Question

So I’m querying database, and it will return an array of id’s.

$val = $db->prepare("SELECT x FROM xx WHERE x_id='$xx'");
$val->execute();
$res = $val->fetchAll(PDO::FETCH_COLUMN, 0);

Then, I will separate the array with commas,

$x= join('', $res);

and echoing it would return 1,18,32.

Then I want to check if $_GET['id'] is one of these numbers

if($_GET['id] contains one of these){ // so here lies the problem, how do I check that it contains 1/18 or 32?
//continue...
}
else{
echo "You have no right to view this.";
}

But how?

Answer 1

Use in_array(val, array).

if(in_array($_GET['id'], $res)) echo "Welcome";
else echo "You have no business here.";

ref: http://php.net/manual/en/function.in-array.php