Simple API for overriding functions and method of classes

api.php

<?php
// APIs for overriding functions and methods of classes
override_class_function(string $class, string $method, Closure $callback);
override_function(string $function, Closure $callback);
call_orginal_function(array $params);

// Example of usage override_function()
override_function('curl_exec', function(){
    $params = func_get_args();
    echo "--- BEFORE ---";
    $result = call_original_function($params);
    echo "--- AFTER ---";
    return $result;
});