parse cURL response in PHP using preg_match() not working

Question

I have cURL response in PHP like this, and I want only get the <a:RefNo>A1231640000001</a:RefNo> content only. I have tried simpleXML() but I failed, I use also preg_match() but I'm having a hard time..

Answer 1

Firstly, your XML have a error in this line, because your open tag a:Signature is without >

<a:SignatureJJqwH0QlPO9QQ/f9FT4G8q+I/zdIILLtxETLgrAZuolVCgqIdhNxuw3xgusq1HqxcGG6TZZIkwlylgI3VbWLJQ==</a:Signature>

Verify if is it just a typo or if your WebService is sending the response with this error.

Next, avoid to use regex to parse XML in this level (Let the core do it for you ;-)). Here a example of using DOMDocument to parse your XML (corrected):

    $dom = new DOMDocument();
    $dom->loadXML($xml);

    ///getting the Signatute tag and Partner RefNo
    $signature = $dom->getElementsByTagNameNS('http://domain.com','Signature');
    $partner = $dom->getElementsByTagNameNS('http://domain.com','PartnerRefNo');
    print_r ($signature->item(0)->nodeValue);
    print_r ("\n\n");
    print_r ($partner->item(0)->nodeValue);

The result is:

JJqwH0QlPO9QQ/f9FT4G8q+I/zdIILLtxETLgrAZuolVCgqIdhNxuw3xgusq1HqxcGG6TZZIkwlylgI3VbWLJQ==

A1231640000001

OBS: To deal with SOAP WebSErvices, prefer to use the SoapClient. Use cURL only as a last option.