<?php
$score = 77 ;
if($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' ;}
?>
