<?php
	class Trans {
		private $word;

		public function __construct(string $word) {
			$this->word = $word;
		}

		public function __invoke(array $replaces) {
			return str_replace(array_keys($replaces), array_values($replaces), $this->word);
		}

		public function __toString() {
			return $this->word;
	    }
	}


	$a = new Trans('Hello World');

	echo $a;

	echo $a(['Hello' => 'Buy']);