3v4l.org

run code in 300+ PHP versions simultaneously
<?php $first = [ 'abc' => [] ]; $alias = '30000'; var_dump(array_merge($first, [$alias => true]));

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)
8.3.60.0140.00716.75
8.3.50.0160.00322.12
8.3.40.0040.01118.53
8.3.30.0000.01418.95
8.3.20.0080.00020.16
8.3.10.0040.00421.77
8.3.00.0000.00819.13
8.2.180.0120.00618.16
8.2.170.0120.00322.96
8.2.160.0040.01120.23
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0080.00619.66
8.2.110.0030.00721.13
8.2.100.0070.00417.84
8.2.90.0040.00417.90
8.2.80.0060.00317.97
8.2.70.0030.00617.50
8.2.60.0030.00517.93
8.2.50.0040.00418.07
8.2.40.0060.00319.88
8.2.30.0040.00418.05
8.2.20.0050.00317.63
8.2.10.0050.00317.94
8.2.00.0040.00417.52
8.1.280.0140.00725.92
8.1.270.0040.00424.66
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0060.00322.52
8.1.230.0070.00320.97
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0060.00317.23
8.1.190.0080.00017.22
8.1.180.0040.00418.10
8.1.170.0040.00420.10
8.1.160.0080.00021.95
8.1.150.0070.00018.81
8.1.140.0000.00717.29
8.1.130.0030.00317.81
8.1.120.0070.00017.39
8.1.110.0080.00017.42
8.1.100.0040.00417.35
8.1.90.0000.00717.30
8.1.80.0000.00717.39
8.1.70.0030.00317.36
8.1.60.0030.00617.39
8.1.50.0050.00317.50
8.1.40.0040.00417.45
8.1.30.0030.00517.54
8.1.20.0040.00417.61
8.1.10.0060.00317.49
8.1.00.0000.00817.48
8.0.300.0060.00319.82
8.0.290.0040.00416.63
8.0.280.0040.00418.43
8.0.270.0070.00017.18
8.0.260.0000.00617.10
8.0.250.0060.00016.90
8.0.240.0030.00316.90
8.0.230.0000.00716.89
8.0.220.0040.00416.70
8.0.210.0000.00716.81
8.0.200.0060.00016.75
8.0.190.0000.00816.88
8.0.180.0000.00716.87
8.0.170.0070.00016.83
8.0.160.0000.00716.91
8.0.150.0080.00016.77
8.0.140.0040.00416.69
8.0.130.0000.00513.27
8.0.120.0040.00416.83
8.0.110.0040.00416.89
8.0.100.0070.00016.75
8.0.90.0030.00516.77
8.0.80.0070.00716.75
8.0.70.0030.00516.71
8.0.60.0000.00716.60
8.0.50.0030.00516.78
8.0.30.0100.01616.93
8.0.20.0040.01617.40
8.0.10.0000.00716.75
8.0.00.0100.00916.58
7.4.330.0000.00615.03
7.4.320.0030.00316.42
7.4.300.0070.00016.42
7.4.290.0040.00416.42
7.4.280.0040.00516.55
7.4.270.0030.00316.55
7.4.260.0040.00416.41
7.4.250.0040.00416.38
7.4.240.0030.00316.36
7.4.230.0000.00716.27
7.4.220.0110.00716.49
7.4.210.0070.00716.36
7.4.200.0000.00716.34
7.4.160.0040.01216.30
7.4.150.0120.01317.40
7.4.140.0100.00817.86
7.4.130.0080.00916.44
7.4.120.0130.00416.49
7.4.110.0160.00316.58
7.4.100.0080.01216.46
7.4.90.0090.00916.49
7.4.80.0070.01119.39
7.4.70.0100.00716.20
7.4.60.0090.00616.38
7.4.50.0000.00416.29
7.4.40.0110.00616.30
7.4.30.0100.01316.67
7.4.00.0070.01014.96
7.3.330.0060.00013.10
7.3.320.0070.00713.07
7.3.310.0000.00616.10
7.3.300.0000.00716.18
7.3.290.0060.00016.10
7.3.280.0080.00816.19
7.3.270.0030.01617.40
7.3.260.0100.00716.27
7.3.250.0090.00916.21
7.3.240.0100.00716.54
7.3.230.0130.00316.48
7.3.210.0060.01016.53
7.3.200.0190.00019.39
7.3.190.0120.00616.24
7.3.180.0100.00616.12
7.3.170.0070.01416.46
7.3.160.0070.01316.41
7.3.120.0030.01514.91
7.3.110.0000.01614.40
7.3.100.0070.01014.80
7.3.90.0150.00414.54
7.3.80.0130.00314.67
7.3.70.0030.01014.66
7.3.60.0070.00714.68
7.3.50.0100.00314.68
7.3.40.0070.00414.62
7.3.30.0030.00914.70
7.3.20.0060.00916.50
7.3.10.0060.00816.66
7.3.00.0050.00816.61
7.2.330.0120.00816.46
7.2.320.0100.00916.50
7.2.310.0140.00316.56
7.2.300.0110.00716.21
7.2.290.0090.00916.30
7.2.250.0060.01214.84
7.2.240.0130.00714.62
7.2.230.0000.01614.82
7.2.220.0070.01314.88
7.2.210.0030.01614.69
7.2.200.0070.01114.77
7.2.190.0130.00314.89
7.2.180.0120.00314.96
7.2.170.0040.01414.75
7.2.130.0020.01116.71
7.2.120.0090.00216.68
7.2.110.0030.00816.68
7.2.100.0060.00916.74
7.2.90.0020.01216.75
7.2.80.0030.00916.79
7.2.70.0040.00716.98
7.2.60.0050.00516.84
7.2.50.0070.00816.65
7.2.40.0070.01016.88
7.2.30.0060.01016.76
7.2.20.0040.00616.65
7.2.10.0030.01116.80
7.2.00.0060.00817.50
7.1.330.0040.00915.88
7.1.320.0000.01515.55
7.1.310.0090.00915.54
7.1.300.0060.00915.84
7.1.290.0030.00715.54
7.1.280.0030.00715.76
7.1.270.0030.01015.81
7.1.260.0120.00315.63
7.1.250.0020.01115.72
7.1.100.0000.01117.97
7.1.70.0080.00417.21
7.1.60.0090.01519.46
7.1.50.0090.00916.63
7.1.00.0070.06722.51
7.0.200.0000.00716.79
7.0.140.0030.07322.00
7.0.70.4130.04019.84
7.0.60.0070.08720.02
7.0.50.0100.07717.80
7.0.40.0030.04320.23
7.0.30.0230.05320.01
7.0.20.0270.06020.12
7.0.10.0300.06720.17
7.0.00.0070.08720.11
5.6.280.0030.07021.06
5.6.210.0100.07720.58
5.6.200.0100.08018.21
5.6.190.0070.09020.55
5.6.180.0230.06020.43
5.6.170.0170.05320.48
5.6.160.0070.08320.49
5.6.150.0070.05018.12
5.6.140.0170.07318.18
5.6.130.0030.04318.14
5.6.120.0100.06321.14
5.6.110.0130.06320.95
5.6.100.0030.04321.00
5.6.90.0170.08321.12
5.6.80.0100.08320.34
5.6.70.0270.07720.27
5.5.350.0070.08320.52
5.5.340.0070.04718.02
5.5.330.0100.07320.46
5.5.320.0070.04020.25
5.5.310.0430.06720.30
5.5.300.0100.07017.98
5.5.290.0130.08017.91
5.5.280.0070.03720.62
5.5.270.0070.06720.86
5.5.260.0070.04020.75
5.5.250.0100.07720.69
5.5.240.0030.07720.25
5.4.450.0070.06019.24
5.4.440.0770.05719.58
5.4.430.0270.05319.27
5.4.420.0800.05719.41
5.4.410.0930.05719.34
5.4.400.0100.08018.77
5.4.390.0170.07018.56
5.4.380.0130.05718.69
5.4.370.0130.06018.52
5.4.360.0230.04318.58
5.4.350.0000.06718.56
5.4.340.0230.04318.61
5.4.320.0100.06018.70
5.4.310.0070.06318.68
5.4.300.0070.05718.48
5.4.290.0170.04718.74
5.4.280.0100.05318.68
5.4.270.0070.05718.58
5.4.260.0100.05718.74
5.4.250.0170.05018.58
5.4.240.0100.06018.77
5.4.230.0130.05018.57
5.4.220.0100.05718.51
5.4.210.0230.04018.48
5.4.200.0130.05016.40
5.4.190.0100.05718.63
5.4.180.0270.04018.60
5.4.170.0030.07718.77
5.4.160.0070.05718.54
5.4.150.0130.05318.70
5.4.140.0170.04716.17
5.4.130.0130.04716.19
5.4.120.0100.05016.16
5.4.110.0100.05316.14
5.4.100.0100.05716.05
5.4.90.0100.05316.13
5.4.80.0030.05716.29
5.4.70.0270.04716.23
5.4.60.0100.05316.23
5.4.50.0130.04716.23
5.4.40.0100.05316.23
5.4.30.0100.05316.16
5.4.20.0130.05016.01
5.4.10.0100.05016.11
5.4.00.0100.05015.61
5.3.290.0070.06014.66
5.3.280.0070.05714.52
5.3.270.0100.06714.59
5.3.260.0130.05314.64
5.3.250.0030.08314.52
5.3.240.0400.05714.51
5.3.230.0230.04714.53
5.3.220.0130.05314.67
5.3.210.0200.04714.46
5.3.200.0130.05314.49
5.3.190.0100.05714.56
5.3.180.0230.04314.47
5.3.170.0230.05014.46
5.3.160.0100.05314.62
5.3.150.0070.05714.64
5.3.140.0170.04714.49
5.3.130.0070.06714.64
5.3.120.0200.06014.50
5.3.110.0200.05314.45
5.3.100.0270.05014.02
5.3.90.0130.07313.94
5.3.80.0170.05014.05
5.3.70.0230.06314.11
5.3.60.0100.07314.04
5.3.50.0300.04013.88
5.3.40.0100.05713.90
5.3.30.0130.05014.00
5.3.20.0170.04713.62
5.3.10.0270.05313.75
5.3.00.0130.05013.73
5.2.170.0070.04711.15
5.2.160.0130.05311.07
5.2.150.0170.04011.18
5.2.140.0170.04011.05
5.2.130.0130.04011.09
5.2.120.0130.04011.25
5.2.110.0070.05011.25
5.2.100.0030.05011.24
5.2.90.0070.04311.03
5.2.80.0100.04011.02
5.2.70.0070.04311.13
5.2.60.0130.04010.96
5.2.50.0070.05711.05
5.2.40.0170.04710.91
5.2.30.0200.04711.01
5.2.20.0130.05011.01
5.2.10.0270.03710.87
5.2.00.0070.06010.76
5.1.60.0100.03310.03
5.1.50.0170.03010.03
5.1.40.0100.0339.95
5.1.30.0030.04310.48
5.1.20.0130.03310.37
5.1.10.0030.04010.12
5.1.00.0070.04010.18
5.0.50.0030.0338.57
5.0.40.0030.0338.42
5.0.30.0070.0508.32
5.0.20.0070.0278.39
5.0.10.0000.0338.35
5.0.00.0070.0408.17
4.4.90.0030.0235.91
4.4.80.0030.0205.89
4.4.70.0070.0205.88
4.4.60.0000.0235.89
4.4.50.0000.0275.93
4.4.40.0030.0375.89
4.4.30.0070.0205.87
4.4.20.0070.0205.94
4.4.10.0030.0235.96
4.4.00.0100.0305.90
4.3.110.0070.0205.80
4.3.100.0070.0205.82
4.3.90.0000.0235.82
4.3.80.0030.0335.82
4.3.70.0030.0235.79
4.3.60.0030.0205.80
4.3.50.0100.0205.88
4.3.40.0030.0335.73
4.3.30.0030.0274.66
4.3.20.0030.0204.57
4.3.10.0030.0204.50
4.3.00.0130.0206.95

preferences:
49.3 ms | 401 KiB | 5 Q