Table of Contents
Tutorial: Upload JSON Object To PDO using PHP
In this tutorial, we will create an Upload JSON Object To PDO using PHP. This code can upload the JSON object to the database server using the PDO query. The system uses a json_decode(); to break down the JSON format into a readable array object, then it will upload the data by breaking down with for() loop to insert the data row by row to the database server. This is a user-friendly kind of program, feel free to modify it.
We will be using PDO as a query scripting it an acronym for PHP Data Objects. It is a lean, clean, and consistent way to access databases. This means developers can write portable code much more accessible.
Getting Started:
First, you have to download & install XAMPP or any local server that runs PHP scripts. Here’s the link for the XAMPP server https://www.apachefriends.org/index.html.
And, this is the link for the bootstrap that I used for the layout design https://getbootstrap.com/.
Creating Database
Open your database web server then create a database name in it db_json_pdo; after that, click Import, then locate the database file inside the folder of the application then click ok.
Creating the database connection
Open your any kind of text editor(notepad++, etc..). Then just copy/paste the code below then name it conn.php.
<?php
$conn = new PDO( 'mysql:host=localhost;dbname=db_json_pdo', 'root', '');
if(!$conn){
die("Fatal Error: Connection Failed!");
}
?>Creating The Interface
This is where we will create a simple form for our application. To create the forms simply copy and write it into your text editor, then save it as index.php.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" name="viewport" content="width=device-width, initial-scale=1"/>
<link rel="stylesheet" type="text/css" href="css/bootstrap.css"/>
</head>
<body>
<nav class="navbar navbar-default">
<div class="container-fluid">
<a class="navbar-brand" href="https://sourcecodester.com">Sourcecodester</a>
</div>
</nav>
<div class="col-md-3"></div>
<div class="col-md-6 well">
<h3 class="text-primary">PHP - Upload JSON Object To PDO</h3>
<hr style="border-top:1px dotted #ccc;"/>
<div class="col-md-8">
<table class="table table-bordered">
<thead class="alert-info">
<tr>
<th>Firstname</th>
<th>Lastname</th>
<th>Address</th>
</tr>
</thead>
<tbody>
<?php
require 'conn.php';
$query = $conn->prepare("SELECT * FROM `member`");
$query->execute();
while($fetch = $query->fetch()){
?>
<tr>
<td><?php echo $fetch['firstname']?></td>
<td><?php echo $fetch['lastname']?></td>
<td><?php echo $fetch['address']?></td>
</tr>
<?php
}
?>
</tbody>
</table>
</div>
<div class="col-md-4">
<form method="POST" action="upload.php" enctype="multipart/form-data">
<input type="file" name="filename"/>
<br />
<button name="upload" class="btn btn-primary"><span class="glyphicon glyphicon-upload"></span> Upload</button>
</form>
</div>
</div>
</body>
</html>
Creating the Main Function
This code contains the main function of the application. This code will upload the json object when the button is clicked. To do this just kindly write these block of codes inside the text editor, then save it as upload.php.
<?php
require 'conn.php';
if(ISSET($_POST['upload'])){
$file = explode(".", $_FILES['filename']['name']);
$ext = end($file);
if($ext == "json"){
$data = file_get_contents($_FILES['filename']['tmp_name']);
$array = json_decode($data, true);
try{
foreach($array as $row){
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$sql = "INSERT INTO `member` (`firstname`, `lastname`, `address`) VALUES ('$row[firstname]', '$row[lastname]', '$row[address]')";
$conn->exec($sql);
}
}catch(PDOException $e){
echo $e->getMessage();
}
$conn = null;
echo "<script>alert('Successfully uploaded!')</script>";
echo "<script>window.location = 'index.php'</script>";
}else{
echo "<script>alert('Only JSON file is available')</script>";
echo "<script>window.location = 'index.php'</script>";
}
}
?>
