How to select multiple id in mysql using slim framework

for me this condition is not working . query is working when iam passing single id ,if i pass multiple id’s the data is getting only first id i selected
if (($ProjectId) && $KeyStatusId==’’ && $IssuedTo==’’ && $from==’’ && $to==’’){
$stmt = $this->conn->prepare(“SELECT KeyId, Name, KeyTypeId, KeyType, ProjectId, Project, KeyStatusId, KeyStatus, IssuedTo, IssuedToId, IssueDate, ReturnedTo, ReturnedToId, Returndate, Logdate, PurposeId, Purpose, Description, UserId, User, HookNo, Key1, Key2, Key3, Key4, Key5, Key6, Key7, Key8, Key9, Key10, Key11, Key12, LogTime, LogUserId, Loguser, SetNo, Property, KeysNO, Active, status, CallId, update_time FROM keymaster WHERE ProjectId IN (?)”) or trigger_error($stmt->error, E_USER_ERROR);
$stmt->bind_param(“s”,($ProjectId)) or trigger_error($stmt->error, E_USER_ERROR);
$stmt->execute();
}

Try with bindValue.
$stmt->bindValue(’?’, $ProjectId);

http://php.net/manual/en/pdostatement.bindvalue.php

You are binding to “s” something that is into round brackets, this will never work.