Delete row when pressing button not working - php

Question

So currently 160 servers are pulled from a database and stacked under each other:
<tr>
<td>
The last <td> in this row should trigger the removal of that specific row from the database but it doesn't and links me to the error page at this time.
Main code:
<?php
require_once "config/config.php";
$sql = "SELECT * FROM deployments";
if($result = mysqli_query($link, $sql)){
if(mysqli_num_rows($result) > 0){
while($row = mysqli_fetch_array($result)){
echo "<tr>";
echo "<td>" . $row['server'] . "</td>";
echo "<td>" . $row['name'] . "</td>";
echo "<td>" . $row['url'] . "</td>";
echo "<td>" . $row['port'] . "</td>";
echo "<td><span class='badge badge-warning'>ERROR</span></td>";
echo "<td><a href='config/delete.php?id=". $row['server'] ."' title='Delete Record' data-toggle='tooltip'><span class='fa fa-trash'></span></a></td>";
echo "</tr>";
}
// Free result set
mysqli_free_result($result);
} else{
echo "No records matching your query were found.";
}
} else{
echo "ERROR: Could not able to execute $sql. " . mysqli_error($link);
}
?>
Delete.php page code:
<?php
// Process delete operation after confirmation
if(isset($_POST["server"]) && !empty($_POST["server"])){
// Include config file
require_once "config/config.php";
// Prepare a delete statement
$sql = "DELETE FROM deployments WHERE server = ?";
if($stmt = mysqli_prepare($link, $sql)){
// Bind variables to the prepared statement as parameters
mysqli_stmt_bind_param($stmt, "i", $param_server);
// Set parameters
$param_server = trim($_POST["server"]);
// Attempt to execute the prepared statement
if(mysqli_stmt_execute($stmt)){
// Records deleted successfully. Redirect to landing page
header("location: ../deployments.php");
exit();
} else{
echo "Oops! Something went wrong. Please try again later.";
}
}
// Close statement
mysqli_stmt_close($stmt);
// Close connection
mysqli_close($link);
} else{
// Check existence of id parameter
if(empty(trim($_GET["server"]))){
// URL doesn't contain id parameter. Redirect to error page
header("location: error.php");
exit();
}
}
?>
When the fa fa-trash icon is clicked the row that icon shares with the server name url port should be removed from the database.

Answer 1

You should use $_GET['id'] or $_REQUEST['id'] instead of $_POST["server"]
Replace your Delete.php code with below code
<?php
// Process delete operation after confirmation
if (isset($_GET["id"]) && !empty($_GET["id"])) {
// Include config file
require_once "config/config.php";
// Prepare a delete statement
$sql = "DELETE FROM deployments WHERE server = ?";
if ($stmt = mysqli_prepare($link, $sql)) {
// Set parameters
$param_server = trim($_GET["id"]);
// Bind variables to the prepared statement as parameters
mysqli_stmt_bind_param($stmt, "i", $param_server);
// Attempt to execute the prepared statement
if (mysqli_stmt_execute($stmt)) {
// Records deleted successfully. Redirect to landing page
header("location: ../deployments.php");
exit();
} else {
echo "Oops! Something went wrong. Please try again later.";
}
}
// Close statement
mysqli_stmt_close($stmt);
// Close connection
mysqli_close($link);
} else {
// Check existence of id parameter
if (empty(trim($_GET["id"]))) {
// URL doesn't contain id parameter. Redirect to error page
header("location: error.php");
exit();
}
}
?>

Answer 2

I've made some changes to the code myself, thanks for all the help, the removal is still not working and I keep getting the error message from the error.php page.
<?php
// Process delete operation after confirmation
if (isset($_GET["id"]) && !empty($_GET["id"])) {
$id = $_POST["id"];
// Include config file
require_once "config/config.php";
// Prepare a delete statement
$sql = "DELETE FROM deployments WHERE id = '$id'";
if ($stmt = mysqli_prepare($link, $sql)) {
// Set parameters
$param_id = trim($_GET["id"]);
// Bind variables to the prepared statement as parameters
mysqli_stmt_bind_param($stmt, "i", $param_id);
// Attempt to execute the prepared statement
if (mysqli_stmt_execute($stmt)) {
// Records deleted successfully. Redirect to landing page
header("location: ../deployments.php");
exit();
} else {
echo "Oops! Something went wrong. Please try again later.";
}
}
// Close statement
mysqli_stmt_close($stmt);
// Close connection
mysqli_close($link);
} else {
// Check existence of id parameter
if (empty(trim($_GET["id"]))) {
// URL doesn't contain id parameter. Redirect to error page
header("location: error.php");
exit();
}
}
?>
<form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" method="post">
<div class="alert alert-danger fade in">
<input type="hidden" name="id" value="<?php echo trim($_GET["id"]); ?>"/>
<p>Are you sure you want to delete this record?</p><br>
<p>
<input type="submit" value="Yes" class="btn btn-danger">
No
</p>
</div>
</form>

Answer 3

Change your code to...
// Process delete operation after confirmation
if(isset($_POST["id"]) && !empty($_POST["id"])) {
$id = $_POST["id"];
//Include config file
require_once("config/config.php");
//Prepare a delete statement
$sql = "DELETE FROM deployments WHERE server = '$id' ";