<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action=" panduan.php" method="post" >
<input type="text" name="num">
<input type="submit" value="Submit ">
</form>
</body>
</html>
<?php
$num=$_POST['num'];
if ($num>=0 && $num<60){
echo 'Failed';
}elseif ($num>=60&&$num<70){
echo 'You passed, you have to work hard. ';
}elseif ($num>=70&&$num<80){
echo 'Not bad. ';
}elseif ($num>=80&&$num<90){
echo 'There is hope for Tsinghua University. ';
}elseif ($num>=90&&$num<100){
echo 'You have no hope in this life. ';
}elseif ($num=100){
echo 'There is no hope. ';
}elseif ($num>100){
echo 'Einstein is reincarnated, Smecta! ';
}else {
echo 'Please enter the correct score';
}
?>
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
If you want to determine equality, you should use two equal symbols ==
a==b to determine whether a is equal to b
a = b and assign b to a
}elseif ($num=100){ Here, an equal represents an assignment. Assign 100 to $num. The assignment is always true and will not continue to judge subsequent conditions.
There is less equal sign after the greater than sign