Hi all! I have written some PHP Scrips with test queries to the factbook database, which are are well executed at my local machine (Windows, XAMPP, BaseX on localhost, Port 1984). Now, I have ported my examples to a remote server, and it seams that the query string is not accepted. For example: The query (for $node in doc("allbus")//(d:QuestionItem|d:MultipleQuestionItem) return data($node/@id)') results in the following error: Unknown command 'for'; try "help". Other queries result in Error: 0 instead of 1 commands received. We have BaseX Client running and the queries can be submitted through the linux console (> xquery for $node in doc("factbook")//country return $node). Opening the database and querying also works. But from my PHP scripts it does not work. Does anybody know went wrong with my installation? Here is the example: <?php include('BaseXClient.php'); //set content-type header header('Content-type: application/json'); // commands to be performed $namespaces = 'declare namespace d="ddi:datacollection:3_0";'; $cmd = 'for $node in doc("allbus")//(d:QuestionItem|d:MultipleQuestionItem) return data($node/@id)'; $cmd2 = 'for $node in doc("allbus") //(d:QuestionItem|d:MultipleQuestionItem)/d:QuestionText/d:LiteralText/d:Text return data($node)'; try { // create session $session = new Session("129.......", 9000, "admin", "admin"); //create JSON data structure $startJsonObject = "{ questions: ["; $endJsonObject = "]}"; try { $query = $session->query($namespaces.$cmd); $query2 = $session->query($namespaces.$cmd2); $counter = 0; while($query->more()) { $next = $query->next(); $query2->more(); $next2 = $query2->next(); $counter++; ................ etc... ?>