如何使用PHP格式的Mongo正则表达式转义特殊字符

Question

I have tried below lines of code to get result of matching hotel name using Mongo regex in PHP format. But am not getting how to escape special characters:

$filter_array = array_merge($filter_array,
array('name' => array('$regex' => new MongoRegex("/".$hotel_name."/i"))));

Through this I am getting output for matching hotels but if suppose hotel name is like "ABC ( 3 Stars)" then am unable to get result for this kind of hotels as this hotel name is having special character "(" and ")".

How to escape such special character in hotel name?

Answer 1

It seems it uses PCRE style expressions, in that case preg_quote is used:

new MongoRegex("/".preg_quote($hotel_name, '/')."/i")