How do I add nl2br and htmlentities in this code - php

Question

I'm in need of some help. How can I output the nl2br() and htmlentities() functions into my code? Both need to be applied to 'content' but htmlentities to 'title'.
<?php
$sql = "
SELECT
post.id AS postid, post.title AS title, post.created,
DATE_FORMAT(Created, '%d-%m-%Y') AS created,
post.content AS content, post.image AS image,
post.alttext AS alttext, blog.id, blog.blogname
FROM
post
LEFT JOIN
blog ON post.blogid = blog.id
WHERE
blogid = \"" .(int)$_GET['id'] . "\"
ORDER BY
postid DESC";
$results = $db->query($sql);
if ($results->num_rows) {
while ($row = $results->fetch_object()) {
echo "<hr>
<h3>{$row->title}</h3>
<p>{$row->created}</p>
<p>
<div id='blog-image'>
<img src='images/{$row->image}' alt='{$row->alttext}'>
</div>
{$row->content}
</p>";
}
} else {
echo 'No Results';
}
?>

Answer 1

You can use a new variable for that:
if ($results->num_rows) {
while ($row = $results->fetch_object()) {
$title = htmlentities($row->title);
$content = nl2br(htmlentities($row->content));
echo "<hr>
<h3>{$title}</h3>
<p>{$row->created}</p>
<p>
<div id='blog-image'>
<img src='images/{$row->image}' alt='{$row->alttext}'>
</div>
{$content}
</p>
";
}
}
Or break the string:
if ($results->num_rows) {
while ($row = $results->fetch_object()) {
echo "<hr>
<h3>". htmlentities($row->title) ."</h3>
<p>{$row->created}</p>
<p>
<div id='blog-image'>
<img src='images/{$row->image}' alt='{$row->alttext}'>
</div>
". nl2br(htmlentities($row->content)) ."
</p>
";
}
}

Answer 2

The neatest way is to abstract the fetch process, so that the fact that data needs demangling, is abstracted away from the view process which draws the result.
Add a function :-
function demangle_row($row) {
$row->content = nl2br($row->content);
$row->content = htmlentities($row->content);
$row->title = htmlentities($row->title);
}
Now change the while statement, to use the above code so
While($row = $results->fetch_object()) {
becomes
While($row = demangle_row($results->fetch_object())) {