3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $items = array( array( array("Color" => "Blue"), array("Size" => "S") ), array( array("Color" => "Blue"), array("Size" => "M") ) ); $new_items = array_map(function ($item) { $seed = array(); return array_reduce($item, function ($seed, $value) { return array_map(function ($value) { $seed[] = $value; }, $key_values); return $seed; }, array()); }, $items); var_dump($new_items);
Output for 5.3.0 - 5.6.28, 7.0.0 - 7.1.0
Notice: Undefined variable: key_values in /in/K5IDA on line 18 Warning: array_map(): Argument #2 should be an array in /in/K5IDA on line 18 Notice: Undefined variable: key_values in /in/K5IDA on line 18 Warning: array_map(): Argument #2 should be an array in /in/K5IDA on line 18 Notice: Undefined variable: key_values in /in/K5IDA on line 18 Warning: array_map(): Argument #2 should be an array in /in/K5IDA on line 18 Notice: Undefined variable: key_values in /in/K5IDA on line 18 Warning: array_map(): Argument #2 should be an array in /in/K5IDA on line 18 array(2) { [0]=> NULL [1]=> NULL }
Output for hhvm-3.10.0 - 3.12.0
Notice: Undefined variable: key_values in /in/K5IDA on line 18 Warning: array_map(): Argument #2 should be an array or collection Notice: Undefined variable: key_values in /in/K5IDA on line 18 Warning: array_map(): Argument #2 should be an array or collection Notice: Undefined variable: key_values in /in/K5IDA on line 18 Warning: array_map(): Argument #2 should be an array or collection Notice: Undefined variable: key_values in /in/K5IDA on line 18 Warning: array_map(): Argument #2 should be an array or collection array(2) { [0]=> NULL [1]=> NULL }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/K5IDA on line 12
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 T_FUNCTION, expecting ')' in /in/K5IDA on line 12
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/K5IDA on line 12
Process exited with code 255.