สอบถามค่ะ เรื่องการ update สถานะ อยากให้อัพเดทเมื่อเราคลิกที่ปุ่ม approve แล้วจะเปลี่ยนค่าจาก 0 เป็น 1

<table class="table table-hover table-bordered ">
								<th class="active text-center"><h3>Course id</h3></th>
			          			<th class="active text-center"><h3>Course Name</h3></th>
			          			<th class="active text-center"><h3>Teacher </h3></th>
			          			<th class="active text-center"><h3>Approvement </h3></th>
			          			
								<?php
								
								
								
								
								$sql=mysql_query("select * from course where course_approvement='0' "); 
								
								while($result1=mysql_fetch_array($sql)){ ?>
								
								
								<tr class="info">
								
								<td><p class="text-center"><?echo $result1["course_id"]?></p></td>
								
								<td><p class="text-center"><?echo $result1["course_name"]?></p></td>
								
								<td></td>
								<td><p class="text-center"><a href="save_approve.php?course_approvement=0&id=<?=$result1['course_id']; ?>" class="btn btn-success">Approve</a> <a href="save_approve.php" class="btn btn-danger" role="button">Delete</a></p></td>
								<?php }?>
								
								
								
								</tr>
							</table>

<? session_start();
	if($_SESSION['teacher_id'] == ""){
		echo "Please Login!";
		exit();
	}
	mysql_connect("localhost","root","1234");
	mysql_select_db("regis");

	if($_POST['password'] != $_POST['conpassword']){
		echo "Password not Match";
		exit();
	}
	$course_approvement=$_GET["course_approvement"];
	$course_id=$_GET["course_id"];
	
	if($_GET["course_approvement"] == "0" ) { 
		$strSQL = "UPDATE course SET course_approvement = '1' WHERE course_id = '$course_id'"; 
		$objQuery = mysql_query($strSQL); 
		
		
		echo "Save complete";
	}
	mysql_close();
	?>