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exif_read_data may not be available and isn't a requirement - check and silently ignore exif orientation if it isn't there
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@ -143,6 +143,9 @@ class Photo {
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public function orient($filename) {
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// based off comment on http://php.net/manual/en/function.imagerotate.php
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if(! function_exists('exif_read_data'))
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return;
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$exif = exif_read_data($filename);
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$ort = $exif['Orientation'];
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