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)
8.3.70.0140.00716.57
8.3.60.0100.01418.40
8.3.50.0190.01321.01
8.3.40.0080.00818.79
8.3.30.0110.00418.77
8.3.20.0040.00420.21
8.3.10.0040.00421.60
8.3.00.0000.01019.56
8.2.190.0070.01016.60
8.2.180.0150.00016.50
8.2.170.0070.01422.96
8.2.160.0070.01020.37
8.2.150.0090.00024.18
8.2.140.0050.00324.66
8.2.130.0070.00026.16
8.2.120.0000.00917.75
8.2.110.0000.00920.22
8.2.100.0110.00017.91
8.2.90.0090.00019.12
8.2.80.0080.00017.97
8.2.70.0040.00417.63
8.2.60.0040.00417.80
8.2.50.0080.00018.07
8.2.40.0030.00619.37
8.2.30.0100.00018.11
8.2.20.0040.00417.76
8.2.10.0000.00818.11
8.2.00.0040.00418.10
8.1.280.0140.00425.92
8.1.270.0040.00420.13
8.1.260.0060.00326.35
8.1.250.0070.00028.09
8.1.240.0100.01023.86
8.1.230.0110.00020.87
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0060.00317.35
8.1.190.0080.00017.38
8.1.180.0030.00518.10
8.1.170.0000.00818.59
8.1.160.0040.00421.93
8.1.150.0000.00718.88
8.1.140.0060.00317.45
8.1.130.0040.00417.69
8.1.120.0000.00717.34
8.1.110.0040.00417.30
8.1.100.0000.00717.34
8.1.90.0040.00417.36
8.1.80.0000.00817.39
8.1.70.0000.00717.49
8.1.60.0040.00417.52
8.1.50.0000.00817.42
8.1.40.0040.00417.39
8.1.30.0000.00817.63
8.1.20.0000.00817.62
8.1.10.0040.00417.50
8.1.00.0060.00317.48
8.0.300.0040.00418.77
8.0.290.0040.00416.63
8.0.280.0000.00718.35
8.0.270.0070.00017.25
8.0.260.0000.00617.18
8.0.250.0070.00017.05
8.0.240.0060.00316.88
8.0.230.0030.00516.98
8.0.220.0030.00316.84
8.0.210.0030.00316.98
8.0.200.0000.00716.89
8.0.190.0110.00016.98
8.0.180.0100.00016.89
8.0.170.0070.00017.02
8.0.160.0040.00316.91
8.0.150.0040.00416.88
8.0.140.0000.00816.90
8.0.130.0000.00613.45
8.0.120.0080.00016.90
8.0.110.0080.00016.91
8.0.100.0030.00516.98
8.0.90.0020.00516.89
8.0.80.0030.01216.93
8.0.70.0000.00716.82
8.0.60.0000.00716.91
8.0.50.0050.00317.00
8.0.30.0100.00717.16
8.0.20.0100.00817.40
8.0.10.0000.00716.92
8.0.00.0080.00916.81
7.4.330.0030.00515.08
7.4.320.0030.00316.64
7.4.300.0060.00016.60
7.4.290.0030.00716.64
7.4.280.0070.00016.52
7.4.270.0030.00316.55
7.4.260.0030.00316.38
7.4.250.0040.00416.45
7.4.240.0030.00416.54
7.4.230.0000.00716.66
7.4.220.0000.01916.71
7.4.210.0090.00616.61
7.4.200.0030.00316.29
7.4.160.0100.00616.52
7.4.150.0090.00917.40
7.4.140.0080.01317.86
7.4.130.0200.00316.47
7.4.120.0080.01016.50
7.4.110.0140.00316.62
7.4.100.0130.01016.34
7.4.90.0070.01116.64
7.4.80.0110.00519.39
7.4.70.0110.00616.58
7.4.60.0100.00716.64
7.4.50.0030.00616.57
7.4.40.0070.01016.32
7.4.30.0230.00016.53
7.4.00.0030.01315.12
7.3.330.0050.00013.16
7.3.320.0060.00013.13
7.3.310.0020.00516.11
7.3.300.0070.00016.16
7.3.290.0110.00416.29
7.3.280.0130.00716.28
7.3.270.0130.00417.40
7.3.260.0090.01516.46
7.3.240.0130.00416.36
7.3.230.0070.01016.39
7.3.210.0140.00316.45
7.3.200.0060.01116.31
7.3.190.0120.00616.39
7.3.180.0080.00816.36
7.3.170.0060.00916.39
7.3.160.0090.01216.25
7.3.120.0030.01615.07
7.3.110.0070.01014.74
7.3.100.0040.01614.64
7.3.90.0130.00614.55
7.3.80.0060.00614.54
7.3.70.0080.00014.69
7.3.60.0040.01414.86
7.3.50.0100.00714.65
7.3.40.0080.00614.75
7.3.30.0030.01014.85
7.3.20.0120.00316.55
7.3.10.0090.00916.40
7.3.00.0140.00316.56
7.2.330.0100.01316.23
7.2.320.0100.00716.29
7.2.310.0130.00316.50
7.2.300.0090.00616.68
7.2.290.0080.00816.35
7.2.250.0070.01414.75
7.2.240.0080.01214.96
7.2.230.0090.00614.84
7.2.220.0060.00915.02
7.2.210.0070.01014.77
7.2.200.0100.00714.89
7.2.190.0140.00414.68
7.2.180.0060.00914.91
7.2.170.0080.00314.96
7.2.60.0060.00916.70
7.2.00.0070.00719.34
7.1.330.0070.00715.63
7.1.320.0000.01415.88
7.1.310.0000.00915.57
7.1.300.0030.01415.72
7.1.290.0030.01315.89
7.1.280.0040.01215.69
7.1.270.0060.00915.65
7.1.260.0030.01015.99
7.1.200.0080.00615.86
7.1.100.0060.00917.70
7.1.70.0000.00716.96
7.1.60.0110.01519.12
7.1.50.0030.01616.87
7.1.00.0000.08022.45
7.0.200.0030.00716.54
7.0.60.0100.04020.03
7.0.50.0030.08317.80
7.0.40.0130.07320.23
7.0.30.0570.07720.13
7.0.20.0270.05020.12
7.0.10.0000.08020.19
7.0.00.0070.04720.13
5.6.280.0030.07320.88
5.6.210.0100.07320.76
5.6.200.0030.04318.18
5.6.190.0070.05720.35
5.6.180.0170.04720.32
5.6.170.0300.06720.48
5.6.160.0100.07320.70
5.6.150.0030.06018.08
5.6.140.0030.08718.21
5.6.130.0070.07718.09
5.6.120.0070.08321.01
5.6.110.0100.07720.97
5.6.100.0130.08320.88
5.6.90.0100.07721.12
5.6.80.0070.07720.34
5.6.70.0170.03720.49
5.5.350.0200.03020.34
5.5.340.0130.04317.98
5.5.330.0070.04320.15
5.5.320.0400.07020.28
5.5.310.0170.04320.28
5.5.300.0070.08017.96
5.5.290.0030.05717.93
5.5.280.0070.05720.84
5.5.270.0000.04320.77
5.5.260.0130.05720.77
5.5.250.0100.08020.61
5.5.240.0300.05020.25
5.4.450.0170.08319.21
5.4.440.0330.06719.25
5.4.430.0300.05019.41
5.4.420.0300.06019.38
5.4.410.0270.03719.28
5.4.400.0230.04319.25
5.4.390.0300.07019.06
5.4.380.0200.07319.08
5.4.370.0300.07018.81
5.4.360.0230.04719.09
5.4.350.0200.06718.80
5.4.340.0230.06018.81
5.4.320.0270.05319.09
5.4.310.0270.06719.26
5.4.300.0070.06318.79
5.4.290.0200.07718.79
5.4.280.0230.07719.24
5.4.270.0200.07318.91
5.4.260.0200.04719.24
5.4.250.0230.03319.07
5.4.240.0370.06319.10
5.4.230.0230.07019.08
5.4.220.0300.05319.07
5.4.210.0170.05719.07
5.4.200.0230.07319.08
5.4.190.0300.06719.03
5.4.180.0330.04018.84
5.4.170.0230.05019.05
5.4.160.0230.04318.86
5.4.150.0170.08018.76
5.4.140.0330.06316.16
5.4.130.0270.06316.34
5.4.120.0200.06016.39
5.4.110.0170.06316.50
5.4.100.0230.06316.20
5.4.90.0200.04016.51
5.4.80.0200.05716.29

preferences:
46.08 ms | 401 KiB | 5 Q