3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(array_merge_recursive( array('dupa' => array( 1,2,3 )), array('dupa' => null)));

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)
8.3.60.0090.00616.50
8.3.50.0090.01222.95
8.3.40.0090.00618.65
8.3.30.0120.00318.93
8.3.20.0070.00020.22
8.3.10.0040.00421.85
8.3.00.0060.00319.26
8.2.180.0120.00316.32
8.2.170.0090.00622.96
8.2.160.0070.00720.35
8.2.150.0070.00024.18
8.2.140.0080.00024.66
8.2.130.0140.00026.16
8.2.120.0040.00421.02
8.2.110.0090.00622.12
8.2.100.0060.00617.66
8.2.90.0040.00419.17
8.2.80.0000.00817.97
8.2.70.0040.00417.49
8.2.60.0050.00317.80
8.2.50.0050.00318.07
8.2.40.0050.00518.16
8.2.30.0040.00417.75
8.2.20.0040.00417.55
8.2.10.0040.00417.83
8.2.00.0080.00017.46
8.1.280.0070.01025.92
8.1.270.0040.00423.76
8.1.260.0050.00226.35
8.1.250.0000.00728.09
8.1.240.0060.00323.74
8.1.230.0040.00818.93
8.1.220.0080.00017.74
8.1.210.0080.00018.77
8.1.200.0030.00617.22
8.1.190.0050.00317.00
8.1.180.0030.00618.10
8.1.170.0030.00618.50
8.1.160.0000.00721.81
8.1.150.0070.00018.80
8.1.140.0060.00317.19
8.1.130.0030.00317.75
8.1.120.0050.00317.34
8.1.110.0050.00317.36
8.1.100.0030.00317.34
8.1.90.0040.00417.21
8.1.80.0020.00517.35
8.1.70.0030.00317.32
8.1.60.0060.00317.42
8.1.50.0040.00417.45
8.1.40.0050.00217.29
8.1.30.0090.00017.54
8.1.20.0050.00217.48
8.1.10.0000.00717.36
8.1.00.0000.00817.29
8.0.300.0040.00418.77
8.0.290.0070.00016.63
8.0.280.0030.00318.31
8.0.270.0030.00317.11
8.0.260.0000.00617.15
8.0.250.0030.00316.66
8.0.240.0040.00416.69
8.0.230.0070.00016.81
8.0.220.0050.00216.67
8.0.210.0030.00316.82
8.0.200.0030.00316.75
8.0.190.0050.00316.84
8.0.180.0040.00416.71
8.0.170.0030.00616.82
8.0.160.0040.00416.86
8.0.150.0070.00016.64
8.0.140.0000.01116.76
8.0.130.0060.00013.14
8.0.120.0040.00416.73
8.0.110.0000.00816.69
8.0.100.0000.00716.54
8.0.90.0070.00016.82
8.0.80.0150.00316.73
8.0.70.0050.00316.72
8.0.60.0050.00316.54
8.0.50.0040.00416.76
8.0.30.0140.00616.82
8.0.20.0160.01117.40
8.0.10.0070.00016.81
8.0.00.0080.01016.64
7.4.330.0000.00515.00
7.4.320.0040.00416.38
7.4.300.0040.00416.43
7.4.290.0040.00416.38
7.4.280.0000.00716.29
7.4.270.0000.00716.36
7.4.260.0030.00316.33
7.4.250.0000.00716.29
7.4.240.0020.00516.36
7.4.230.0070.00016.57
7.4.220.0060.01916.31
7.4.210.0100.01016.54
7.4.200.0000.00716.48
7.4.160.0080.00816.35
7.4.150.0110.00717.40
7.4.140.0090.00817.86
7.4.130.0080.01016.46
7.4.120.0050.01216.34
7.4.110.0030.01416.52
7.4.100.0100.00716.54
7.4.90.0030.01316.48
7.4.80.0190.00019.39
7.4.70.0070.01516.46
7.4.60.0040.01516.25
7.4.50.0000.00516.06
7.4.40.0110.00816.31
7.4.30.0090.00916.21
7.4.00.0090.00614.77
7.3.330.0060.00012.89
7.3.320.0060.00013.05
7.3.310.0030.00316.18
7.3.300.0030.00316.12
7.3.290.0070.00716.09
7.3.280.0070.00816.14
7.3.270.0060.01317.40
7.3.260.0040.01816.42
7.3.250.0090.00816.36
7.3.240.0130.00516.28
7.3.230.0060.01216.39
7.3.210.0090.00916.14
7.3.200.0070.01019.39
7.3.190.0060.01016.20
7.3.180.0030.01316.13
7.3.170.0130.00316.27
7.3.160.0100.00616.15
7.3.00.0040.01116.52
7.2.330.0180.00316.34
7.2.320.0060.01316.60
7.2.310.0090.00916.40
7.2.300.0090.01416.55
7.2.290.0060.01116.48
7.2.130.0060.00616.77
7.2.120.0100.00716.73
7.2.110.0080.00516.70
7.2.100.0060.00616.81
7.2.90.0040.01116.73
7.2.80.0110.00316.45
7.2.70.0070.00416.68
7.2.60.0100.00316.43
7.2.50.0030.00716.70
7.2.40.0000.01616.75
7.2.30.0030.00616.73
7.2.20.0030.01016.75
7.2.10.0090.00616.75
7.2.00.0030.01017.67
7.1.250.0060.00615.70
7.1.240.0060.00315.57
7.1.230.0000.01215.59
7.1.220.0030.00715.45
7.1.210.0120.00315.77
7.1.200.0040.00715.51
7.1.190.0030.01015.75
7.1.180.0000.01015.43
7.1.170.0030.00915.36
7.1.160.0060.00715.51
7.1.150.0000.01315.36
7.1.140.0050.00315.50
7.1.130.0030.00715.78
7.1.120.0070.00315.80
7.1.110.0070.00715.60
7.1.100.0020.01216.88
7.1.90.0040.00815.72
7.1.80.0030.01015.80
7.1.70.0020.00616.38
7.1.60.0060.01317.52
7.1.50.0020.01316.09
7.1.40.0060.00915.59
7.1.30.0070.00715.50
7.1.20.0080.00815.66
7.1.10.0030.00615.65
7.1.00.0050.04019.00
7.0.330.0000.01214.95
7.0.320.0100.00315.13
7.0.310.0040.01115.29
7.0.300.0070.00715.10
7.0.290.0060.00515.10
7.0.280.0040.01115.24
7.0.270.0070.00715.37
7.0.260.0050.00315.23
7.0.250.0070.01015.25
7.0.240.0060.00915.43
7.0.230.0070.00315.54
7.0.220.0030.00915.18
7.0.210.0090.00315.21
7.0.200.0080.00515.94
7.0.190.0040.00815.36
7.0.180.0030.00715.09
7.0.170.0060.00315.42
7.0.160.0060.00915.32
7.0.150.0070.00315.25
7.0.140.0040.04118.45
7.0.130.0140.00015.12
7.0.120.0060.00915.20
7.0.110.0100.00315.29
7.0.100.0090.00015.11
7.0.90.0030.01015.16
7.0.80.0040.01114.87
7.0.70.0000.01114.98
7.0.60.0070.02017.68
7.0.50.0060.02116.60
7.0.40.0050.02916.70
7.0.30.0220.02316.89
7.0.20.0180.03816.72
7.0.10.0050.04516.64
7.0.00.0070.03816.78
5.6.380.0000.01213.99
5.6.370.0030.00914.48
5.6.360.0000.00914.20
5.6.350.0000.01314.08
5.6.340.0080.00813.97
5.6.330.0070.00714.37
5.6.320.0100.00613.79
5.6.310.0030.00714.46
5.6.300.0060.00914.17
5.6.290.0060.00614.02
5.6.280.0030.04017.43
5.6.270.0100.00014.34
5.6.260.0040.00913.99
5.6.250.0120.00314.10
5.6.240.0090.00613.89
5.6.230.0090.00614.28
5.6.220.0030.00614.26
5.6.210.0140.03017.38
5.6.200.0080.04516.26
5.6.190.0060.02517.32
5.6.180.1880.02517.24
5.6.170.0150.04317.42
5.6.160.0080.02517.19
5.6.150.0090.03716.23
5.6.140.0090.03916.23
5.6.130.0070.04816.12
5.6.120.0070.03017.59
5.6.110.0050.02117.60
5.6.100.0050.04917.53
5.6.90.0080.04717.66
5.6.80.0120.03717.36
5.6.70.0160.04217.38
5.6.60.0090.00313.88
5.6.50.0100.00313.77
5.6.40.0070.00713.95
5.6.30.0070.00714.20
5.6.20.0030.01014.23
5.6.10.0060.00314.11
5.6.00.0030.01013.86
5.5.380.0060.00311.18
5.5.370.0060.00011.18
5.5.360.0040.00711.18
5.5.350.0030.04315.77
5.5.340.0050.04114.60
5.5.330.0080.03015.80
5.5.320.0160.01815.70
5.5.310.0150.04215.73
5.5.300.0000.02614.59
5.5.290.0050.02014.58
5.5.280.0120.02515.97
5.5.270.0030.04316.00
5.5.260.0000.05216.02
5.5.250.0100.03615.88
5.5.240.0050.03915.75
5.5.230.0000.01311.18
5.5.220.0080.00011.18
5.5.210.0030.00711.18
5.5.200.0030.00311.18
5.5.190.0090.00311.18
5.5.180.0070.00011.18
5.5.170.0030.00711.18
5.5.160.0030.00611.18
5.5.150.0000.01111.18
5.5.140.0080.00311.18
5.5.130.0060.00611.18
5.5.120.0030.00711.18
5.5.110.0030.00911.18
5.5.100.0000.01011.18
5.5.90.0040.00711.18
5.5.80.0070.00311.18
5.5.70.0000.00811.18
5.5.60.0100.00311.18
5.5.50.0080.00311.18
5.5.40.0000.01211.18
5.5.30.0060.00611.18
5.5.20.0000.01511.18
5.5.10.0030.00911.18
5.5.00.0000.01111.18
5.4.450.0480.03015.29
5.4.440.0080.03115.31
5.4.430.0400.03015.40
5.4.420.0070.03015.38
5.4.410.0410.02815.11
5.4.400.0280.03015.15
5.4.390.0030.03415.01
5.4.380.0150.02314.87
5.4.370.0020.02414.92
5.4.360.0100.01814.90
5.4.350.0020.02111.57
5.4.340.0070.02111.57
5.4.330.0030.01011.18
5.4.320.0030.02211.81
5.4.310.0030.02211.81
5.4.300.0020.02511.81
5.4.290.0020.02511.81
5.4.280.0040.01911.76
5.4.270.0050.02011.76
5.4.260.0050.02311.76
5.4.250.0030.02411.76
5.4.240.0050.02211.76
5.4.230.0050.02211.76
5.4.220.0040.02311.76
5.4.210.0040.02111.76
5.4.200.0060.02111.76
5.4.190.0040.03011.76
5.4.180.0060.02411.75
5.4.170.0090.02011.76
5.4.160.0070.02011.76
5.4.150.0070.02411.76
5.4.140.0020.02611.60
5.4.130.0050.02311.59
5.4.120.0070.02011.57
5.4.110.0030.02611.57
5.4.100.0080.02011.57
5.4.90.0050.02211.57
5.4.80.0020.02411.57
5.4.70.0060.02111.57
5.4.60.0040.02311.57
5.4.50.0050.02011.57
5.4.40.0040.02711.56
5.4.30.0080.01811.56
5.4.20.0020.02211.56
5.4.10.0060.01911.56
5.4.00.0050.01811.31
5.3.290.0040.02611.99
5.3.280.0100.01811.94
5.3.270.0070.02311.95
5.3.260.0050.02211.95
5.3.250.0080.01911.95
5.3.240.0060.02311.95
5.3.230.0040.02511.94
5.3.220.0050.02511.93
5.3.210.0100.02111.93
5.3.200.0070.02411.93
5.3.190.0050.02111.93
5.3.180.0070.02111.92
5.3.170.0050.02211.92
5.3.160.0030.02211.92
5.3.150.0060.02211.92
5.3.140.0060.02411.92
5.3.130.0020.02311.92
5.3.120.0040.02311.92
5.3.110.0040.02511.92
5.3.100.0040.02311.65
5.3.90.0030.02311.63
5.3.80.0050.02611.62
5.3.70.0040.02311.63
5.3.60.0040.02811.62
5.3.50.0040.02111.59
5.3.40.0040.02011.59
5.3.30.0060.02511.56
5.3.20.0070.02311.45
5.3.10.0040.02511.43
5.3.00.0070.02511.42
5.2.170.0020.02610.18
5.2.160.0040.02110.18
5.2.150.0030.02410.18
5.2.140.0040.02110.18
5.2.130.0050.01710.15
5.2.120.0040.02010.16
5.2.110.0090.01410.16
5.2.100.0060.01710.16
5.2.90.0050.01610.16
5.2.80.0020.02010.15
5.2.70.0040.01810.15
5.2.60.0050.02410.13
5.2.50.0060.01410.11
5.2.40.0060.01510.10
5.2.30.0040.01610.09
5.2.20.0060.01710.09
5.2.10.0010.02010.05
5.2.00.0030.0189.97
5.1.60.0030.0159.62
5.1.50.0020.0169.62
5.1.40.0030.0179.61
5.1.30.0040.0139.79
5.1.20.0020.0239.79
5.1.10.0080.0159.65
5.1.00.0040.0149.65
5.0.50.0020.0208.90
5.0.40.0030.0128.82
5.0.30.0050.0218.73
5.0.20.0040.0158.72
5.0.10.0050.0128.71
5.0.00.0030.0188.70
4.4.90.0020.0107.98
4.4.80.0030.0137.96
4.4.70.0030.0127.97
4.4.60.0040.0077.96
4.4.50.0040.0207.97
4.4.40.0020.0167.94
4.4.30.0020.0127.97
4.4.20.0030.0088.01
4.4.10.0020.0138.01
4.4.00.0020.0187.97
4.3.110.0040.0097.92
4.3.100.0020.0127.92
4.3.90.0020.0097.90
4.3.80.0020.0147.88
4.3.70.0020.0097.90
4.3.60.0040.0127.90
4.3.50.0010.0117.90
4.3.40.0050.0127.86
4.3.30.0010.0147.23
4.3.20.0030.0097.22
4.3.10.0000.0127.19
4.3.00.0070.0139.17

preferences:
38.04 ms | 401 KiB | 5 Q