Save a Base64 Encoded Canvas image to a png file using PHP

<?php
// requires php5 define('UPLOAD_DIR', 'images/'); $img = $_POST['img']; $img = str_replace('data:image/png;base64,', '', $img); $img = str_replace(' ', '+', $img); $data = base64_decode($img); $file = UPLOAD_DIR . uniqid() . '.png'; $success = file_put_contents($file, $data); print $success ? $file : 'Unable to save the file.';
?>

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