PHP 7.3 Function create_function() deprecated from 5.6 update

Question

I have recently upgraded a site im working on from PHP Version 5.6 to 7.3

The problem I am having is with a deprecated function in my wordpress functions.php

add_filter('max_srcset_image_width', create_function('', 'return 1;'));

How would i rewrite the above code for 7.3

I have already tried:

add_filter('max_srcset_image_width', function('', 'return 1;'));

Thanks

Answer 1

You can use functions directly like closures.

add_filter('max_srcset_image_width', function() { return 1; });

Update:

Since PHP 7.4 you can use shorthand arrow functions and write it shorter.

add_filter('max_srcset_image_width', fn() => 1);