Take the PHP-REST demo client: https://github.com/moodlehq/sample-ws-clients/tree/master/PHP-REST (or another one) For each test, you will need to change the code between /// PARAMETERs as specified Test 1) - Specify 1 or more assignment ids for which the user has 'mod/assign:grade' capability /// PARAMETERS $assignmentids[] = 3; // user has 'mod/assign:grade' capability for this assignment $assignmentids[] = 4; // user has 'mod/assign:grade' capability for this assignment $params = array('assignmentids'=>$assignmentids); /// PARAMETERS The web service should return the mod_assign grade records for the specified assignments Test 2) - Specify a since value /// PARAMETERS $assignmentids[] = 3; // user has 'mod/assign:grade' capability for this assignment $assignmentids[] = 4; // user has 'mod/assign:grade' capability for this assignment $params = array('assignmentids'=>$assignmentids, 'since'=>1331862337); /// PARAMETERS The web services shoudld return all grades for the specified assignments where the timemodified value is >= since Test 3) - An assignment is specified for which the user does not have the mod/assign:grade capability /// PARAMETERS $assignmentids[] = 20; //user does not have 'mod/assign:grade' capability for this assignment $params = array('assignmentids'=>$assignmentids); /// PARAMETERS The web service returns a warning message