Admin panel of a Q & A Forum

In a Q & A Forum, when a user posts a question, it should be sent to the administrator for approval in case it contains inappropriate content. After approval it should be removed from this pending approval page and other users should be able to see the question afterwards.

To enable this, we should maintain an approval column in our database table of records and for each record approval should be set to false by default.

In the Pending approvals page only the records with approval=false should be displayed. Below is the MySQL statement for retrieval,

$sql="SELECT * FROM topics WHERE approval=false";

To know which post was approved we should embed the post_id to the URL. And the relevant post should be updated as approval=true.

Below is the complete code.

<?php
$sql="SELECT * FROM topics WHERE approval=false";

$query=mysqli_query($conn,$sql);
echo '<form name="approve" method="post"><table id="results_cat">';
while($row=mysqli_fetch_array($query))
{
echo '<tr style="border:#B7B7B7 1px solid; "><td><h4 style="color:#659EC7">'.$row['topic_subject'].'</h4><br>'.$row['topic_desc'].'</td><td><a href="'.$_SERVER['PHP_SELF'].'?TopicId='.$row['topic_id'].'"><img src="./Images/approve.png"></a></td></tr>';
}

echo '</table></form>';

if(isset($_GET['TopicId'])) //to get the value from the URL
{
$status=$_GET['TopicId'];
$sql2="Update topics set approval=1 where topic_id='$status'";
$query2=mysqli_query($conn,$sql2);

echo '<script>window.location.href ="admin-panel.php";</script>'; //to refresh the page

}
?>

And when retrieving the posts for users to see, only posts with approval=true should be retrieved. Below is a sample MySQL statement to do so.

$sql5="SELECT * FROM topics,users WHERE user_id=topic_by and topics.approval=true";