使用PHP删除数据库中的特定表

Question

I need to delete a specific table on database using PHP code. The problem is that everytime I click "delete", the whole table is deleted.

Here is my code for delete.php :

<?php
 $con=mysqli_connect("localhost","root","","neust");
 if (mysqli_connect_errno())
   {
   echo "Failed to connect to MySQL: " . mysqli_connect_error();
   }

 mysqli_query($con,"DELETE FROM announcement WHERE id=id");

 mysqli_close($con);
 ?>
 <script>alert("Deleted");document.location="Announcement.php"</script>

Answer 1

First of all, I'm assuming you want to delete a specific row. You need to change id=id to something like id=$id where $id is a variable containing an integer of the row you want deleted.

For instance, if you wanted to delete the row that has the id 4 you would do

mysqli_query($con,"DELETE FROM announcement WHERE id=4");

Answer 2

mysqli_query($con,"DELETE FROM announcement WHERE id=id");

shouldn't it be $id or something ? id=id is true for all records in the table!