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run code in 300+ PHP versions simultaneously
<?php $original = [ CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1 ]; $update = [ CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_2_0 ]; var_dump($original, $update, $original += $update, array_replace($original, $update));

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57.26 ms | 402 KiB | 5 Q