Using data in <select> options in MySQL query - php

Question

I would like to delete a row from an MySQL database. The row that I'd like to delete is displayed in a box, with each being obtained via a loop and SELECT statement.
I've already got the rows in the database being displayed accordingly; however, I'd like a button that once pressed, would delete the selected option from the database.
Here is my current code:
<form action="" method="post">
<label>Patient Name:</label>
<br><br>
<select name="patient" id="patient">
<?php
$conn = new mysqli("localhost", "root", "", "as2");
$result = $conn->query("SELECT patientID, patientName, address FROM patient ORDER BY patientName ASC");
while ($row = $result->fetch_assoc()){
$patientName = $row['patientName'];
$address = $row['address'];
echo "<option value=\"patient\">" .$patientName. ", ".$address."</option>";
}
?>
</select>
<input type="submit" name="delete" value="Delete Record">
</form>
How would I go about making the "Delete Record" button delete the selected option from the database?

Answer 1

first record (patientID) in a string
$patientID = $row['patientID'];
then Add $patientIDto (option value) so it become :
echo "<option value=".$patientID.">" .$patientName. ", ".$address."</option>";
then add this code After everything (ofc outside the "while" loop) :
<?php
$selected_patient = $_POST['patient'];
if( $_SERVER['REQUEST_METHOD'] === 'POST'
&& isset($_POST['delete']) && isset($_POST['patient']) ) {
if( !empty($_POST['patient']) ){
$patient_ID = mysql_real_escape_string($selected_patient);
if ( $conn->query("DELETE FROM patient WHERE patientID={$patient_ID}") )
echo "user has been deleted successfully";
else
echo "Error deleting";
}
}
?>
now you'r good to go , after click delete button refresh your page and Boom! , the user will Disappears
and if you want a real time Action u can use (Ajax)

Answer 2

Try this
while ($row = $result->fetch_assoc()){
$patientName = $row['patientName'];
$address = $row['address'];
$patientID = $row['patientID']; //get patient id
echo "<option value=\"$patientID\">" .$patientName. ", ".$address."</option>"; // change in option value
}
Now on form submit, you will get patient id in $_POST['patient'] , can write your delete query.
Hope this will hope.