3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $arr = [ "one" => "one", "two" => "two", "group1" => [ "three" => "three", "four" => "four", "group2" => [ "five" => "five", ], ], "group3" => [ "six" => "six", ] ]; function mergeRecursive(array $array, $result = []) { foreach($array as $k => $v) { if(!is_array($v)) yield $v; else yield "$k," . mergeRecursive($v, $result); } } foreach(mergeRecursive($arr) as $v) echo $v . "\n";
based on jiHg5
Output for 7.1.0 - 7.2.0
one two Recoverable fatal error: Object of class Generator could not be converted to string in /in/NMGdN on line 27
Process exited with code 255.
Output for 5.5.24 - 7.0.20
one two Catchable fatal error: Object of class Generator could not be converted to string in /in/NMGdN on line 27
Process exited with code 255.
Output for 5.4.9 - 5.4.45
Parse error: syntax error, unexpected '$v' (T_VARIABLE) in /in/NMGdN on line 25
Process exited with code 255.
Output for 5.3.19 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/NMGdN on line 3
Process exited with code 255.