Code PHP

?PHP
echo "

โปรแกรมตรวจสอบผลการเรียน

";
$score1 = 80;
$score2 = 72;
$score3 = 45;
$score4 = 86;
$score5 = 55;

if(($score1<=49))
{
$grade = 0;
}
elseif ($score1 <=54)
{
$grade = 1;
}
elseif($score1<=59)
{
$grade = 1.5;
}
elseif($score1<=64)
{
$grade = 2;
}
elseif($score1<=69)
{
$grade = 2.5;
}
elseif($score1<=74)
{
$grade = 3;
}
elseif($score1<=79)
{
$grade = 3.5;
}
else
{
$grade = 4;
}
echo "< color =" blue">คนที่ 1 มีคะแนน $score1 คะแนน
";
echo "เกรด = $grade
";
echo "###########################
";

if(($score2<=49))
{
$grade = 0;
}
elseif ($score2 <=54)
{
$grade = 1;
}
elseif($score2<=59)
{
$grade = 1.5;
}
elseif($score2<=64)
{
$grade = 2;
}
elseif($score2<=69)
{
$grade = 2.5;
}
elseif($score2<=74)
{
$grade = 3;
}
elseif($score2<=79)
{
$grade = 3.5;
}
else
{
$grade = 4;
}
echo "คนที่ 2 มีคะแนน $score2 คะแนน
";
echo "เกรด = $grade
";
echo "###########################
";

if(($score3<=49))
{
$grade = 0;
}
elseif ($score3 <=54)
{ $grade = 1;
}
elseif($score3<=59)
{
$grade = 1.5;
}
elseif($score3<=64)
{
$grade = 2;
}
elseif($score3<=69)
{
$grade = 2.5;
}
elseif($score3<=74)
{
$grade = 3;
}
elseif($score3<=79)
{
$grade = 3.5;
}
else
{
$grade = 4;
}
echo "คนที่ 3 มีคะแนน $score3 คะแนน
";
echo "เกรด = $grade
";
echo "###########################
";

if(($score4<=49))
{
$grade = 0;
}
elseif ($score4 <=54)
{
$grade = 1;
}
elseif($score4<=59)
{
$grade = 1.5;
}
elseif($score4<=64)
{
$grade = 2;
}
elseif($score4<=69)
{
$grade = 2.5;
}
elseif($score4<=74)
{
$grade = 3;
}
elseif($score4<=79)
{
$grade = 3.5;
}
else
{
$grade = 4;
}
echo "คนที่ 4 มีคะแนน $score4 คะแนน
";
echo "เกรด = $grade
";
echo "###########################
";

if(($score5<=49))
{
$grade = 0;
}
elseif ($score5 <=54)
{
$grade = 1;
}
elseif($score5<=59)
{
$grade = 1.5;
}
elseif($score5<=64)
{
$grade = 2;
}
elseif($score5<=69)
{
$grade = 2.5;
}
elseif($score5<=74)
{
$grade = 3;
}
elseif($score5<=79)
{
$grade = 3.5;
}
else
{
$grade = 4; }
echo "คนที่ 5 มีคะแนน $score5 คะแนน
";
echo "เกรด = $grade
";
echo "###########################
";
?>