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$url = "http://e4ftl01.cr.usgs.gov/ASTT/AST_L1T.003/2016.08.22/AST_L1T_00308222016003413_20160823093712_24613.hdf.xml";
$COOKIE_FILE = '<path to a file for storing cookies (optional)>';
/* Initialize the CURL command */
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_NETRC, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
//curl_setopt($ch, CURLOPT_VERBOSE, true); /* Useful for debugging */
/*
* For more efficient operation, preserve session cookies across
* executions. If cookie files cannot be used, comment out the next
* two lines and uncomment the third.
*/
curl_setopt($ch, CURLOPT_COOKIEFILE, $COOKIE_FILE);
curl_setopt($ch, CURLOPT_COOKIEJAR, $COOKIE_FILE);
//curl_setopt($ch, CURLOPT_COOKIEFILE, '');
/* Execute the request */
$result = curl_exec($ch);
$status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if( $status != 200 ) {
/* ERROR! */
}
else {
/* This contains the returned data for the URL */
echo "RESULT: $result\n";
}
|
The following example provides credentials rather than relying upon the .netrc file.
| Code Block | ||||
|---|---|---|---|---|
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$url = 'http://e4ftl01.cr.usgs.gov/ASTT/AST_L1T.003/2016.08.22/AST_L1T_00308222016003413_20160823093712_24613.hdf.xml';
$username = '<Earthdata Login username>';
$password = '<Earthdata Login password>'; /* Must be secured */
$COOKIE_FILE = '<path to a file for storing cookies (optional)>';
/* Initialize the CURL command */
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_NETRC, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
//curl_setopt($ch, CURLOPT_VERBOSE, true); /* Useful for debugging */
/*
* For more efficient operation, preserve session cookies across
* executions. If cookie files cannot be used, comment out the next
* two lines and uncomment the third.
*/
curl_setopt($ch, CURLOPT_COOKIEFILE, $COOKIE_FILE);
curl_setopt($ch, CURLOPT_COOKIEJAR, $COOKIE_FILE);
//curl_setopt($ch, CURLOPT_COOKIEFILE, '');
/* Execute the request */
$result = curl_exec($ch);
$status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
if ($status == '401' ) {
/*
* We are required to authenticate, so add in the authorization header
* and continue the request.
*/
$auth = base64_encode("$username:$password");
$headers = array("Authorization: BASIC $auth");
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
$result = curl_exec($ch);
$status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
}
curl_close($ch);
if( $status != 200 )
{
// ERROR!
}
else {
echo "RESULT: $result\n";
}
|
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