Make an HTTP POST request with PHP curl.
<?php
// Request Yahoo! REST Web Service using HTTP POST with curl.
// requires PHP4/PHP5.
// Allows retrieval of HTTP status code for error reporting
// Author: Jason Levitt
// February 1, 2006
error_reporting(E_ALL);
// The POST URL and parameters
$request = 'http://search.yahooapis.com/ContentAnalysisService/V1/termExtraction';
$appid = 'YahooDemo';
$context = 'Italian sculptors and painters of the renaissance favored the Virgin Mary for inspiration';
$query = 'madonna';
$postargs = 'appid=' . $appid . '&context=' . urlencode($context) . '&query=' . urlencode($query);
// Get the curl session object
$session = curl_init($request);
// Set the POST options.
curl_setopt($session, CURLOPT_POST, true);
curl_setopt($session, CURLOPT_POSTFIELDS, $postargs);
curl_setopt($session, CURLOPT_HEADER, true);
curl_setopt($session, CURLOPT_RETURNTRANSFER, true);
// Do the POST and then close the session
$response = curl_exec($session);
curl_close($session);
// Get HTTP Status code from the response
$status_code = array();
preg_match('/\d\d\d/', $response, $status_code);
// Check for errors
switch($status_code[0]) {
case 200:
// Success
break;
case 503:
die('Your call to Yahoo Web Services failed and returned an HTTP status of 503. That means: Service unavailable. An internal problem prevented us from returning data to you.');
break;
case 403:
die('Your call to Yahoo Web Services failed and returned an HTTP status of 403. That means: Forbidden. You do not have permission to access this resource, or are over your rate limit.');
break;
case 400:
// You may want to fall through here and read the specific XML error
die('Your call to Yahoo Web Services failed and returned an HTTP status of 400. That means: Bad request. The parameters passed to the service did not match as expected. The exact error is returned in the XML response.');
break;
default:
die('Your call to Yahoo Web Services returned an unexpected HTTP status of:' . $status_code[0]);
}
// Get the XML from the response, bypassing the header
if (!($xml = strstr($response, '<?xml'))) {
$xml = null;
}
// Output the XML
echo htmlspecialchars($xml, ENT_QUOTES);
?>