<?php $score=79; if($score < 50){ echo 'grade 0';} else if ($score < 56){ echo'grade 1';} else if ($score < 60){ echo 'grade 1.5';} else if ($score < 66){ echo 'grade 2';} else if ($score < 70){ echo 'grade 2.5';} else if ($score < 76){ echo 'grade 3';} else if ($score < 80){ echo 'grade 3.5';} else{echo'grade 4';} ?>