function chaining for PHP 7

example.php

<?php declare(strict_types=1);

require_once "✨.🐘";

✨($_)->strlen("foo")->var_dump($_);

✨.🐘

<?php declare(strict_types=1);

function ✨(&$_) {
    return new class($_) {
        private $_;

        public function __construct(&$_) {
            $this->_ = &$_;
        }

        public function __call(string $name, array $args): self {
            $this->_ = $name(...$args);
            return $this;
        }
    };
}

What's the perf impact versus nested calls?

<?php declare(strict_types=1);

function ✨($_) {
    return new class($_) {
        public $_;

        public function __construct(&$_) {
            $this->_ = &$_;
        }
        public function __call(string $name, array $args): self {
            $this->_ = $name($this->_, ...$args);
            return $this;
        }
    };
}

$a = 'asd';
echo ✨($a)
    ->md5()
    ->strtoupper()
    ->_;

Too clever.

Awesome