3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $var = ''; $var2 = null; $var3 = ""; echo isset($var) . "\n"; echo isset($var2). "\n"; echo isset($var3). "\n";
based on XlIlp
Output for 4.3.0 - 7.2.0
1 1