3v4l.org

run code in 300+ PHP versions simultaneously
<?php $test = array( array( 'aaa' => 'AAA' ), array( 'bbb' => 'BBB' ), array( 'ccc' => 'CCC' ), ); $r = array(); foreach ($test as $item) { $r = array_merge($r, $item); } var_dump($r);

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)
8.3.60.0130.00718.28
8.3.50.0120.00721.88
8.3.40.0070.00718.47
8.3.30.0080.00618.88
8.3.20.0050.00319.97
8.3.10.0060.00320.39
8.3.00.0040.00419.26
8.2.180.0110.00716.50
8.2.170.0040.01122.96
8.2.160.0100.00320.37
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0000.01022.27
8.2.110.0090.00020.47
8.2.100.0080.00417.72
8.2.90.0060.00318.09
8.2.80.0000.00917.97
8.2.70.0040.00417.63
8.2.60.0030.00617.68
8.2.50.0110.00018.07
8.2.40.0030.00618.16
8.2.30.0040.00419.27
8.2.20.0000.00717.58
8.2.10.0080.00017.92
8.2.00.0030.00517.71
8.1.280.0070.01425.92
8.1.270.0000.00823.83
8.1.260.0080.00026.35
8.1.250.0030.00528.09
8.1.240.0060.00322.20
8.1.230.0040.00720.83
8.1.220.0040.00417.74
8.1.210.0040.00418.90
8.1.200.0060.00317.23
8.1.190.0000.00817.10
8.1.180.0000.00818.10
8.1.170.0070.00418.56
8.1.160.0040.00421.87
8.1.150.0040.00418.92
8.1.140.0040.00417.36
8.1.130.0030.00317.86
8.1.120.0040.00417.34
8.1.110.0000.00717.48
8.1.100.0000.00817.38
8.1.90.0000.00717.37
8.1.80.0040.00417.42
8.1.70.0000.00717.34
8.1.60.0050.00317.60
8.1.50.0000.00817.51
8.1.40.0000.00817.41
8.1.30.0030.00617.57
8.1.20.0060.00317.65
8.1.10.0030.00617.45
8.1.00.0040.00417.34
8.0.300.0000.00720.10
8.0.290.0000.00716.63
8.0.280.0030.00318.45
8.0.270.0030.00317.17
8.0.260.0000.00617.13
8.0.250.0030.00316.95
8.0.240.0060.00016.95
8.0.230.0030.00316.96
8.0.220.0000.00716.83
8.0.210.0000.00716.81
8.0.200.0070.00016.96
8.0.190.0030.00316.91
8.0.180.0040.00416.90
8.0.170.0000.00816.88
8.0.160.0000.00816.72
8.0.150.0070.00016.74
8.0.140.0000.00716.71
8.0.130.0000.00513.31
8.0.120.0000.00816.82
8.0.110.0000.00716.70
8.0.100.0070.00016.78
8.0.90.0030.00616.79
8.0.80.0110.01116.93
8.0.70.0030.00516.82
8.0.60.0040.00416.76
8.0.50.0000.00716.88
8.0.30.0180.00317.04
8.0.20.0090.01217.40
8.0.10.0000.00816.96
8.0.00.0100.00816.76
7.4.330.0050.00015.14
7.4.320.0070.00016.49
7.4.300.0000.00716.54
7.4.290.0030.00316.53
7.4.280.0060.00316.62
7.4.270.0070.00016.60
7.4.260.0030.00316.41
7.4.250.0040.00416.50
7.4.240.0030.00316.56
7.4.230.0000.00716.43
7.4.220.0100.01616.63
7.4.210.0040.01216.59
7.4.200.0000.00716.56
7.4.160.0080.00816.51
7.4.150.0170.00017.40
7.4.140.0110.00717.86
7.4.130.0130.00716.51
7.4.120.0080.01216.55
7.4.110.0100.01016.44
7.4.100.0060.01216.55
7.4.90.0150.00916.42
7.4.80.0120.00618.63
7.4.70.0130.00316.52
7.4.60.0160.00616.44
7.4.50.0000.00816.35
7.4.40.0110.00716.34
7.4.30.0100.00716.51
7.4.00.0090.00314.96
7.3.330.0000.00613.17
7.3.320.0030.00313.24
7.3.310.0050.00316.13
7.3.300.0030.00316.16
7.3.290.0060.00916.23
7.3.280.0120.00516.19
7.3.270.0120.00917.40
7.3.260.0060.01116.18
7.3.250.0100.00816.25
7.3.240.0000.01616.32
7.3.230.0070.01016.39
7.3.210.0310.00516.38
7.3.200.0090.01219.39
7.3.190.0150.00316.32
7.3.180.0100.00716.44
7.3.170.0060.01216.46
7.3.160.0110.00616.40
7.2.330.0060.01916.51
7.2.320.0090.00916.57
7.2.310.0060.01116.46
7.2.300.0080.00816.52
7.2.290.0140.01016.53
7.2.80.0030.00916.33
7.2.60.0000.01316.93
7.2.00.0090.00019.34
7.1.200.0060.00615.55
7.1.100.0120.00618.24
7.1.70.0070.00716.84
7.1.60.0140.01119.32
7.1.50.0100.01316.91
7.1.00.0000.08022.44
7.0.200.0000.00716.63
7.0.140.0030.07722.21
7.0.60.0030.05320.02
7.0.50.0130.05317.86
7.0.40.0030.04720.27
7.0.30.0330.06320.45
7.0.20.0270.05320.01
7.0.10.0100.07720.09
7.0.00.0130.07319.99
5.6.280.0000.07720.91
5.6.210.0100.07020.75
5.6.200.0030.09018.13
5.6.190.0100.04020.67
5.6.180.0430.04020.39
5.6.170.0270.05720.54
5.6.160.0100.07020.52
5.6.150.0070.06318.22
5.6.140.0100.03318.11
5.6.130.0000.09018.14
5.6.120.0070.05320.78
5.6.110.0030.09020.96
5.6.100.0100.05721.04
5.6.90.0130.06721.00
5.6.80.0170.04320.48
5.5.350.0170.07720.37
5.5.340.0100.04017.98
5.5.330.0130.08020.38
5.5.320.0330.04320.51
5.5.310.0130.04320.17
5.5.300.0030.05317.88
5.5.290.0000.08317.97
5.5.280.0100.07720.87
5.5.270.0030.04320.74
5.5.260.0100.07320.84
5.5.250.0070.08020.69
5.5.240.0770.03020.18
5.4.450.0070.06019.27
5.4.440.0900.04719.13
5.4.430.1000.05019.47
5.4.420.0930.05319.58
5.4.410.0970.05019.34
5.4.400.0830.05019.23
5.4.390.0030.06019.19
5.4.380.0470.05718.56
5.4.370.0770.05318.72
5.4.360.0130.05318.55
5.4.350.0130.05318.66
5.4.340.0500.07018.61
5.4.320.0040.04612.46
5.4.310.0050.03812.45
5.4.300.0030.03912.45
5.4.290.0040.03912.45
5.4.280.0060.03312.35
5.4.270.0030.03812.35
5.4.260.0060.03712.35
5.4.250.0070.03612.35
5.4.240.0060.03812.35
5.4.230.0070.03612.34
5.4.220.0060.03512.34
5.4.210.0060.03512.34
5.4.200.0090.03412.34
5.4.190.0040.03812.34
5.4.180.0050.03712.34
5.4.170.0060.03612.35
5.4.160.0050.03712.35
5.4.150.0070.03812.34
5.4.140.0070.04012.03
5.4.130.0040.03912.02
5.4.120.0060.03811.97
5.4.110.0020.03911.96
5.4.100.0060.03611.96
5.4.90.0050.03911.96
5.4.80.0050.04011.97
5.4.70.0070.04511.96
5.4.60.0060.03911.96
5.4.50.0080.04311.96
5.4.40.0090.03211.96
5.4.30.0060.04011.95
5.4.20.0060.03411.95
5.4.10.0100.03711.95
5.4.00.0070.03911.44
5.3.290.0050.04412.80
5.3.280.0050.03912.71
5.3.270.0070.04312.72
5.3.260.0040.04312.72
5.3.250.0070.03712.72
5.3.240.0100.04012.72
5.3.230.0050.04412.70
5.3.220.0040.03912.68
5.3.210.0050.03912.68
5.3.200.0090.03612.68
5.3.190.0070.03712.68
5.3.180.0050.03612.67
5.3.170.0070.04012.67
5.3.160.0050.03712.67
5.3.150.0060.04212.68
5.3.140.0070.03612.66
5.3.130.0060.04312.66
5.3.120.0070.03812.66
5.3.110.0020.04112.66
5.3.100.0050.04712.11
5.3.90.0090.04312.08
5.3.80.0130.03812.07
5.3.70.0030.03912.08
5.3.60.0090.03212.06
5.3.50.0090.03612.00
5.3.40.0060.03712.00
5.3.30.0070.03711.95
5.3.20.0060.04111.72
5.3.10.0080.03211.69
5.3.00.0040.03811.68
5.2.170.0060.0309.18
5.2.160.0070.0349.18
5.2.150.0040.0309.18
5.2.140.0060.0379.18
5.2.130.0070.0369.14
5.2.120.0090.0239.13
5.2.110.0020.0329.14
5.2.100.0070.0259.14
5.2.90.0100.0239.14
5.2.80.0060.0299.13
5.2.70.0050.0299.14
5.2.60.0070.0379.09
5.2.50.0020.0359.05
5.2.40.0070.0269.04
5.2.30.0070.0269.01
5.2.20.0040.0309.00
5.2.10.0040.0298.92
5.2.00.0050.0358.77
5.1.60.0060.0248.07
5.1.50.0040.0268.06
5.1.40.0040.0248.04
5.1.30.0050.0298.39
5.1.20.0050.0348.41
5.1.10.0030.0278.14
5.1.00.0040.0258.14
5.0.50.0050.0186.62
5.0.40.0040.0186.47
5.0.30.0030.0326.29
5.0.20.0040.0196.26
5.0.10.0030.0206.23
5.0.00.0020.0326.23
4.4.90.0030.0204.78
4.4.80.0030.0184.75
4.4.70.0020.0164.76
4.4.60.0020.0204.75
4.4.50.0040.0204.77
4.4.40.0030.0264.71
4.4.30.0020.0194.75
4.4.20.0000.0194.84
4.4.10.0020.0174.85
4.4.00.0010.0264.76
4.3.110.0020.0164.67
4.3.100.0050.0124.66
4.3.90.0040.0134.63
4.3.80.0030.0234.59
4.3.70.0020.0164.63
4.3.60.0010.0154.63
4.3.50.0020.0154.62
4.3.40.0040.0234.54
4.3.30.0020.0153.28
4.3.20.0020.0213.26
4.3.10.0030.0153.22
4.3.00.0030.0236.86

preferences:
38.57 ms | 401 KiB | 5 Q