Is there a way to check if a value exists in a mysql column? I have table songs, and there are some columns, one of them is called 'agent_ip' where i will put a list/array of all user ip's that will visit the site. I need to check if current user ip is present in column 'agent_ip'. Here is some of my code:
public function voteSong($song_id, $case, $agent_ip) {
$query = $this->link->prepare("SELECT * FROM songs WHERE id = ? LIMIT 1");
$query->bindValue(1, $song_id);
$query->execute();
$rowcount = $query->rowCount();
if ($rowcount != 0)
{
if (!in_array($agent_ip, $r['ip']))
{
if ($case === 'like')
{
while($r = $query->fetch())
{
$vote = $r['votes'] + 1;
}
}
elseif ($case === 'dislike')
{
while ($r = $query->fetch())
{
if ($r['votes'] > 0)
{
$vote = $r['votes'] - 1;
}
else
{
$vote = 0;
}
}
}
$query = $this->link->prepare("UPDATE songs SET datetime = ?, votes = ?, agent_ip = ? WHERE id = ?");
$query->execute(array(date("Y-m-d H:i:s"), $vote, $agent_ip, $song_id));
}
}
}
The line if(!in_array($agent_ip, $r['ip']))
contains the wrong function which won't work, but i need an alternative for mysql. $r['ip'] variable is data from the 'agent_ip' column which look like this 127.0.0.1, 127.0.0.1, 127.0.0.1 (using 127.0.0.1 just for example, every 127.0.0.1 is a different ip)