3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['a' => null,'b' => null,c => null,]; $b = [b=>'x']; var_dump(array_merge($a, $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)
8.3.70.0070.00716.58
8.3.60.0150.00618.28
8.3.50.0120.01021.24
8.3.40.0140.00318.65
8.3.30.0040.01118.84
8.3.20.0050.00320.16
8.3.10.0070.00021.73
8.3.00.0040.00419.45
8.2.180.0140.00425.92
8.2.170.0110.00422.96
8.2.160.0000.01420.28
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0000.00726.16
8.2.120.0030.00617.63
8.2.110.0070.00421.03
8.2.100.0090.00317.84
8.2.90.0040.00417.84
8.2.80.0060.00317.97
8.2.70.0090.00017.63
8.2.60.0030.00518.04
8.2.50.0040.00418.07
8.2.40.0030.00621.06
8.2.30.0060.00319.82
8.2.20.0080.00017.81
8.2.10.0050.00217.99
8.2.00.0040.00418.17
8.1.280.0120.00325.92
8.1.270.0000.00720.20
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0000.00922.61
8.1.230.0080.00420.87
8.1.220.0090.00317.74
8.1.210.0030.00618.77
8.1.200.0070.00317.47
8.1.190.0040.00417.23
8.1.180.0040.00418.10
8.1.170.0000.00818.63
8.1.160.0070.00021.93
8.1.150.0000.00718.73
8.1.140.0070.00417.44
8.1.130.0070.00017.55
8.1.120.0000.00717.24
8.1.110.0000.00817.25
8.1.100.0020.00517.28
8.1.90.0000.00817.34
8.1.80.0080.00017.28
8.1.70.0030.00517.26
8.1.60.0000.00717.50
8.1.50.0030.00517.43
8.1.40.0040.00417.40
8.1.30.0000.00817.52
8.1.20.0050.00317.55
8.1.10.0040.00417.50
8.1.00.0050.00317.34
8.0.300.0000.00719.91
8.0.290.0040.00416.75
8.0.280.0030.00318.33
8.0.270.0030.00317.16
8.0.260.0050.00317.17
8.0.250.0000.00717.00
8.0.240.0070.00316.84
8.0.230.0030.00317.05
8.0.220.0070.00016.92
8.0.210.0000.00716.81
8.0.200.0060.00017.00
8.0.190.0060.00617.03
8.0.180.0000.00816.95
8.0.170.0030.00517.02
8.0.160.0040.00416.96
8.0.150.0000.00716.96
8.0.140.0000.00716.82
8.0.130.0060.00013.33
8.0.120.0030.00516.80
8.0.110.0040.00416.87
8.0.100.0000.00716.74
8.0.90.0050.00316.82
8.0.80.0060.00916.98
8.0.70.0000.00716.76
8.0.60.0070.00016.81
8.0.50.0030.00616.84
8.0.30.0140.00717.02
8.0.20.0060.01217.40
8.0.10.0040.00416.86
8.0.00.0070.01116.79
7.4.330.0030.00315.08
7.4.320.0000.00716.49
7.4.300.0000.00716.63
7.4.290.0040.00416.60
7.4.280.0000.00716.50
7.4.270.0030.00316.43
7.4.260.0040.00416.57
7.4.250.0040.00416.55
7.4.240.0050.00216.56
7.4.230.0000.00716.69
7.4.220.0130.00616.43
7.4.210.0120.00316.48
7.4.200.0050.00316.64
7.4.160.0100.00616.52
7.4.150.0060.01117.40
7.4.140.0090.00917.86
7.4.130.0120.00616.48
7.4.120.0060.01216.46
7.4.110.0060.01216.68
7.4.100.0180.00316.51
7.4.90.0030.01416.52
7.4.80.0120.00619.39
7.4.70.0100.00716.46
7.4.60.0070.01316.61
7.4.50.0040.00016.40
7.4.40.0110.00516.63
7.4.30.0100.01016.64
7.4.00.0060.00915.06
7.3.330.0000.00613.13
7.3.320.0050.00013.02
7.3.310.0000.00716.10
7.3.300.0060.00016.24
7.3.290.0050.01016.24
7.3.280.0040.01516.26
7.3.270.0080.00817.40
7.3.260.0130.00416.30
7.3.240.0060.01016.55
7.3.230.0160.00916.49
7.3.210.0160.00016.22
7.3.200.0030.01316.45
7.3.190.0120.00416.25
7.3.180.0040.01216.41
7.3.170.0130.00316.31
7.3.160.0110.00816.48
7.2.330.0080.00916.48
7.2.320.0060.01116.36
7.2.310.0000.02316.50
7.2.300.0080.00816.29
7.2.290.0120.00616.59
7.2.60.0030.01316.78
7.2.00.0060.00619.32
7.1.200.0060.00615.86
7.1.100.0140.00318.22
7.1.70.0040.00417.12
7.1.60.0160.01019.12
7.1.50.0080.00316.86
7.1.00.0000.08022.43
7.0.200.0070.00716.62
7.0.60.0070.04320.06
7.0.50.0130.06317.90
7.0.40.0030.04719.96
7.0.30.0230.05320.02
7.0.20.0270.06720.11
7.0.10.0130.05020.18
7.0.00.0000.09320.20
5.6.280.0100.06021.03
5.6.210.0100.04320.61
5.6.200.0100.03718.16
5.6.190.0070.09020.64
5.6.180.0170.05320.63
5.6.170.0170.05320.54
5.6.160.0030.08720.37
5.6.150.0070.04018.21
5.6.140.0130.07718.12
5.6.130.0100.05318.12
5.6.120.0100.07721.05
5.6.110.0170.08021.12
5.6.100.0070.07720.88
5.6.90.0100.06321.09
5.6.80.0200.06020.41
5.6.70.0300.01320.46
5.5.350.0300.08020.39
5.5.340.0030.04317.93
5.5.330.0100.06320.25
5.5.320.0300.05720.21
5.5.310.0270.03020.26
5.5.300.0030.04317.92
5.5.290.0100.03717.91
5.5.280.0070.03720.93
5.5.270.0030.04020.86
5.5.260.0070.09020.75
5.5.250.0070.08320.65
5.5.240.0300.06720.14
5.4.450.0700.07019.30
5.4.440.0500.06019.60
5.4.430.0570.08719.45
5.4.420.0570.08019.62
5.4.410.0600.07319.38
5.4.400.0530.05719.29
5.4.390.0730.05019.23
5.4.380.0700.05319.10
5.4.370.0730.06019.25
5.4.360.0730.06318.81
5.4.350.0670.05719.24
5.4.340.0430.07019.25
5.4.320.0630.08319.29
5.4.310.0630.05719.29
5.4.300.0700.06718.77
5.4.290.0630.05319.13
5.4.280.0730.04019.26
5.4.270.0600.06319.08
5.4.260.0570.06019.30
5.4.250.0630.06018.91
5.4.240.0670.05019.08
5.4.230.0700.05018.94
5.4.220.0670.07019.27
5.4.210.0700.04718.77
5.4.200.0830.05018.80
5.4.190.0570.05019.29
5.4.180.0800.06019.09
5.4.170.0530.06019.23
5.4.160.0570.06018.93
5.4.150.0630.05718.87
5.4.140.0400.06716.44
5.4.130.0430.05716.38
5.4.120.0600.06716.18
5.4.110.0500.06016.35
5.4.100.0630.05716.45
5.4.90.0530.06016.08
5.4.80.0730.03716.43
5.4.70.0200.04316.41
5.4.60.0370.06316.04
5.4.50.0100.06316.36
5.4.40.0000.05016.04
5.4.30.0100.06316.38
5.4.20.0030.07316.37

preferences:
44.39 ms | 401 KiB | 5 Q