<?php
$new_price = '';
function filter_price(){
global $new_price;
return $new_price;
}
function show_diff_price(){
global $new_price; // need to make global for this function to access
if($post_new_price){
$new_price = 'new_value';
add_filter('wc_price', 'filter_price');
}
}
add_filter('the_post', 'show_diff_price');
Fatal error: Uncaught Error: Call to undefined function add_filter() in /in/moO0g:19
Stack trace:
#0 {main}
thrown in /in/moO0g on line 19
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
Fatal error: Uncaught Error: Call to undefined function add_filter() in /in/moO0g:19
Stack trace:
#0 {main}
thrown in /in/moO0g on line 19
Process exited with code 255.