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run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(shell_exec("whois -h whois.radb.net -- '-i origin AS32934' | grep ^route"));
based on tiuVs
Output for 5.6.0 - 5.6.30, 7.0.0 - 7.2.8
NULL
Output for hhvm-3.15.4
string(79) "Failed to exec: `whois -h whois.radb.net -- '-i origin AS32934' | grep ^route' "