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run code in 150+ php & hhvm versions
Bugs & Features
<?php $ip = '192.168.0.1'; var_dump(filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 | FILTER_FLAG_IPV6)); var_dump(!filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE));
Output for 5.3.7 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
string(11) "192.168.0.1" bool(true)
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.2.0 - 5.3.6
bool(false) bool(true)
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function filter_var() in /in/ipERf on line 5
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: filter_var() in /in/ipERf on line 5
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: filter_var() in /in/ipERf on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: filter_var() in /in/ipERf on line 5