3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [ 1 => [ 1 => [ 'anna', 'alice' ], 2 => [ 'bob', 'bartold' ] ], 2 => [ 1 => [ 'carol' ], 2 => [ 'david' ] ] ]; $result = []; $iterator = new \RecursiveIteratorIterator( new \RecursiveArrayIterator($array) ); foreach ($iterator as => $row) { $result[] = $row; } var_dump($result);

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)
5.4.390.0170.05018.57
5.4.380.0070.06018.57
5.4.370.0030.06018.46
5.4.360.0100.05718.80
5.4.350.0130.05718.45
5.4.340.0100.05318.81
5.4.320.0130.05718.72
5.4.310.0130.05318.47
5.4.300.0100.05318.59
5.4.290.0170.05018.61
5.4.280.0100.06018.69
5.4.270.0200.04718.77
5.4.260.0200.05018.74
5.4.250.0330.04018.63
5.4.240.0130.05718.72
5.4.230.0230.06018.75
5.4.220.0200.05318.79
5.4.210.0100.05718.73
5.4.200.0170.05016.59
5.4.190.0100.05718.45
5.4.180.0100.05718.64
5.4.170.0170.06318.82
5.4.160.0370.04718.45
5.4.150.0100.06018.50
5.4.140.0130.06316.29
5.4.130.0130.06716.25
5.4.120.0170.04716.18
5.4.110.0130.06716.19
5.4.100.0230.04016.17
5.4.90.0230.04016.21
5.4.80.0130.05016.21
5.4.70.0100.05316.20
5.4.60.0200.04316.26
5.4.50.0200.04716.39
5.4.40.0130.05316.29
5.4.30.0270.05716.41
5.4.20.0130.05016.22
5.4.10.0170.04716.25
5.4.00.0200.04715.76
5.3.290.0200.05314.67
5.3.280.0170.05714.49
5.3.270.0170.05314.52
5.3.260.0170.05314.70
5.3.250.0030.06314.59
5.3.240.0230.05014.54
5.3.230.0230.04714.55
5.3.220.0200.06714.62
5.3.210.0100.06014.54
5.3.200.0230.04714.48
5.3.190.0200.05014.55
5.3.180.0130.07014.48
5.3.170.0100.06014.50
5.3.160.0270.04014.48
5.3.150.0270.06714.60
5.3.140.0100.07014.55
5.3.130.0100.06014.54
5.3.120.0100.05714.55
5.3.110.0070.06014.60
5.3.100.0170.05014.06
5.3.90.0230.05314.03
5.3.80.0100.05714.00
5.3.70.0070.06314.10
5.3.60.0200.04314.10
5.3.50.0100.05313.91
5.3.40.0100.05313.89
5.3.30.0100.05713.88
5.3.20.0200.04013.66
5.3.10.0130.05013.66
5.3.00.0130.05013.71
5.2.170.0100.04311.07
5.2.160.0070.04311.12
5.2.150.0030.05311.09
5.2.140.0130.04011.17
5.2.130.0130.04011.24
5.2.120.0130.03711.05
5.2.110.0100.04311.09
5.2.100.0030.05011.09
5.2.90.0200.04311.06
5.2.80.0100.04311.15
5.2.70.0130.04011.04
5.2.60.0100.04011.09
5.2.50.0130.04710.95
5.2.40.0130.04711.03
5.2.30.0170.04711.12
5.2.20.0170.04710.93
5.2.10.0070.04310.96
5.2.00.0100.04010.86
5.1.60.0030.0409.95
5.1.50.0100.0379.95
5.1.40.0100.0339.93
5.1.30.0130.03710.45
5.1.20.0100.03710.41
5.1.10.0130.03310.13
5.1.00.0030.04310.10
5.0.50.0130.0278.66
5.0.40.0070.0278.46
5.0.30.0100.0408.25
5.0.20.0130.0308.29
5.0.10.0070.0278.28
5.0.00.0070.0408.15
4.4.90.0070.0235.83
4.4.80.0000.0275.89
4.4.70.0070.0235.86
4.4.60.0070.0205.91
4.4.50.0100.0205.91
4.4.40.0070.0375.81
4.4.30.0000.0275.85
4.4.20.0000.0275.93
4.4.10.0030.0235.97
4.4.00.0030.0375.93
4.3.110.0000.0335.84
4.3.100.0100.0235.87
4.3.90.0030.0235.80
4.3.80.0000.0405.84
4.3.70.0030.0235.80
4.3.60.0070.0305.93
4.3.50.0100.0205.78
4.3.40.0070.0335.79
4.3.30.0030.0234.89
4.3.20.0000.0274.89
4.3.10.0070.0234.89
4.3.00.0000.0237.09

preferences:
148.32 ms | 1398 KiB | 7 Q