3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = [ 'a' => [ 'a1' => 'a1', 'a2' => 'a2', 'a3' => 'a3', ], 'b' => [ 'b1' => 'b1', 'b2' => 'b2', 'b3' => 'b3', ], ]; $it = new RecursiveIteratorIterator(new ArrayIterator($a)); $b = []; foreach ($it as $key => $value) { $b[$key] = $value; } var_dump($b);

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)
8.3.60.0040.01818.18
8.3.50.0160.00321.00
8.3.40.0150.00318.84
8.3.30.0080.00818.85
8.3.20.0030.00620.35
8.3.10.0040.00421.89
8.3.00.0080.00018.00
8.2.180.0150.00016.63
8.2.170.0120.00322.96
8.2.160.0070.00720.39
8.2.150.0000.00824.18
8.2.140.0050.00324.66
8.2.130.0000.00826.16
8.2.120.0040.00417.50
8.2.110.0080.00020.39
8.2.100.0030.00717.84
8.2.90.0000.00819.11
8.2.80.0060.00317.97
8.2.70.0030.00517.50
8.2.60.0080.00017.93
8.2.50.0000.00918.07
8.2.40.0040.00419.28
8.2.30.0000.00720.64
8.2.20.0080.00017.57
8.2.10.0000.00818.06
8.2.00.0080.00018.13
8.1.280.0150.00425.92
8.1.270.0100.01022.15
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0090.00023.90
8.1.230.0030.00822.65
8.1.220.0000.00817.80
8.1.210.0000.00818.77
8.1.200.0030.00617.23
8.1.190.0000.00817.23
8.1.180.0070.00018.10
8.1.170.0060.00318.23
8.1.160.0050.00321.88
8.1.150.0000.00718.88
8.1.140.0040.00717.42
8.1.130.0000.00817.57
8.1.120.0000.00817.49
8.1.110.0040.00417.41
8.1.100.0000.00717.30
8.1.90.0040.00717.37
8.1.80.0030.00617.46
8.1.70.0070.00017.40
8.1.60.0040.00417.42
8.1.50.0080.00017.42
8.1.40.0030.00717.57
8.1.30.0040.00417.59
8.1.20.0020.00517.68
8.1.10.0000.00717.51
8.1.00.0020.00517.43
8.0.300.0040.00418.77
8.0.290.0000.00716.73
8.0.280.0070.00018.40
8.0.270.0030.00517.17
8.0.260.0030.00317.13
8.0.250.0040.00417.02
8.0.240.0000.00816.96
8.0.230.0070.00016.93
8.0.220.0030.00316.96
8.0.210.0020.00516.88
8.0.200.0000.00716.88
8.0.190.0060.00317.03
8.0.180.0040.00416.92
8.0.170.0000.00716.96
8.0.160.0030.00316.93
8.0.150.0000.00716.80
8.0.140.0040.00416.80
8.0.130.0060.00013.38
8.0.120.0040.00416.89
8.0.110.0060.00316.94
8.0.100.0000.00716.89
8.0.90.0030.00416.90
8.0.80.0120.00616.98
8.0.70.0040.00416.97
8.0.60.0070.00016.93
8.0.50.0040.00416.87
8.0.30.0110.00817.13
8.0.20.0090.01117.40
8.0.10.0070.00016.91
8.0.00.0080.01116.66
7.4.330.0050.00015.08
7.4.320.0000.00716.48
7.4.300.0070.00316.51
7.4.290.0030.00616.53
7.4.280.0050.00516.51
7.4.270.0030.00316.62
7.4.260.0050.00316.65
7.4.250.0000.00716.42
7.4.240.0000.00716.51
7.4.230.0020.00516.41
7.4.220.0130.00916.48
7.4.210.0040.01016.70
7.4.200.0040.00416.62
7.4.160.0040.01116.46
7.4.150.0130.00317.40
7.4.140.0140.00617.86
7.4.130.0100.00816.62
7.4.120.0120.00716.54
7.4.110.0110.00716.36
7.4.100.0090.01216.47
7.4.90.0090.00916.52
7.4.80.0060.01519.39
7.4.70.0060.01616.50
7.4.60.0040.01616.55
7.4.50.0090.00016.60
7.4.40.0100.00716.51
7.4.30.0060.01416.61
7.4.00.0070.00715.14
7.3.330.0020.00213.18
7.3.320.0050.00013.21
7.3.310.0000.00716.41
7.3.300.0000.00616.26
7.3.290.0110.00716.26
7.3.280.0090.01016.28
7.3.270.0090.00817.40
7.3.260.0090.00916.44
7.3.250.0100.00716.39
7.3.240.0060.01016.45
7.3.230.0090.00916.39
7.3.210.0150.00016.39
7.3.200.0070.01016.26
7.3.190.0100.00716.43
7.3.180.0130.00316.31
7.3.170.0150.00316.28
7.3.160.0100.00616.65
7.2.330.0140.00316.44
7.2.320.0100.01016.66
7.2.310.0030.01316.31
7.2.300.0120.00616.55
7.2.290.0100.01016.24
7.2.110.0120.00916.27
7.2.100.0180.00316.67
7.2.90.0070.01116.68
7.2.80.0190.00016.72
7.2.70.0140.00716.56
7.2.60.0060.01116.84
7.2.50.0580.00916.79
7.2.40.0170.00016.73
7.2.30.0110.00716.92
7.2.20.0150.00316.90
7.2.10.0120.00816.85
7.2.00.0060.01118.05
7.1.230.0100.00715.80
7.1.220.0100.00315.57
7.1.210.0080.00615.58
7.1.200.0080.00615.67
7.1.190.0130.00315.64
7.1.180.0490.01015.76
7.1.170.0080.00515.70
7.1.160.0130.00015.66
7.1.150.0070.01015.66
7.1.140.0130.00215.79
7.1.130.0160.00415.64
7.1.120.0300.01115.65
7.1.110.0110.00315.82
7.1.100.0080.00616.95
7.1.90.0030.01215.61
7.1.80.0110.00415.89
7.1.70.0100.00116.43
7.1.60.0090.01317.49
7.1.50.0090.01116.40
7.1.40.0190.00015.84
7.1.30.0070.01115.63
7.1.20.0090.01315.67
7.1.10.0100.00615.68
7.1.00.0060.04018.94
7.0.310.0150.00415.27
7.0.300.0090.00615.13
7.0.290.0110.00315.11
7.0.280.0200.00715.27
7.0.270.0260.01315.36
7.0.260.0080.00815.24
7.0.250.0070.00715.13
7.0.240.0150.00315.21
7.0.230.0000.01315.16
7.0.220.0140.00315.09
7.0.210.0150.00315.33
7.0.200.0050.01116.05
7.0.190.0050.00815.21
7.0.180.0090.00915.46
7.0.170.0080.00915.41
7.0.160.0110.00215.29
7.0.150.0100.00615.17
7.0.140.0130.00315.29
7.0.130.0090.00515.43
7.0.120.0160.00315.32
7.0.110.0110.00715.40
7.0.100.0080.00515.42
7.0.90.0090.00915.43
7.0.80.0060.00915.36
7.0.70.0310.00715.37
7.0.60.0070.04317.62
7.0.50.0090.03416.64
7.0.40.0140.03616.61
7.0.30.0180.03816.72
7.0.20.0170.04316.73
7.0.10.0120.02516.74
7.0.00.0070.02416.64
5.6.380.0090.00914.46
5.6.370.0080.00614.63
5.6.360.0090.00514.36
5.6.350.0040.01214.35
5.6.340.0150.00014.27
5.6.330.0040.01114.24
5.6.320.0110.00414.15
5.6.310.0120.00414.55
5.6.300.0060.00614.14
5.6.290.0120.00614.32
5.6.280.0040.03917.64
5.6.270.0120.00414.23
5.6.260.0130.00313.98
5.6.250.0130.00314.02
5.6.240.0130.00414.24
5.6.230.0110.00314.29
5.6.220.0100.00314.38
5.6.210.0100.03717.51
5.6.200.0080.02216.20
5.6.190.0120.01817.44
5.6.180.0300.03517.42
5.6.170.0170.02217.50
5.6.160.0100.04517.39
5.6.150.0040.04516.17
5.6.140.0120.03916.09
5.6.130.0100.03616.30
5.6.120.0080.03017.67
5.6.110.0090.03917.64
5.6.100.0080.02917.61
5.6.90.0030.05117.58
5.6.80.0050.04417.34
5.6.70.0060.01114.14
5.6.60.0120.00214.13
5.6.50.0070.01014.35
5.6.40.0060.00914.23
5.6.30.0110.00414.22
5.6.20.0090.00514.22
5.6.10.0130.00314.11
5.6.00.0130.00314.17
5.5.380.0090.00312.79
5.5.370.0060.00912.79
5.5.360.0150.00012.79
5.5.350.0210.03716.61
5.5.340.0040.02115.41
5.5.330.0060.02116.59
5.5.320.0110.04016.51
5.5.310.0150.04316.53
5.5.300.0120.03815.37
5.5.290.0080.04015.37
5.5.280.0060.03616.83
5.5.270.0070.04316.84
5.5.260.0170.03516.79
5.5.250.0090.04316.68
5.5.240.0110.03816.51
5.5.230.0060.00312.79
5.5.220.0120.00012.79
5.5.210.0030.00612.79
5.5.200.0100.00012.79
5.5.190.0040.00712.79
5.5.180.0090.00412.79
5.5.170.0070.00714.01
5.5.160.0070.00712.79
5.5.150.0060.00612.79
5.5.140.0110.00412.79
5.5.130.0120.00012.79
5.5.120.0050.00712.79
5.5.110.0060.00312.79
5.5.100.0000.01112.79
5.5.90.0120.00012.79
5.5.80.0080.00512.79
5.5.70.0040.00812.79
5.5.60.0060.00612.79
5.5.50.0040.00812.79
5.5.40.0060.00612.79
5.5.30.0100.00412.79
5.5.20.0100.00212.79
5.5.10.0110.00012.79
5.5.00.0070.00512.79
5.4.450.0150.03216.00
5.4.440.0280.02316.19
5.4.430.0090.03916.24
5.4.420.0200.03416.12
5.4.410.0140.04116.13
5.4.400.0150.03216.04
5.4.390.0140.03415.81
5.4.380.0160.03616.05
5.4.370.0220.03516.03
5.4.360.0190.03415.80
5.4.350.0090.04516.02
5.4.340.0170.04015.81
5.4.330.0050.00512.79
5.4.320.0150.03316.08
5.4.310.0160.03515.81
5.4.300.0180.02615.96
5.4.290.0230.03515.96
5.4.280.0210.03015.96
5.4.270.0140.03415.89
5.4.260.0190.03716.08
5.4.250.0160.03916.00
5.4.240.0170.02815.96
5.4.230.0150.03516.04
5.4.220.0200.02716.02
5.4.210.0150.02916.07
5.4.200.0200.02516.04
5.4.190.0140.04115.96
5.4.180.0130.04016.03
5.4.170.0230.02815.81
5.4.160.0120.03515.91
5.4.150.0270.02515.96
5.4.140.0150.02814.75
5.4.130.0110.03414.68
5.4.120.0140.02914.59
5.4.110.0160.03214.65
5.4.100.0170.03014.70
5.4.90.0160.03614.52
5.4.80.0200.03314.64
5.4.70.0130.04214.61
5.4.60.0140.02014.62
5.4.50.0200.03514.50
5.4.40.0200.02014.56
5.4.30.0170.02214.67
5.4.20.0130.02514.68
5.4.10.0150.01914.61
5.4.00.0070.00412.79

preferences:
46.87 ms | 401 KiB | 5 Q