PHP PDO将字符串转换为MS SQL datetime2

Question

I have issues with converting my string into a valid datetime2 for use in a MS SQL DB. I am using the CAST operator from SQL to convert it into a valid format. The Code looks like this:

include("sqlconnection.php");
$statement = $pdo->prepare("UPDATE auftrag SET bestelldatum = CAST(:bestelldatum AS datetime(7)), lieferdatum_wunsch = :lieferdatum, fk_id_kunde = (Select id_kunde from kunde where firmenname = :kunde), fk_id_auftragsstatus = (SELECT id_auftragsstatus from auftragsstatus WHERE bezeichnung = :status) WHERE id_auftrag = :id");
$result = $statement->execute(array("bestelldatum" => $_POST['bestelldatum'], "lieferdatum" => $_POST['lieferdatum'], "kunde" => $_POST['kunde'], "status" => $_POST['status'], "id" => $_POST['id']));
echo $result;

The format of the $_POST['bestelldatum'] looks like this: dd/mm/yyyy
I get the following error:

Uncaught PDOException: SQLSTATE[42000]: 
[Microsoft][ODBC Driver 13 for SQL Server][SQL Server]CAST oder CONVERT: Für 
den datetime-Typ wurden ungültige Attribute angegeben. in 
C:\xampp\htdocs\php\scripts\scripts.php:402 Stack trace: #0 
C:\xampp\htdocs\php\scripts\scripts.php(402): PDOStatement->execute(Array) #1 
C:\xampp\htdocs\php\scripts\scripts.php(30): saveAuftragChanges() #2 {main} 
thrown in C:\xampp\htdocs\php\scripts\scripts.php on line 402

Translated: cast or convert invalid attributes specified for type 'datetime'

I hope you can help me,
Sincerly,
Jan

Answer 1

The strtotime function expects a date with slashes to be in US format (mm/dd/yyyy) but your date is in European format so it first needs to have the slashes changed to dashes. Use the following to format your date for SQL.

$bestelldatum = date('Y-m-d',strtotime(str_replace('/','-',$_POST['bestelldatum'])));

If a time is needed too try this instead (only change is to add a valid time to the variable created).

$bestelldatum = date('Y-m-d 00:00:01',strtotime(str_replace('/','-',$_POST['bestelldatum'])));