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 - 5.4.26
Fatal error: Cannot use [] for reading in /in/Yl9JI on line 21
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.28
Parse error: syntax error, unexpected '[', expecting ',' or ';' in /in/Yl9JI on line 21
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[', expecting ',' or ';' in /in/Yl9JI on line 21
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `','' or `';'' in /in/Yl9JI on line 21
Process exited with code 255.