3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $str_arr = Array ( 0 => Array ( 'street' => 'Erste Strasse', 'street_id' => 1 ), 1 => Array ( 'street' => 'llll', 'street_id' => 2 ) ); #echo $str_arr[array_keys($str_arr)['lalala']]; echo array_keys($str_arr);
Output for 5.4.0 - 5.6.21, hhvm-3.12.0, 7.0.0 - 7.1.0
Notice: Array to string conversion in /in/la8FQ on line 21 Array
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.0 - 5.3.29
Array