With Google Apps Email Audit API trying to create a monitor that will duplicate all the letters in the user's mailbox rabbit@mydomain.com to auditor@mydomain.com. In response to receiving the error message: "Content is not allowed in prolog."
$url = 'https://apps-apis.google.com/a/feeds/compliance/audit/mail/monitor/mydomain.com/rabbit';
$txtXML = "<atom:entry xmlns:atom='http://www.w3.org/2005/Atom' xmlns:apps='http://schemas.google.com/apps/2006'>";
$txtXML .= "<apps:property name='destUserName' value='auditor'/>";
$txtXML .= "<apps:property name='endDate' value='2015-12-31 00:00'/>";
$txtXML .= "</atom:entry>";
$post_data = array( "xml" => $txtXML );
$context = stream_context_create(
array( 'http' => array(
'method' => 'POST',
'header' => 'Content-length: '. strlen( $txtXML ) . PHP_EOL .
'Content-type: application/atom+xml' . PHP_EOL .
'Authorization: Bearer ' . trim( $accessToken2v3 ) . PHP_EOL .
'',
'content' => http_build_query( $post_data )
)
)
);
$response = file_get_contents( $url, false, $context );
P.S. Prepared for the POST request parameters by examining you next documentation:
Google Apps Email Audit API Developer's Guide: https://developers.google.com/admin-sdk/email-audit/
About Authorize Requests: https: //developers.google.com/admin-sdk/email-audit/auth
Using OAuth 2.0 for Server to Server Applications: https: //developers.google.com/identity/protocols/OAuth2ServiceAccount