<body>
<?php
$score=85;
if($score<50)
{echo'grade 0';}
else if($score<56)
{echo 'grade1';}
else if($score<60)
{echo 'grade1.5';}
else if($score<66)
{echo 'grade2';}
else if($score<70)
{echo 'grade2.5';}
else if($score<76)
{echo 'grade3';}
else if($score<80)
{echo 'grade3.5';}
else if($score<100)
{echo 'grade4';}
?>
</body>
</html>
