Ali Ali - 3 months ago 39
PHP Question

How to encode an image resource to base64?

I was wondering if there's a way to encode an image to a base64 if it was a resource
for example if I loaded an image using GD

$image = imagecreatefromjpeg("captcha/$captcha-$num.jpg");

// Add some filters
imagefilter($image, IMG_FILTER_PIXELATE, 1, true);
imagefilter($image, IMG_FILTER_MEAN_REMOVAL);


If this was my code and instead of saving the image and displaying it using

<img src='someimage.jpg'>


I wanted to display it as a data URI without having to save it, like

<img data='src="data:image/jpeg;base64,BASE64_HERE'>


How can I do that?

Answer
$image = imagecreatefromjpeg("captcha/$captcha-$num.jpg");

// Add some filters
imagefilter($image, IMG_FILTER_PIXELATE, 1, true);
imagefilter($image, IMG_FILTER_MEAN_REMOVAL);

ob_start(); // Let's start output buffering.
    imagejpeg($image); //This will normally output the image, but because of ob_start(), it won't.
    $contents = ob_get_contents(); //Instead, output above is saved to $contents
ob_end_clean(); //End the output buffer.

$dataUri = "data:image/jpeg;base64," . base64_encode($contents);
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