无法将数据库资源放入mysqli查询[重复]

Question

This question already has an answer here:

• PHP Error: Mysqli_real_escape_string() expects exactly 2 parameters, 1 given 5 answers

I have been searching this whole question in this site but got no real problem that the same as mine.

My code gives this error :

Warning: mysqli_real_escape_string() expects exactly 2 parameters, 1 given

Which I understand what it means, but each time I put the other parameters (database) it keeps gave me another kind of error.

My code

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Answer 1

It required a database resource as the first parameter. For further reference please see link below https://www.sitepoint.com/community/t/mysqli-real-escape-string-expects-exactly-2-parameters-in-mysqli/210830/2