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run code in 200+ php & hhvm versions
Bugs & Features
<?php $value = NULL; var_dump(filter_var($value, FILTER_VALIDATE_INT) === FALSE);
Output for 5.2.0 - 7.2.0
bool(true)
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function filter_var() in /in/a5KMe on line 3
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: filter_var() in /in/a5KMe on line 3
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: filter_var() in /in/a5KMe on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: filter_var() in /in/a5KMe on line 3