PHP retrieving variables from a large SQL result set - php

Question

I have been working on my own PHP project. I have hit an obstacle. I am trying to retrieve the results of a database and print out a form for each result set.
I then wish to interact with one particular result either be deleting it or passing it into a function etc..
Heres is my current code :
<?php
while($row = mysqli_fetch_array($result)){
echo '<div id="post">'; ?>
<form action="" method="post">
<?php
echo "<font size=4>".$row['post']."<br>";
echo "posted by : ".$row['username']."<br>";
$id = $row['p_id']; ?>
<input type="submit" name="choice" value="Y">
<input type="submit" name="choice" value="N">
</form>
<br>
</div>
}
<?php
if($_POST['choice']=="Y"){
// progress
functionA();
}
else if($_POST['choice']=="N"){
// delete or remove
functionB();
}
?>
So my goal here would be click Y to progress that particular result or N to delete/remove the result.
However currently by clicking either button all results either get deleted or progress. I do know that the id should be used to differentiate between posts but I cant quite seem to get it to work. Once the button is pressed it passes all results to either function.

Answer 1

First of all, I suppose you want to know the record to delete. So, add an input to your form:
<input type="hidden" name="id" value="<?php echo $row['p_id']; ?>">
Then, in your script, call:
if( $_POST['choice'] == "Y" )
{
// progress
functionA( $_POST['id'] );
}
elseif( $_POST['choice']=="N" )
{
// delete or remove
functionB( $_POST['id'] );
}
Additional problem: how you can use your db connection inside the functions? Assuming your mysqli connection is named $conn, call the function(s) in this way:
functionA( $_POST['id'], $conn );
Side note: First process $_POST values, then retrieve db records and print it.
Side note 2: take a look at prepared statement.
Read more about variable scope
Read more about prepared statements

Answer 2

Use two different <input type="radio">s for each item with the id in the value and let the user select which to delete and which to process.
So for an item with id 1 the outputted HTML would look like:
<input type="radio" name="items[1]" value="delete"><input type="radio" name="items[1]" value="process">
The name forces the items to go to _POST as an array with the ids as keys and the selected action as their values.
Example html: https://jsfiddle.net/gu1gkwod/