DELETE FROM NOT IN not working with PHP array

Question

I have an array like this

array([0]=> 'email@email.com', [1]=> 'email2@email.com', [2]=> 'email3@email.com');

I also have a table with hunders of emails on it.

I want to be able to delete all of these emails apart from the ones that are in the array.

I tried this code but nothing happens:

    $emails = join(', ', $emails);
    $sql = "DELETE FROM emails WHERE customer_id='".$id."' AND email NOT IN(".$emails.")";
    $query = $this->db->query($sql);

Can anyone tell me where I am going wrong?

Thanks

Peter

Answer 1

You need to use implode function in php to import covert array to string.

Also need to enclose string values of email in quotes:

$sql = "DELETE FROM emails WHERE customer_id='".$id."' AND 
        email NOT IN('".implode("','",$emails)."')";

Answer 2

Maybe:

$emails = implode("', '", $emails);
$sql = "DELETE FROM emails WHERE customer_id='".$id."' AND email NOT IN('".$emails."')";
$query = $this->db->query($sql);

Answer 3

You're missing quotes:

$emails = implode("', '", $emails);
$sql = "DELETE FROM emails WHERE customer_id='".$id."' AND email NOT IN('".$emails."')";
$query = $this->db->query($sql);

Answer 4

Your array contains literals, but these aren't each individually being surrounded by quotes for your IN list.

Answer 5

It's more likely that you're not wrapping the individual emails with quotes in the query. mysql_error should have picked that up though surely?

$emails = join('", "', $emails);
$sql = 'DELETE FROM emails WHERE customer_id="'.$id.'" AND email NOT IN("'.$emails.'")';
$query = $this->db->query($sql);

Try echoing out $sql and see what you get (post it here if it doesnt make much sense).

EDIT: How dare 2 people post the same answer as me while I'm typing my answer! >:|

Answer 6

please try this.

$emails = join(',', $emails);
To avoid comma in last ,
$emails=trim($emails,',');
$sql = "DELETE FROM emails WHERE customer_id='".$id."' AND email NOT IN(".$emails.")";
$res = $this->db->query($sql);