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run code in 150+ php & hhvm versions
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<?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, $key_values) { return array_map(function ($value) { $seed[] = $value; }, $key_values); return $seed; }, $seed); }, $items); var_dump($new_items);
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(2) { [0]=> array(1) { ["Size"]=> NULL } [1]=> array(1) { ["Size"]=> NULL } }
Output for 5.2.3 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/9C6H4 on line 12
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.2
<br /> <b>Parse error</b>: syntax error, unexpected T_FUNCTION, expecting ')' in <b>/in/9C6H4</b> on line <b>12</b><br />
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
<br /> <b>Parse error</b>: parse error, unexpected T_FUNCTION, expecting ')' in <b>/in/9C6H4</b> on line <b>12</b><br />
Process exited with code 255.
Output for 4.3.2 - 4.3.4
<br /> <b>Parse error</b>: parse error, expecting `')'' in <b>/in/9C6H4</b> on line <b>12</b><br />
Process exited with code 255.