3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = [ 'a' => ['e1' => 1, 'e2' => 2, 'e3' => 3], 'b' => ['e4' => 4, 'e5' => 5], 'c' => ['e6' => 6, 'e7' => 7] ]; print_r(array_flip($arr));
Output for 5.4.0 - 5.6.28, 7.0.0 - 7.1.0
Warning: array_flip(): Can only flip STRING and INTEGER values! in /in/LJVLQ on line 7 Warning: array_flip(): Can only flip STRING and INTEGER values! in /in/LJVLQ on line 7 Warning: array_flip(): Can only flip STRING and INTEGER values! in /in/LJVLQ on line 7 Array ( )
Output for hhvm-3.12.0
Warning: Can only flip STRING and INTEGER values! in /in/LJVLQ on line -1 Warning: Can only flip STRING and INTEGER values! in /in/LJVLQ on line -1 Warning: Can only flip STRING and INTEGER values! in /in/LJVLQ on line -1 Array ( )
Output for hhvm-3.10.0
Warning: Can only flip STRING and INTEGER values! in /in/LJVLQ on line 7 Warning: Can only flip STRING and INTEGER values! in /in/LJVLQ on line 7 Warning: Can only flip STRING and INTEGER values! in /in/LJVLQ on line 7 Array ( )
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/LJVLQ on line 2
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 '[' in /in/LJVLQ on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/LJVLQ on line 2
Process exited with code 255.