Illegal string offset for ‘url’ when using WordPress Advanced Custom Fields

2 comments

1. 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.)

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2. It’s better to use gravity forms plugin. You can to download here:
   Rocket Genius Gravity Forms WordPress Plugin

   But if want to fix your code, try to test if is array:

   <?php
   $yes = array('this', 'is', 'an array');
   
   echo is_array($yes) ? 'Array' : 'not an Array';
   echo "n";
   
   $no = 'this is a string';
   
   echo is_array($no) ? 'Array' : 'not an Array';
   ?>
   

   http://php.net/manual/function.is-array.php

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