PHP＆Mysql：PHP过滤列表中的数据库查询

Question

I have a jQuery list which is returning a list of user_name on php page like

rohit,Bhalu,Ram

Now I want to filter the user_names from the database which is not the part of above list

So far I am trying the basic query of mysql like

 select * from table_name where user_name NOTIN('rohit','Bhalu','Ram');

But problem with above query is, this a not the specific solution for bigger list which contains 1000 user_name so I want to use some query filter with php

Please suggest me what should I do in this stage ?

Answer 1

First use index for field user_name.

Second use this query (in $array - usernames)

$array = array('Rohit', 'Bhalu');
$comma_separated = implode("','", $array);
$comma_separated = "'".$comma_separated."'";
$query = "select * from table_name where user_name NOT IN($comma_separated)";