<body> <?php $result_year= mysql_query("select St_id,Reg_year from register WHERE St_id = $St_id ORDER BY Reg_year") or die ("ไม่สามารถเรียกข้อมูลได้1") ; $year = mysql_fetch_assoc($result_year); $Id_care = D2; if($Id_care==D2) $care = 1; else $care = 3; $Reg_year = $year['Reg_year']+ $care; $r_year = $year['Reg_year']; do { $semester=1; do { $result= mysql_query("select * from register,subject WHERE register.St_id = $St_id AND register.Reg_semester=$semester AND register.Reg_year=$r_year AND register.Sub_code=subject.Sub_code") or die ("ไม่สามารถเรียกข้อมูลได้2") ; $dbarr = mysql_fetch_assoc($result) ;