How to put QR Code whenever I generate a unique address? block.io API
The address validation script is actually from RosettaCode https://rosettacode.org/wiki/Bitcoin/address_validation#PHP

All you need to do is create the new address and then put the address in a QR Code. You could use the Google Charts API

&lt;?php 
 require_once("block_io.php");

$block_io = new BlockIo($apiKey, $pin, $version);
$createAddress = $block_io-&gt;get_new_address();
$address = $createAddress-&gt;data-&gt;address;
?&gt;

&lt;html&gt;
This is your new address: &lt;br&gt;
&lt;img src="http://chart.googleapis.com/chart?chs=125x125&amp;cht=qr&amp;chl=&lt;?php echo $address; ?&gt;"&gt;
&lt;/html&gt;