PHP 8.4 compatibility #18
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I encountered numerous deprecation warnings when using your library with PHP 8.4. To address them, I needed to make certain array types nullable. Nullable types exist since PHP 7.1. Your documentation states compatibility from PHP 5.6.0 onward, but I don't think this is necessary. As of now, PHP 8.1 is the oldest version still actively supported and I don't think the Wallee SDK would be used in an environment below PHP 7.1.