Description:
------------
Parameter parsing/checking by PDO->query() should be updated to todays standards. I would like to see it be more strict and follow ideas from new code, e.g. do not accept object/arrays for scalar (int) parameter.

[1] PDO->query() -> Warning: query(): could not obtain parameters for parsing

[2] assert(PDO::FETCH_CLASS != 1); PDO->query("SELECT ...", 1, 1, 1) -> four arguments make only sense for mode = PDO::FETCH_CLASS but 1 != PDO::FETCH_CLASS, I'd expect to see a warning

[3] $mode = new stdClass();
PDO->query('SELECT ...', $mode) -> Notice + PDOStatement returned ($mode cast to 1 I guess)

[4] PDO->query('SELECT ..., 2, 3, 4, 5) --> two many arguments in any case according to http://de.php.net/manual/en/function.PDO-query.php





Reproduce code:
---------------
[1] nixnutz@ulflinux:~/php53> sapi/cli/php -r 'error_reporting(E_ALL); $pdo=new PDO("mysql:dbname=phptest;unix_socket=/tmp/mysql.sock", "root", "root"); @$pdo->exec("DROP TABLE test"); $pdo->exec("CREATE TABLE test(id INT)"); $pdo->exec("INSERT INTO test(id) VALUES (1)"); var_dump($pdo->query());'

Warning: query(): could not obtain parameters for parsing in Command line code on line 1
bool(false)

[2] nixnutz@ulflinux:~/php53> sapi/cli/php -r 'error_reporting(E_ALL); $pdo=new PDO("pgsql:host=localhost port=5432 dbname=phptest user=postgres password="); @$pdo->exec("DROP TABLE test"); $pdo->exec("CREATE TABLE test(id INT)"); $pdo->exec("INSERT INTO test(id) VALUES (1)"); $mode = new stdClass(); var_dump($pdo->query("SELECT id FROM test", 1, 1, 1));'
object(PDOStatement)#3 (1) {
  ["queryString"]=>
  string(19) "SELECT id FROM test"
}

[2] nixnutz@ulflinux:~/php53> sapi/cli/php -r 'error_reporting(E_ALL); $pdo=new PDO("pgsql:host=localhost port=5432 dbname=phptest user=postgres password="); @$pdo->exec("DROP TABLE test"); $pdo->exec("CREATE TABLE test(id INT)"); $pdo->exec("INSERT INTO test(id) VALUES (1)"); $mode = new stdClass(); assert(PDO::FETCH_CLASS != 1); var_dump($pdo->query("SELECT id FROM test", 1, 1, 1));'
object(PDOStatement)#3 (1) {
  ["queryString"]=>
  string(19) "SELECT id FROM test"
}

[3] nixnutz@ulflinux:~/php53> sapi/cli/php -r 'error_reporting(E_ALL); $pdo=new PDO("sqlite:/tmp/foo.db"); @$pdo->exec("DROP TABLE test"); $pdo->exec("CREATE TABLE test(id INT)"); $pdo->exec("INSERT INTO test(id) VALUES (1)"); $mode = new stdClass(); var_dump($pdo->query("SELECT id FROM test", $mode));'

Notice: Object of class stdClass could not be converted to int in Command line code on line 1
object(PDOStatement)#3 (1) {
  ["queryString"]=>
  string(19) "SELECT id FROM test"
}

[4] nixnutz@ulflinux:~/php53> sapi/cli/php -r 'error_reporting(E_ALL); $pdo=new PDO("pgsql:host=localhost port=5432 dbname=phptest user=postgres password="); @$pdo->exec("DROP TABLE test"); $pdo->exec("CREATE TABLE test(id INT)"); $pdo->exec("INSERT INTO test(id) VALUES (1)"); $mode = new stdClass(); assert(PDO::FETCH_CLASS != 2); var_dump($pdo->query("SELECT id FROM test", 2, 3, 4, 5));'
object(PDOStatement)#3 (1) {
  ["queryString"]=>
  string(19) "SELECT id FROM test"
}


Expected result:
----------------
Just have a closer look at the function, play with the parameter and make it be a bit stricter and throw more hints for the user.