3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function dot($array, $prepend = '') { $results = array(); foreach ($array as $key => $value) { if (is_array($value)) { $results = array_merge($results, dot($value, $prepend.$key.'.')); print_r($value); } else { $results[$prepend.$key] = $value; } } return $results; } $array = [ 'foo' => [], 'bar' => [ 'baz' => 1 ] ]; print_r(dot($array));
based on jllYT
Output for 5.4.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Array ( ) Array ( [baz] => 1 ) Array ( [bar.baz] => 1 )
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/i9mY0 on line 22
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/i9mY0 on line 22
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/i9mY0 on line 22
Process exited with code 255.