3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array('Implied', 1=> 'Integer', '2' => 'String', 3.0 => 'Float', '' => 'empty', 'f' => 'Non-int'); foreach($a AS $k=>$v){ echo "$v is treated as a " . var_export($k, true) . "\r\n\r\n"; }
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Implied is treated as a 0 Integer is treated as a 1 String is treated as a 2 Float is treated as a 3 empty is treated as a '' Non-int is treated as a 'f'