PHP & MySQL array problem

I'm trying to get the categories name from each array value from the database and then add the categories name to an array $cat_name, how can I do this using PHP & MySQL?

$array = array(1, 2, 3, 4, 5);

$cat_name = array()开发者_Python百科;
$dbc = mysqli_query($mysqli,"SELECT category 
                 FROM categories 
                 WHERE id = '" . $array . "'"); 


if (!$dbc) {
    print mysqli_error($mysqli);
} else {
    while($row = mysqli_fetch_array($dbc)){
    $cat_name[] = $row['category'];
    }
}

do it like this:

$dbc = mysqli_query($mysqli,"SELECT category 
                 FROM categories 
                 WHERE id IN (" .implode(",", $array). ")"); 

$dbc = mysqli_query($mysqli,"SELECT category 
    FROM categories
    WHERE id IN (" . implode(",", $array) . ")");

However when doing thing make sure your array actually contains only integers or you'll have a nasty SQL injection hole. If your array might contain something else, loop through it escaping all values and enclosing them in quotes before doing this.

The code looks good. Am I right to presume that you are getting an error each time? I don't think your SQL syntax is right. I use 'WHERE id IN('.implode($array,',').')'. Not sure whether this is your question...

EDIT: I have the slight suspicion that you could also do away with your loop and instead simply issue a second fetch for the 'categories' column.