"RRULE:FREQ=DAILY;COUNT=7" , "20061102T100000" => "RRULE:FREQ=WEEKLY;COUNT=26;INTERVAL=1;BYDAY=TH" , "20061103T160000" => "RRULE:FREQ=WEEKLY;INTERVAL=2;UNTIL=20071222T235900" , "20061103T073000" => "RRULE:FREQ=MONTHLY" ); foreach( $tests AS $start => $rrule ) { echo "$start - $rrule\n"; $rule = new RRule( $start, $rrule ); $i = 0; do { if ( ($i % 4) == 0 ) echo "\n"; $date = $rule->GetNext(); if ( isset($date) ) { echo " " . $date->Render(); } } while( isset($date) && $i++ < 50 ); echo "\n\n\n"; } exit(0); ?>