PHP - SQL query only shows last result - php

Question

This only returns the last one of my rows:
<?php
function all_infos_query() {
global $connection;
$query = "SELECT * ";
$query .= "FROM pages ";
$query .= "JOIN subjects ";
$query .= "ON pages.subject_id=subjects.id";
$infos_set = mysqli_query($connection, $query);
confirm_query($infos_set);
return $infos_set;
}
function infos_content() {
$infos_set = all_infos_query();
while($info = mysqli_fetch_assoc($infos_set)) {
$output = htmlentities($info["content"]);
$output .= " <br><br>";
}
mysqli_free_result($infos_set);
return $output;
}
?>
<?php echo infos_content() ?>
If I echo it like this it works (returns all rows):
<?php
$result = all_infos_query();
if($result === FALSE) {
echo "query failed: " . mysqli_error($connection);
}
else {
while($row = mysqli_fetch_array($result)) {
echo htmlentities($row['content']);
echo "<br><br>";
}
}
?>
What do I have to change in the function infos_content() to also get all the rows?
Thanks a lot!

Answer 1

This is because you redefine $ouput for every result
while($info = mysqli_fetch_assoc($infos_set)) {
$output = htmlentities($info["content"]);
$output .= " <br><br>";
Instead, create $ouput outside the loop and append to it..
$output ='';
while($info = mysqli_fetch_assoc($infos_set)) {
$output .= htmlentities($info["content"]);
$output .= " <br><br>";