<?php echo 'ตัดคะแนน'; $score=90; if($score<50){echo 'grade 0';} else if($score<55){echo 'grade 1';} else if($score<60){echo 'grade 1.5';} else if($score<65){echo 'grade 2';} else if($score<70){echo 'grade 2.5';} else if($score<75){echo 'grade 3';} else if($score<80){echo 'grade 3.5';} else {echo 'grade 4';}?>