php - Differentiate MYSQL Query for entries with similar numbers (17, 170, 171) -

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i'm working on trying find id's within database. need find following:

17,
,17
,17,

making sure not find other id's start 17 (i.e. 170, 171, 173, etc). i've set following variables pull mysql query:

$userid = '' . $row['userid'] . ',%'; $userid2 = '%,' . $row['userid'] . '%'; $userid3 = '' . $row['userid'] . '%';

but i'm finding i'm pulling in id 170. think happens whenever id 170 put @ end of string. can provide appreciate. here query i'm working with:

"select formid, draft, activestatus   forms  notifyusers '$userid'   , activestatus != '3' or notifyusers '$userid2' , activestatus != '3'   or notifyusers '$userid3' , activestatus != '3'";

you use find_in_set function, this:

select formid, draft, activestatus  forms   (find_in_set('17', notifyusers)>0 , activestatus != '3')   or ...

or can use way:

where   concat(',', notifyusers, ',') ('%,17,%')

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