Online PHP editor | refs for G6CMc

<?php class StringHelper { public function interpolate($str, array $context = [], $asIs = false) { $replace = []; foreach ($context as $key => $val) { if ($asIs) { $replace[$key] = $val; } else { $replace['{{' . $key . '}}'] = $val; } } return strtr($str, $replace); } } class CacheKeysDict { protected static $stringHelper = null; const BOT_ACTIVITY_MESSAGES = 'bot_activity_messages'; const PROFILE = 'profile_{{id}}'; public static function prepareKey($id, array $context = []) { $key = constant("CacheKeysDict::{$id}"); return self::getStringHelper()->interpolate($key, $context); } public static function getStringHelper() { if (is_null(self::$stringHelper)) { self::$stringHelper = new StringHelper; } return self::$stringHelper; } } var_dump([ CacheKeysDict::BOT_ACTIVITY_MESSAGES, CacheKeysDict::prepareKey(CacheKeysDict::BOT_ACTIVITY_MESSAGES), CacheKeysDict::prepareKey(CacheKeysDict::PROFILE, ['id' => 503]), ]);