Browser is showing the entire php code

Question

I am new to PHP. This is my code:

$con_cursuri=mysqli_connect("localhost","root","","proiect");
$date = date('Y-m-d H:i:s');
$usid=$_SESSION['id'];

$result = mysqli_query($con_cursuri,"SELECT * FROM cursuri INNER JOIN subiecte ON      idSubiecte= Subiecte_idSubiecte");


while($row = mysqli_fetch_array($result))
{
echo "<table border=1><form action='cursuri.php' method='POST'> <br><tr><td width=290px ><a href=".$row['link'].">".$row['nume_curs']."</a></td><td width=290px>".$row['descriere_curs']."</td></tr>".$row['nume_subiect']."<td width=290px><input type=hidden name=id value=".$row['idCursuri']."><input type=submit name=submit value='Inrolare curs!'></form></td>
<br>";

}

$submit=$_POST['submit'];  
$id_curs=$_POST['id'];

if($submit)
{
$inrolare_curs = mysqli_query($con_cursuri,"INSERT INTO inrolare_curs VALUES('', '$usid', '$date', '', '$id_curs')") ;  
}

Any sugestions?

PS: yesterday, the page worked. I reinstalled xampp, but the result is the same.

Answer 1

check the followings:

• <?php is at the start of the script
• the file extension should be .php (by default)
• check if php is enabled in your apache configurations: this and this
• use a sample script to check if php is working: <?php echo "hello world"; ?> <?php echo "hello world"; ?>
• install another tool like xampp (example: ampps)

Also take a look to this answer: Apache is downloading php files instead of displaying them

Answer 2

I think you have not used the start and end tag of php ie,

<?php
//your code goes here
?>

Rather you are using the short tags and it is not enabled as answered by @john conde