrencyConvertor.asmx?WSDL');
$request = $interpreter->request('ConversionRate', [['FromCurrency' => 'AFA', 'ToCurrency' => 'ALL']], null, [new SoapHeader('www.namespace.com', 'test_header', 'header_data')]);
print_r($request->getSoapMessage());

Output:

<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://www.webserviceX.NET/" xmlns:ns2="www.namespace.com">
<SOAP-ENV:Header><ns2:test_header>header_data</ns2:test_header></SOAP-ENV:Header>
<SOAP-ENV:Body><ns1:ConversionRate><ns1:FromCurrency>AFA</ns1:FromCurrency><ns1:ToCurrency>ALL</ns1:ToCurrency></ns1:ConversionRate></SOAP-ENV:Body>
</SOAP-ENV:Envelope>

Testing

composer install
vendor/bin/phpunit

Relevant

• SOAP HTTP Binding: binding SOAP messages to PSR-7 HTTP messages.
• PHP Asynchronous SOAP: asynchronous SOAP clients.

License

This library is released under MIT license.