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SCA components obtain proxies for other components or services as instance variables annotated with @reference, but this is not possible for a script that is not itself also a component. A client script which is not a component must use the SCA::getService() static method to obtain a proxy for a service, whether local or remote. The getService() method takes a URI as the argument. Typically this is the location of a local PHP script containing a component, or of a wsdl file, and is used in exactly the same way as the targets of the @binding annotations described in the previous section: that is, relative URIs are resolved against the location of the client script and not against the PHP include_path or current working directory.
For example, a script that needed to obtain proxies for the ExchangeRate and StockQuote services but was not a component would use the getService() method as follows:
Beispiel #1 Obtaining a proxy using getService
<?php
$exchange_rate = SCA::getService('../ExchangeRate/ExchangeRate.php');
$stock_quote = SCA::getService('../StockQuote/StockQuote.wsdl');
?>
Methods on services can then be called on the returned proxy, just as they can in a component.
Beispiel #2 Making calls on the proxy
<?php
$quote = $stock_quote->getQuote($ticker);
$rate = $exchange_rate->getRate($currency);
?>
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