PHP替换文本中的变量

        $userData = [
            'name' => '张三',
            'age' => 18,
            'phone' => '123456'
        ];
 
        $template = '尊敬的${name}你好，你的年龄为${age}，你的手机号码是${phone}';
 
        //检查参数是否匹配
        preg_match_all('/\${.*?}/', $template, $matches);
        $params = $matches[0];
        $values = [];
        foreach ($params as $param) {
            $key = str_replace(['${', '}'], '', $param);
            $values[$param] = $userData[$key];
        }
 
        $content = strtr($template, $values);