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<?php var_dump(filter_var('81.110.205.242', FILTER_VALIDATE_IP)); var_dump(filter_var('dead:beef::1', FILTER_VALIDATE_IP));
Output for 5.2.0 - 7.1.0
string(14) "81.110.205.242" string(12) "dead:beef::1"
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function filter_var() in /in/MH7eB on line 2
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: filter_var() in /in/MH7eB on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: filter_var() in /in/MH7eB on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: filter_var() in /in/MH7eB on line 2