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<?php $x = parse_url("http://8.8.8.8?/btc.txt"); print_r($x); print_r(gethostbynamel("9999?1.2.3.4")); ?>
Output for 5.6.28, 7.0.14 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Array ( [scheme] => http [host] => 8.8.8.8 [query] => /btc.txt )
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.21, 7.0.0 - 7.0.6
Array ( [scheme] => http [host] => 8.8.8.8? [path] => /btc.txt )

preferences:
286.57 ms | 403 KiB | 353 Q