- urlencode: documentation ( source)
<?php
$url = urlencode('http://littlebird.static.wearejh.com');
$hashTags = 'littlebird';
$text = urlencode('Product Name');
$imageurl = urlencode('http://johnlewis.scene7.com/is/image/JohnLewis/000105335');
?>
<a target="blank" href="http://pinterest.com/pin/create/button/?url=<?php echo $url ?>&media=<?php echo $imageurl ?>" title="Pin This Post">Pin</a>