PHP elseif问题

Question

I'm trying to add col-lg-6 to one of the Divs when no content is being displayed for name3 and name4, but it keeps showing as col-lg-4.

<?php
$name3 = get_field('name3', $post->ID);
$name4 = get_field('name4', $post->ID);
?>

<div class="col-lg-3">
    <!-- name1 exists -->
</div>

<?php if ($name3 == "" || $name4 == ""): ?>
    <div class="col-lg-4">
    <?php elseif ($name3 == "" && $name4 == ""): ?>
        <div class="col-lg-6">
        <?php else: ?>
            <div class="col-lg-3">
            <?php endif; ?>
            <!-- name2 exists -->
        </div>

        <div class="col-lg-3">
            <!-- name3 does not exist -->
        </div>

        <div class="col-lg-3">
            <!-- name4 does not exist -->
        </div>

I've looked on here and other sites but I just can't figure it out. I know it's probably going to be something stupid and simple but I really need to sort this out now.

Answer 1

Simply reverse order of checks:

// if both are empty
<?php if($name3 == "" && $name4 == ""): ?>
<div class="col-lg-6">
// if one of them is empty
<?php elseif($name3 == "" || $name4 == ""): ?>
<div class="col-lg-4">
<?php else: ?>
<div class="col-lg-3">
<?php endif; ?>

otherwise first if () is true when one of variables is empty and if both are empty

also you can just change || (or) operator to xor operator in your first if ()