added uid to uname function

search.php

@@ -28,3 +28,26 @@ function username($uname){
     return false;
   }
 }
+
+function uid($uid){
+  global $dbservername;
+  global $dbusername;
+  global $dbpassword;
+  global $dbname;
+
+  $conn = new mysqli($dbservername, $dbusername, $dbpassword, $dbname);
+  if ($conn->connect_error) {
+    die("Connection failed: " . $conn->connect_error);
+  }
+
+  $sql = "SELECT username FROM smz_messages_users WHERE uid='$uid'";
+  $result = $conn->query($sql);
+  $conn->close();
+  if ($result->num_rows > 0) {
+    while($row = $result->fetch_assoc()) {
+      return $row["username"];
+    }
+  } else {
+    return false;
+  }
+}