Deleting specific article from database with PHP - php

Question

I'm creating a blog site and I got stuck in this phase where I want to allow authors to delete their own posts, they can already see the delete button below each of their posts. In the DB table I have an author, content and ID of the article. Now I need to get the specific ID of the article that they want to delete, but I have no idea how to do this, the delete button is the same for every article, so I can't use that for help. I have this code to get articles from my DB and the button click code ready. For better imagination here is an image of the site -
... previous code
<?php }
$articles->ArticlesConn();
$result = mysql_query("SELECT * FROM articles_table");
while($row = mysql_fetch_array($result)){ // loop to generate content
?>
<div class="container"> // responsive stuff
<div class="row"> // responsive stuff
<div class="twelve columns"> // responsive stuff
<?php
echo "<h3>" . $row['Title'] . "</h3>
<p>" . $row['Content'] . "</p>"; ?>
</div>
</div>
<div class="row">
<div class="eight columns">
<address><?php echo "Author - " . $row['Author']; ?> </address><br><br><br> /// nick of the author below each article
</div>
<div class="four columns">
<?php
if ($row['Author'] == $_SESSION["username"]) // show delete button if the logged user is an author of generated article
{ ?>
<input type="button" name="delete" value="Delete article"/>
<?php } ?>
</div>
</div>
</div>
<?php
}
?>

Answer 1

To solve your problem, you should add a form to wrap your input.
This form will call the page itself. In this form there is a hidden input with the value of the article id. So when you submit the form, you can get the article id via $_POST['name of the hidden input'].
I will show you the code :
<?php }
if (isset($_POST['article-id'])) {
// prevent SQL injection
$articleId = mysql_real_escape_string($_POST['article-id']);
$res = mysql_query('DELETE FROM articles_tab WHERE id='.$articleId);
if (!$res) {
die(mysql_error());
}
}
$articles->ArticlesConn();
$result = mysql_query("SELECT * FROM articles_table");
while($row = mysql_fetch_array($result)){ // loop to generate content
?>
<div class="container"> // responsive stuff
<div class="row"> // responsive stuff
<div class="twelve columns"> // responsive stuff
<?php
echo "<h3>" . $row['Title'] . "</h3>
<p>" . $row['Content'] . "</p>"; ?>
</div>
</div>
<div class="row">
<div class="eight columns">
<address><?php echo "Author - " . $row['Author']; ?> </address><br><br><br> /// nick of the author below each article
</div>
<div class="four columns">
<?php
if ($row['Author'] == $_SESSION["username"]) // show delete button if the logged user is an author of generated article
{ ?>
<form method="post">
<input type="hidden" name="article-id" value="<?php echo $row['ID'] ?>"/>
<input type="submit" value="Delete article"/>
</form>
<?php } ?>
</div>
</div>
</div>
<?php
}
But you should use mysqli or PDO instead of the old mysql extension, look at this : http://php.net/manual/en/function.mysql-query.php