PDO bind unknown number of parameters? [duplicate]

Answer 1

Not really hacky, Loops are part of the language for looping a variable number of times.

$values = array('val1', 'val2');
$sql = 'SELECT * FROM Table Where column IN(';
$params = array();
foreach ($values as $val)
{
    $params[] = '?';
    $binds[] = $val;
}
$prep = $db->prepare($sql . join(', ', $params) . ')');
$i = 0;
foreach($binds as $bind){
   $prep->bindValue(++$i, $bind);
}
$prep->execute();

Loop over each value you need to bind, create an array of binding objects which you loop over after appending the SQL.