3v4l.org

run code in 300+ PHP versions simultaneously
<?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 function () { $seed[] = $value; }, $key_values); return $seed; }, array()); }, $items); var_dump($new_items);

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
5.4.250.0120.05612.39
5.4.240.0070.04312.39
5.4.230.0060.04112.38
5.4.220.0060.04112.38
5.4.210.0060.03612.38
5.4.200.0070.03912.38
5.4.190.0050.04012.38
5.4.180.0070.04212.38
5.4.170.0090.03912.39
5.4.160.0090.03612.38
5.4.150.0080.03412.38
5.4.140.0080.03912.07
5.4.130.0060.03712.05
5.4.120.0050.03712.02
5.4.110.0050.04012.01
5.4.100.0050.03612.01
5.4.90.0040.04212.01
5.4.80.0050.03812.01
5.4.70.0060.03812.01
5.4.60.0050.03812.01
5.4.50.0070.03612.01
5.4.40.0090.03411.99
5.4.30.0050.03711.99
5.4.20.0060.03611.99
5.4.10.0040.03811.99
5.4.00.0070.04511.48
5.3.280.0050.04212.71
5.3.270.0090.03812.72
5.3.260.0070.04012.72
5.3.250.0060.03812.72
5.3.240.0050.03912.72
5.3.230.0070.03812.70
5.3.220.0060.03812.68
5.3.210.0070.04212.68
5.3.200.0070.04012.68
5.3.190.0100.03612.67
5.3.180.0090.03612.67
5.3.170.0090.03512.67
5.3.160.0050.03812.67
5.3.150.0090.04312.67
5.3.140.0080.03812.66
5.3.130.0100.03612.66
5.3.120.0070.04112.66
5.3.110.0070.03912.66
5.3.100.0070.03612.12
5.3.90.0070.03812.09
5.3.80.0070.03912.08
5.3.70.0100.03912.08
5.3.60.0080.03612.06
5.3.50.0050.03612.01
5.3.40.0070.03812.01
5.3.30.0060.03911.98
5.3.20.0080.03611.75
5.3.10.0070.03411.71
5.3.00.0100.03211.69

preferences:
141.3 ms | 1386 KiB | 7 Q