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<?php $host = "localhost"; $host2 = ".37"; $usedHost = $host2 ?: $host; var_dump($usedHost);
based on 0T1L2
Output for 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.30 - 7.3.0beta1
string(3) ".37"