php // what should i do to display all courses? - php

Question

i need to display all courses at once
in my code only display one course what should i do to fix it ?
when i click delete it reload page and display next courses
my code ::
$course = $conn->query("select * from student_course where student_id = $id ") ;
if($course->num_rows > 0) {
?>
<table class="table" >
<tr>
<thead>
<th> courseName </th>
<th> courseID </th>
<th> teacher </th>
<th> DELETE </th>
</thead> </tr>
<?php
while ($Scourse = $course->fetch_assoc()){
$cid=$Scourse['course_id'];
$tid=$Scourse['teacher_id'];
$teacher = $conn->query("select * from teacher where id = $tid ") ;
if($teacher->num_rows > 0) {
while($teacherC=$teacher->fetch_assoc()){
$course = $conn->query("select * from course where id = '$cid' ") ;
if($course->num_rows>0){
while($Ncourse=$course->fetch_assoc()){ ;
?>
<tr> <td><?php echo $Ncourse['name']; ?> </td>
<td><?php echo $Scourse['course_id']; ?> </td>
<td> <?php echo $teacherC['name']; ?> </td>
<td><form method="post"><button type="submit" name="<?php echo $cid ?>"> Delete </button></form> </td></tr>
<?PHP
if (isset($_POST["$cid"])){
$dcourse = $conn->query("delete from student_course where course_id = '$cid' and
student_id=$id ") ;
header("location:scourse.php");
}
}
}
}
}
}
}
</table>
i try to delete teacher and course query it work as i need

Answer 1

You're handling associate arrays improperly.
You will need a foreach loop to loop through each row in the associate array.
Example:
foreach($Scourse as $x) {
echo $x['name'];
echo $x['course_id'];
}
See Loop through Associate Arrays here:
https://www.w3schools.com/php/php_arrays.asp
Edit: See #Qirel comments