Restructure & change a lot of this

upload.php

@@ -0,0 +1,52 @@
+<?php
+include __DIR__ . "/incl/util.php";
+header("Content-Type: text/plain");
+
+$time = time();
+$conn = connectToDatabase();
+$color = $_GET['color'];
+$name = $_GET['name'];
+
+$color = ltrim($color, '#');
+if (!preg_match('/^[a-f0-9]{6}$/i', $color)) {
+    echo "-1";
+    exit;
+}
+
+if (strlen($name) < 3) {
+    echo "-2";
+    exit;
+}
+
+if (strlen($name) > 50) {
+    echo "-3";
+    exit;
+}
+$name = base64_encode($name);
+
+$stmt = $conn->prepare("SELECT name FROM colors WHERE color = :color");
+$stmt->bindParam(':color', $color);
+$stmt->execute();
+
+if ($stmt->rowCount() > 0) {
+    echo "-4";
+    exit;
+}
+
+$stmt = $conn->prepare("SELECT name FROM colors WHERE name = :name");
+$stmt->bindParam(':name', $name);
+$stmt->execute();
+
+if ($stmt->rowCount() > 0) {
+    echo "-5";
+    exit;
+}
+
+$stmt = $conn->prepare("INSERT INTO colors (color, name, timestamp) VALUES (:color, :name, :time)");
+$stmt->bindParam(':color', $color);
+$stmt->bindParam(':name', $name);
+$stmt->bindParam(':time', $time);
+$stmt->execute();
+$lastInsertId = $conn->lastInsertId();
+
+echo "1:" . $lastInsertId;