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I need to convert an image url (wordpress avatar) to a base_64 encode data using a wordpress function . I have a shortcode that has the image url for all wordpress users...

For example... [user_meta_avatar_pic] ; which will show an image like below..

https://upload.wikimedia.org/wikipedia/commons/7/79/2010-brown-bear.jpg

I need [user_meta_avatar_pic] shortcode to be converted to a base64_encode data

Base64_encode for image above = aHR0cHM6Ly91cGxvYWQud2lraW1lZGlhLm9yZy93aWtpcGVkaWEvY29tbW9ucy83Lzc5LzIwMTAtYnJvd24tYmVhci5qcGc=

I need this base64_encode url for a services I am using with a SAAS imaging product.

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    Do you want to base64 encode the image or the URL? That looks like the base64 encode of the URL, but I'm not sure what use that is.
    – Jacob Peattie
    Dec 15, 2017 at 5:50
  • I want to base64 encode the url... I need to append that url to another service
    – Glenn Thornton
    Dec 15, 2017 at 6:01
  • What service? I can understand why a service might need the image itself base64 encoded, but I can't understand why the URL itself would need to be encoded.
    – Jacob Peattie
    Dec 15, 2017 at 6:13
  • It is for a service name Cloudinary... Here is the url I am trying to create.. res.cloudinary.com/demo/image/upload/…
    – Glenn Thornton
    Dec 15, 2017 at 20:50
  • I am trying to add a users avatar to a background pic
    – Glenn Thornton
    Dec 15, 2017 at 20:51

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In your post you wrote : "which will show an image like below", I assume that your shortcode return an img tag and you have to find your URL here, tell me if I'm wrong.

Using DOMDocument http://php.net/manual/fr/class.domdocument.php to parse your img tag is a good idea.

$img = do_shortcode('[user_meta_avatar_pic]'); // Here your get your img tag

// Use DOMDocument to parse your img tag
$dom = new DOMDocument();
$dom->loadHTML($img);
$img_url = base64_encode($dom->getElementsByTagName('img')->item(0)->getAttribute('src')); // Encode the extracted src from your img tag

You can also use regex, I have no idea about performances comparison beetween a regex and DOMDocument.

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  • The shortcode just shows the url of the image... Not exactly the pic.... It could be used for an image tag like <img src="[user_meta_avatar_pic]" alt="Mountain View">
    – Glenn Thornton
    Dec 15, 2017 at 20:54
  • Ok ! base64_decode(do_shortcode('[user_meta_avatar_pic]'));
    – Elex
    Dec 16, 2017 at 7:37

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