在使用Arzoo International Flight API进行了一些挣扎之后，我终于找到了解决方案，并且代码对我来说绝对有效。这是完整的工作代码：
//Store your XML Request in a variable
$input_xml = '<AvailRequest>
<Trip>ONE</Trip>
<Origin>BOM</Origin>
<Destination>JFK</Destination>
<DepartDate>2013-09-15</DepartDate>
<ReturnDate>2013-09-16</ReturnDate>
<AdultPax>1</AdultPax>
<ChildPax>0</ChildPax>
<InfantPax>0</InfantPax>
<Currency>INR</Currency>
<PreferredClass>E</PreferredClass>
<Eticket>true</Eticket>
<Clientid>777ClientID</Clientid>
<Clientpassword>*Your API Password</Clientpassword>
<Clienttype>ArzooINTLWS1.0</Clienttype>
<PreferredAirline></PreferredAirline>
</AvailRequest>';
现在，我在上面的curl_setopt声明中做了一些更改，如下所示：
$url = "http://59.162.33.102:9301/Avalability";
//setting the curl parameters.
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
// Following line is compulsary to add as it is:
curl_setopt($ch, CURLOPT_POSTFIELDS,
"xmlRequest=" . $input_xml);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 300);
$data = curl_exec($ch);
curl_close($ch);
//convert the XML result into array
$array_data = json_decode(json_encode(simplexml_load_string($data)), true);
print_r('<pre>');
print_r($array_data);
print_r('</pre>');
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