Online PHP editor | rfc for diC8v

@ 2013-01-15T08:24:04Z

<?php

function decorate(callable $fn, array $decorators, array $arguments = array())
{
    foreach (array_reverse($decorators) as $decorator) {
        if (is_callable($decorator)) {
	        $fn = $decorator($fn);
        }
    }

    return call_user_func_array($fn, $arguments);
}

function decorator(callable $decorator)
{
    // This function replaces 'trace'
    return function($wrapped) use ($decorator) {
        // This function replaces the function which 'trace' is used on.
        return function() use ($wrapped, $decorator) {
            $arguments = func_get_args();
            return call_user_func($decorator, $wrapped, $arguments);
        };
    };
}

function _trace(callable $fn, array $arguments)
{
    printf("Calling %s with arguments %s\n", print_r($fn, true), print_r($arguments, true));
    return call_user_func_array($fn, $arguments);
}

function trace()
{
	return decorate('_trace', ['decorator'], func_get_args());
}

function _foo()
{
    echo "Foo";
}

function foo()
{
    return decorate('_foo', ['trace'], func_get_args());
}

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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