run code in 200+ php & hhvm versions
Bugs & Features
<?php $dogs= [ ['name'=>'jippy','age'=>12 ,'address'=>'bhaktapur', 'size'=>[ 'weight'=>52, 'heght' =>2]], ['name'=>'jipu','age'=>2 ,'address'=>'pur', 'size'=>[ 'weight'=>52, 'heght' =>2]] ]; foreach($dogs as $key=> $item){ foreach($item as $innerkey=>$inneritem) { echo $innerkey . ' ' . $inneritem[$innerkey ]."\n"; } }
based on uRX1G

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).
Note: hhvm uses a JIT which only kicks in after a few runs. Since we run scripts only once, hhvm always runs slower.

VersionSystem time (s)User time (s)Memory (MiB)