Trans.php

	<?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']);