如何从 html 中的一个按钮获取两个值？

Question

this line is what Im using to send the values:

<a class="btn btn-danger"href="remove_profesor.php? prof_id=<php echo $row['prof_id'];?> course_section=<php echo $row['course_section'] ;?>

Im trying to have button remove the assigned professor to the class. On the "view_courses.php" page theres a table with all the courses and theres a button next to each course that allows you to remove the professor that is assigned to that course. The button references "remove_professor.php". The issue im having is that "remove_professor.php" isnt recieving the second value which is "course_section".

This line is what im using to receive the values:

 $prof_id = $_GET['prof_id'];
 $course_section = $_GET['course_section'];

When I check the browser the values seems to be sending but then it gives me an error on the $course_section line, it says Undefined array key "course_section"

Answer 1

I think this code will help you
<?php 
    $prof_id = $row['prof_id'];                // this value is coming from database as passing to variable 
    $course_section= $row['course_section'];   // this value is coming from database as passing to variable 
?>
       
        <a class="btn btn-danger" href="remove_profesor.php?prof_id=<?php echo $prof_id?> &course_section=<?php echo $course_section?>">Click Here </a>

Answer 2

There is MULTIPLE issues with your a tag.. This is the correction(s) -- I'll explain below..

<a class="btn btn-danger" href="remove_profesor.php?prof_id=<?php echo $row['prof_id'];?>&course_section=<?php echo $row['course_section'] ;?>">LINK</a>

1. your php tags were invalid -- They need to be <?php not <php ..

2. Your <a> tag was incomplete.. No end quote and no end carat..

3. You need to something to LINK.. And have and end tag </a>

4. You had a space in the URL parameters.. No spaces..

5. Separate parameters with an ampersand &

Answer 3

To send multiple parameters with a GET, you have to separate them with & , like this:

<a class="btn btn-danger" href="remove_profesor.php?prof_id=<?php echo $row['prof_id'];?>&course_section=<?php echo $row['course_section'];?">(link)</a>

It also seems that you write <php instead of the correct <?php .