I am converting a Bootstrap template into a WordPress theme.
For custom fields I am using the plugin Advanced Custom Fields. The issue is when I am trying to add an image with the help of Advanced Custom Fields, I get the following error:
Warning: Illegal string offset 'url' in C:\wamp64\www\my-site\wordpress\wp-content\themes\bootstraptowordpress\page-home.php on line 31
$home_page_logo = get_field('home_page_logo');
<?php if( !empty($home_page_logo)): ?>
<img src="<?php echo $home_page_logo['url']; ?>" alt="<?php echo $home_page_logo['alt']; ?>" />
<?php endif; ?>
There are three ways that an image field can be returned in ACF (array, URL, or ID). It sounds like your field is set to return the URL - which returns as a string.
Therefore, you need to access it like this:
<?php echo $home_page_logo; ?>
instead of this:
<?php echo $home_page_logo['url']; ?>
Alternatively, you can edit the set up for the field in your WordPress admin and configure it to return an image array instead of the URL:
If it's set to the array option, you can access the
url like you are currently doing so, as well as access a range of other data pertinent to the image (such as its width and height, WordPress attachment ID, caption if entered, etc.)