<?php
class TextHelper
{
	public static function isValidEmail($email)
	{
		$emailRegex = '/^[^@]+@[^@]+\.[^@]+$/';
		return preg_match($emailRegex, $email);
	}

	public static function replaceTokens($text, array $tokens)
	{
		foreach ($tokens as $key => $value)
		{
			$token = '{' . $key . '}';
			$text = str_replace($token, $value, $text);
		}
		return $text;
	}
}