为什么数据仅在foreach循环中显示但在其外部是非对象？

Question

I'm new to PHP and confused about this bit ..

When I have this it shows the data

<?php foreach ($profile as $p):?>
    <?php echo $profile->custom_url;?>
                    <?php endforeach?>

But when I do this I get " Trying to get property of non-object"

   <?php echo $profile->custom_url;?>

yet I have seen code where it's not in a foreach loop and the data displays. Can anybody help explain why that is?

Answer 1

Your foreach should have the format of (array_expression as $value). source

<?php foreach ($profile as $p):?>
<?php echo $p->custom_url;?>
<?php endforeach?>