diff --git a/data.json b/data.json
new file mode 100644
index 0000000..e8f77bf
--- /dev/null
+++ b/data.json
@@ -0,0 +1 @@
+{"data":{"filename":"gsdgsd.zip","checklist_item_id":2,"date_uploaded":1624687288,"filesize":1751670,"checksum":"6e924cbe6993cba96b229521b4fd1faf6754cb84"}}
\ No newline at end of file
diff --git a/index.php b/index.php
new file mode 100644
index 0000000..e1f0159
--- /dev/null
+++ b/index.php
@@ -0,0 +1,26 @@
+<?php
+session_start(); 
+?>
+<!DOCTYPE html>
+<html>
+<head>
+  <title>PHP File Upload</title>
+</head>
+<body>
+  <?php
+    if (isset($_SESSION['message']) && $_SESSION['message'])
+    {
+      printf('<b>%s</b>', $_SESSION['message']);
+      unset($_SESSION['message']);
+    }
+  ?>
+  <form method="POST" action="upload.php" enctype="multipart/form-data">
+    <div>
+      <span>Upload a File:</span>
+      <input type="file" name="uploadedFile" />
+    </div>
+
+    <input type="submit" name="uploadBtn" value="Upload" />
+  </form>
+</body>
+</html>
diff --git a/upload.php b/upload.php
new file mode 100644
index 0000000..a50c5f2
--- /dev/null
+++ b/upload.php
@@ -0,0 +1,85 @@
+<?php
+session_start();
+
+$message = ''; 
+if (isset($_POST['uploadBtn']) && $_POST['uploadBtn'] == 'Upload')
+{
+  if (isset($_FILES['uploadedFile']) && $_FILES['uploadedFile']['error'] === UPLOAD_ERR_OK)
+  {
+    // get details of the uploaded file
+    $fileTmpPath = $_FILES['uploadedFile']['tmp_name'];
+    $fileName = $_FILES['uploadedFile']['name'];
+    $fileSize = $_FILES['uploadedFile']['size'];
+    $fileType = $_FILES['uploadedFile']['type'];
+    $fileNameCmps = explode(".", $fileName);
+    $fileExtension = strtolower(end($fileNameCmps));
+ 
+$data = array(
+  'filename'          => $_FILES['uploadedFile']['name'],
+  'checklist_item_id' => 2, // temporary checklist_item_id
+  'date_uploaded'     => time($_FILES['uploadedFile']['tmp_name']),
+  'filesize'     => $_FILES['uploadedFile']['size'],
+  'checksum'     => sha1_file($_FILES['uploadedFile']['tmp_name']),
+  );   
+
+
+    // sanitize file-name
+    $newFileName = $fileName;
+//$checksum = md5(time() . $fileName) . '.' . $fileExtension
+    // check if file has one of the following extensions
+    $allowedfileExtensions = array('zip');
+
+    if (in_array($fileExtension, $allowedfileExtensions))
+    {
+      // directory in which the uploaded file will be moved
+      $uploadFileDir = './uploaded_files/';
+      $dest_path = $uploadFileDir . $newFileName;
+
+      if(move_uploaded_file($fileTmpPath, $dest_path)) 
+      {
+        $message ='File is successfully uploaded.';
+      }
+      else 
+      {
+        $message = 'There was some error moving the file to upload directory. Please make sure the upload directory is writable by web server.';
+      }
+    }
+    else
+    {
+      $message = 'Upload failed. Allowed file types: ' . implode(',', $allowedfileExtensions);
+    }
+  }
+  else
+  {
+    $message = 'There is some error in the file upload. Please check the following error.<br>';
+    $message .= 'Error:' . $_FILES['uploadedFile']['error'];
+  }
+}
+// Read JSON file
+$json = file_get_contents('./data.json');
+
+// encode array to json
+$jsone = json_encode(array('data' => $data));
+
+//Decode JSON
+$json_data = json_decode($json,true);
+//Decode JSONe
+$jsone_data = json_decode($jsone,true);
+
+print_r($json_data);
+print_r($jsone_data);
+$jsa =serialize($json_data);
+$jsb =serialize($jsone_data);
+if($jsa["data"]["name"] == $jsb["0"]["name"]){
+array_replace($json_data,$jsone_data);
+$jsonDatap = json_encode($jsone_data);
+file_put_contents('./data.json', $jsonDatap);
+}
+else
+{
+array_push($jsone_data, $data);
+$jsonDataf = json_encode($jsone_data);
+file_append('./data.json', $jsonDataf);
+}
+$_SESSION['message'] = $message;
+header("Location: index.php");
