PHP combined with HTML code - php

Question

I am trying to put some php code in a code that is combined with HTML.
I have the following code:
<?php
$result = mysqli_query($db,"SELECT * FROM klassen");
while($record = mysqli_fetch_array($result)) {
echo '<div class="groepitem"><input type="radio" [IN THIS PLACE] name="groep" value="' . $record['klasNaam'] . '">' . $record['klasNaam'] . '</div>';
}
?>
On the [in this place] spot I want to put the following code:
if($_SESSION['gebruikers_klasid'] == $record['klas_id']) {
echo 'checked';
}
I have tried it multiple times but I just can't get it to work.

Answer 1

You can concatenate a ternary operator like this:
$result = mysqli_query($db, "SELECT * FROM klassen");
while($record = mysqli_fetch_array($result)) {
echo '<div class="groepitem"><input type="radio" ' . ($_SESSION['gebruikers_klasid'] == $record['klas_id'] ? "checked" : "") . ' name="groep" value="' . $record['klasNaam'] . '">' . $record['klasNaam'] . '</div>';
}

Answer 2

You can do this many different ways, but if you want cleaner html code:
<?php
$result = mysqli_query($db,"SELECT * FROM klassen");
while ($record = mysqli_fetch_array($result)) {
if ($_SESSION['gebruikers_klasid'] == $record['klas_id']) {
$checked = ' checked';
} else {
$checked = '';
}
echo '<div class="groepitem"><input type="radio"' . $checked . ' name="groep" value="' . $record['klasNaam'] . '">' . $record['klasNaam'] . '</div>';
}
?>
OR...
<?php
$result = mysqli_query($db,"SELECT * FROM klassen");
while ($record = mysqli_fetch_array($result)) {
$checked = ($_SESSION['gebruikers_klasid'] == $record['klas_id']) ? ' checked' : '';
echo '<div class="groepitem"><input type="radio"' . $checked . ' name="groep" value="' . $record['klasNaam'] . '">' . $record['klasNaam'] . '</div>';
}
?>

Answer 3

Another way is to exit your echo then run the conditional statement then resume your echo... eg
<?php
$result = mysqli_query($db,"SELECT * FROM klassen");
while($record = mysqli_fetch_array($result)) {
echo '<div class="groepitem"><input type="radio" ';
if($_SESSION['gebruikers_klasid'] == $record['klas_id']) { echo 'checked'; }
echo ' name="groep" value="' . $record['klasNaam'] . '">' . $record['klasNaam'] . '</div>';
}
?>

Answer 4

this should work
<?php
$result = mysqli_query($db,"SELECT * FROM klassen");
while($record = mysqli_fetch_array($result)) {
if($_SESSION['gebruikers_klasid'] == $record['klas_id']) {
$var = 'checked';
}
echo '<div class="groepitem"><input type="radio" '.$var.' name="groep" value="' . $record['klasNaam'] . '">' . $record['klasNaam'] . '</div>';
}
?>
EDIT: now session check it's inside the loop