add stats, and add history import details

public/userarea/importify/add_compound.php

@@ -0,0 +1,25 @@
+<?php
+include('../include/headscript.php');
+include("../class/company.php");
+$conn = new mysqli($servername, $username, $password, $database);
+
+$analysisId = $_POST['analysis_id'] ?? null;
+$compoundId = $_POST['compound_id'] ?? null;
+
+if ($analysisId && $compoundId) {
+    $sql = "INSERT INTO analysis_compounds (idanalysisvocabulary, idcompoundsvocabulary) VALUES (?, ?)";
+    $stmt = $conn->prepare($sql);
+    $stmt->bind_param("ii", $analysisId, $compoundId);
+
+    if ($stmt->execute()) {
+        echo json_encode(['success' => true]);
+    } else {
+        echo json_encode(['success' => false, 'error' => 'Error adding compound association.']);
+    }
+
+    $stmt->close();
+} else {
+    echo json_encode(['success' => false, 'error' => 'Invalid input data.']);
+}
+
+$conn->close();