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09bfd44c55
String interpolation is a little easier to read and understand as there's no back-and-forth between string format and arguments. Matches JS version: https://github.com/DarthSim/imgproxy/blob/master/examples/signature.js#L27
31 lines
826 B
PHP
31 lines
826 B
PHP
<?php
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$key = '943b421c9eb07c830af81030552c86009268de4e532ba2ee2eab8247c6da0881';
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$salt = '520f986b998545b4785e0defbc4f3c1203f22de2374a3d53cb7a7fe9fea309c5';
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$keyBin = pack("H*" , $key);
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if(empty($keyBin)) {
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die('Key expected to be hex-encoded string');
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}
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$saltBin = pack("H*" , $salt);
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if(empty($saltBin)) {
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die('Salt expected to be hex-encoded string');
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}
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$resize = 'fill';
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$width = 300;
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$height = 300;
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$gravity = 'no';
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$enlarge = 1;
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$extension = 'png';
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$url = 'http://img.example.com/pretty/image.jpg';
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$encodedUrl = rtrim(strtr(base64_encode($url), '+/', '-_'), '=');
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$path = "/{$resize}/{$width}/{$height}/{$gravity}/{$enlarge}/{$encodedUrl}.{$extension}";
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$signature = rtrim(strtr(base64_encode(hash_hmac('sha256', $saltBin.$path, $keyBin, true)), '+/', '-_'), '=');
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print(sprintf("/%s%s", $signature, $path));
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