Refactor contact management functions and remove phpinfo.php

- Updated formatting and structure of functions in edit_contact.inc.php for better readability and consistency.
- Added comments to clarify the purpose of certain code sections, especially regarding mandant handling.
- Removed the deprecated phpinfo.php file to clean up the codebase.

mysyde/admin/common_functions.inc.php

@@ -46,6 +46,21 @@ function mysqli_result( $res, $row = 0, $col = 0 ) {
     return FALSE;
 }
 
+function encryptId($id)
+{
+    $encryptedId = base64_encode($id . "EC1ibm38FI53cxmSnQUi");
+    return $encryptedId;
+}
+
+// Entschlüsselt eine zuvor verschlüsselte ID, um ihre ursprüngliche Form wiederherzustellen.
+function decryptId($encryptedId)
+{
+    $decryptedId = base64_decode($encryptedId);
+    $id = str_replace("EC1ibm38FI53cxmSnQUi", "", $decryptedId);
+    return $id;
+}
+
+
 // Verbindung mir der Datenbank herstellen
 function db_connect() {
     $servername = $GLOBALS['myservername'];
@@ -57,6 +72,9 @@ function db_connect() {
     @mysqli_select_db($GLOBALS['mysql_con'], $db) or die (mysqli_error($GLOBALS['mysql_con']) . " - Keine Verbindung hergestellt!");
     @mysqli_query($GLOBALS['mysql_con'], "set character set 'utf8';");
     @mysqli_query($GLOBALS['mysql_con'], "set names 'utf8';");
+
+    $pdo = new PDO('mysql:host='.$servername.';dbname='.$db, $login, $pass);
+    $GLOBALS['pdo_conn'] = $pdo;
 }
 
 // Globales führen der Reihenfolge in der Felder angewählt werden