Getting Started
I’ve used Bootstrap in this tutorial which is a CSS framework and is included in the downloadable of this tutorial, but if you want, you may download Bootstrap using this link.
Creating a QR Code
QR Code will be generated as an image, and it will look something like this:
<img src='https://chart.googleapis.com/chart?chs=300x300&cht=qr&chl=$code&choe=UTF-8'>
Descriptions:
| cht=qr | Required | Specifies a QR code. |
| chs= | Required | Image size. |
| chl= | Required | The data to encode. Data can be digits (0-9), alphanumeric characters, binary bytes of data, or Kanji. |
| choe= | Optional | How to encode the data in the QR code. |
For additional info, you may visit Google’s documentation on QR Code using this link.
Creating a Script
To provide a working example, let’s create a form and generate a QR Code on the inputted text. Please create a new file, name it as index.php and paste the codes below.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>How to Create a QRCode using Google QRCode API</title>
<link rel="stylesheet" type="text/css" href="bootstrap/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<h1 class="page-header text-center">QRCode using Google QRCode API</h1>
<div class="row">
<div class="col-sm-3 col-sm-offset-3">
<form method="POST">
<div class="form-group">
<label for="">Text to Convert to QRCode</label>
<input type="text" class="form-control" name="text_code">
</div>
<button type="submit" class="btn btn-primary" name="generate">Generate QRCode</button>
</form>
</div>
<div class="col-sm-3">
<?php
if(isset($_POST['generate'])){
$code = $_POST['text_code'];
echo "
<img src='https://chart.googleapis.com/chart?chs=300x300&cht=qr&chl=$code&choe=UTF-8'>
";
}
?>
</div>
</div>
</div>
</body>
</html>That ends this tutorial. Happy Coding!
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