Question

I’m a bit confused with this: can I use PHP variables in a pg query?

$conn = pg_pconnect("...");
$a = 1
$b = array ("....")
$c = array ("....")
$d = array ("....")
$i = $a
$ct = "CREATE TABLE $a
(
$b[$i] bigint,
$c[$i] bigint,
$d[$i] bigint
)";

pg_query($conn, $ct);

$result = pg_query($conn, $ct);
if ($result) {$a = $a++}

Will this be able to create 10 tables if I loop this 10 times? Thanks!

Answer 1

If you want to prepare your strings to to be suitable identifiers for PostgreSQL (mixed case? reserved words?) and safeguard against SQL injection at the same time, throw in a pg_escape_identifier():

$ct = 'CREATE TABLE ' . pg_escape_identifier($a) . '(
' . pg_escape_identifier($b[$i]) . ' bigint,
' . pg_escape_identifier($c[$i]) . ' bigint,
' . pg_escape_identifier($d[$i]) . ' bigint
)';

Unless, of course, your identifiers are prepared already.