3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(0 => 'a', 1 => 'b', 2 => 'c'); $b = array(1 => 'G', 2 => 'L'); var_dump($b + $a); var_dump(array_merge($b, $a)); var_dump(array_merge($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)
8.3.60.0130.00318.18
8.3.50.0090.00621.08
8.3.40.0040.01118.84
8.3.30.0150.00018.88
8.3.20.0050.00220.22
8.3.10.0040.00422.07
8.3.00.0050.00320.54
8.2.180.0090.00616.37
8.2.170.0100.00522.96
8.2.160.0080.00619.07
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0050.00319.36
8.2.110.0130.00321.18
8.2.100.0110.00017.66
8.2.90.0030.00519.05
8.2.80.0030.00617.97
8.2.70.0080.00017.49
8.2.60.0030.00717.77
8.2.50.0050.00318.07
8.2.40.0030.00618.03
8.2.30.0040.00417.92
8.2.20.0040.00417.52
8.2.10.0030.00617.67
8.2.00.0080.00017.59
8.1.280.0190.00325.92
8.1.270.0000.00822.05
8.1.260.0040.00426.35
8.1.250.0000.00828.09
8.1.240.0030.00622.06
8.1.230.0080.00818.93
8.1.220.0030.00617.74
8.1.210.0040.00418.77
8.1.200.0030.00617.35
8.1.190.0000.00817.55
8.1.180.0030.00620.36
8.1.170.0070.00220.21
8.1.160.0050.00322.13
8.1.150.0050.00518.50
8.1.140.0030.00617.44
8.1.130.0070.00017.88
8.1.120.0000.00717.45
8.1.110.0040.00417.34
8.1.100.0030.00517.37
8.1.90.0040.00417.38
8.1.80.0040.00417.40
8.1.70.0000.00717.28
8.1.60.0000.00817.54
8.1.50.0080.00017.49
8.1.40.0030.00617.37
8.1.30.0040.00417.45
8.1.20.0090.00017.44
8.1.10.0070.00017.48
8.1.00.0000.00717.26
8.0.300.0060.00318.77
8.0.290.0000.00716.75
8.0.280.0030.00518.25
8.0.270.0000.00717.19
8.0.260.0030.00316.81
8.0.250.0070.00016.98
8.0.240.0040.00416.94
8.0.230.0030.00316.83
8.0.220.0020.00516.89
8.0.210.0070.00016.92
8.0.200.0000.00616.77
8.0.190.0070.00016.89
8.0.180.0040.00416.94
8.0.170.0030.00616.79
8.0.160.0000.00816.91
8.0.150.0030.00516.81
8.0.140.0000.00716.86
8.0.130.0060.00013.32
8.0.120.0030.00516.75
8.0.110.0000.00716.79
8.0.100.0040.00416.94
8.0.90.0000.00716.77
8.0.80.0140.00316.77
8.0.70.0040.00417.00
8.0.60.0040.00416.89
8.0.50.0000.00817.00
8.0.30.0090.01416.84
8.0.20.0100.01017.40
8.0.10.0000.00716.99
8.0.00.0180.00416.89
7.4.330.0000.00515.00
7.4.320.0030.00316.54
7.4.300.0000.00716.42
7.4.290.0030.00316.46
7.4.280.0000.00716.48
7.4.270.0040.00416.54
7.4.260.0030.00316.52
7.4.250.0040.00416.40
7.4.240.0040.00416.43
7.4.230.0060.00016.36
7.4.220.0100.00716.38
7.4.210.0100.00616.45
7.4.200.0070.00016.57
7.4.190.0080.00016.43
7.4.160.0030.01316.55
7.4.150.0070.01017.40
7.4.140.0110.00717.86
7.4.130.0130.00816.28
7.4.120.0100.00816.43
7.4.110.0190.00316.62
7.4.100.0150.00916.47
7.4.90.0100.00716.58
7.4.80.0100.00819.39
7.4.70.0190.00016.21
7.4.60.0100.00716.29
7.4.50.0040.00416.44
7.4.40.0040.01122.77
7.4.30.0070.01116.44
7.4.00.0080.00914.67
7.3.330.0030.00313.10
7.3.320.0000.00613.03
7.3.310.0000.00716.06
7.3.300.0040.00416.18
7.3.290.0090.00616.15
7.3.280.0100.00616.13
7.3.270.0090.00917.40
7.3.260.0090.01016.43
7.3.250.0130.00916.30
7.3.240.0130.00416.34
7.3.230.0030.01416.39
7.3.210.0140.00416.31
7.3.200.0060.00919.39
7.3.190.0130.00316.48
7.3.180.0060.01216.26
7.3.170.0060.00916.32
7.3.160.0170.00316.43
7.3.120.0030.01314.94
7.3.110.0060.00614.45
7.3.100.0070.00414.90
7.3.90.0080.00414.75
7.3.80.0060.00615.11
7.3.70.0110.00314.75
7.3.60.0070.01014.71
7.3.50.0060.00614.90
7.3.40.0030.00614.63
7.3.30.0140.00014.92
7.3.20.0090.00616.61
7.3.10.0030.00616.84
7.3.00.0100.00016.70
7.2.330.0110.00716.57
7.2.320.0070.01716.59
7.2.310.0120.01016.44
7.2.300.0040.01916.31
7.2.290.0030.01516.52
7.2.250.0060.01215.08
7.2.240.0030.01614.79
7.2.230.0080.00715.04
7.2.220.0030.01014.91
7.2.210.0090.00314.64
7.2.200.0100.00314.68
7.2.190.0090.00014.77
7.2.180.0110.00414.84
7.2.170.0000.01614.82
7.2.00.0090.00318.92
7.1.330.0060.00615.70
7.1.320.0040.00815.64
7.1.310.0060.00615.65
7.1.300.0060.00615.81
7.1.290.0090.00315.78
7.1.280.0070.00715.80
7.1.270.0060.00315.72
7.1.260.0060.00615.51
7.1.100.2840.00717.97
7.1.70.0030.00517.23
7.1.60.0030.01219.82
7.1.50.0030.01316.63
7.1.00.0130.06722.51
7.0.200.0000.00916.79
7.0.140.0030.07322.08
7.0.60.0200.06719.90
7.0.50.0070.06317.86
7.0.40.0170.04320.12
7.0.30.0270.08320.17
7.0.20.0270.04320.13
7.0.10.0100.07720.04
7.0.00.0130.07320.01
5.6.280.0030.07320.88
5.6.210.0030.08020.71
5.6.200.0100.05318.19
5.6.190.0070.08320.67
5.6.180.0400.07320.67
5.6.170.0270.06320.44
5.6.160.0030.06320.52
5.6.150.0070.07018.22
5.6.140.0100.07718.08
5.6.130.0070.03718.16
5.6.120.0170.02721.01
5.6.110.0070.09721.11
5.6.100.0100.08321.13
5.6.90.0130.06021.12
5.6.80.0030.08720.37
5.6.70.2800.03320.37
5.5.350.0070.03320.27
5.5.340.0100.06717.97
5.5.330.0070.08720.21
5.5.320.0230.05320.50
5.5.310.0230.08020.27
5.5.300.0130.06017.97
5.5.290.0000.04717.91
5.5.280.0070.06320.67
5.5.270.0030.06320.64
5.5.260.0030.09320.89
5.5.250.0070.08720.53
5.5.240.0030.08020.25
5.4.450.0770.05319.41
5.4.440.0770.05319.61
5.4.430.0730.05719.42
5.4.420.0730.05319.10
5.4.410.0630.05319.45
5.4.400.1130.05718.77
5.4.390.1030.05018.64
5.4.380.0300.05718.56
5.4.370.0170.06018.72
5.4.360.0300.04718.46
5.4.350.0270.05018.50
5.4.340.0400.04718.72
5.4.320.0070.03412.45
5.4.310.0070.04212.45
5.4.300.0040.04612.45
5.4.290.0060.03712.45
5.4.280.0060.04312.34
5.4.270.0030.03912.34
5.4.260.0200.04018.84
5.4.250.0100.05018.94
5.4.240.0070.08018.89
5.4.230.0130.04718.95
5.4.220.0030.07318.70
5.4.210.0130.05019.04
5.4.200.0100.07018.89
5.4.190.0100.07319.00
5.4.180.0070.07719.01
5.4.170.0170.05018.80
5.4.160.0270.03319.01
5.4.150.0130.06318.87
5.4.140.0130.07316.27
5.4.130.0100.05016.25
5.4.120.0070.06716.21
5.4.110.0130.06016.41
5.4.100.0030.07016.46
5.4.90.0070.04716.41
5.4.80.0100.06016.45
5.4.70.0070.05016.34
5.4.60.0130.06716.34
5.4.50.0100.05716.34
5.4.40.0070.06716.55
5.4.30.0170.04016.39
5.4.20.0030.07016.45
5.4.10.0070.06016.39
5.4.00.0100.06715.71
5.3.290.0090.04212.80
5.3.280.0070.06314.46
5.3.270.0070.07014.61
5.3.260.0100.06714.44
5.3.250.0070.05014.63
5.3.240.0030.05714.70
5.3.230.0030.07014.47
5.3.220.0170.04714.41
5.3.210.0100.06014.56
5.3.200.0030.07014.40
5.3.190.0070.07014.43
5.3.180.0200.05314.60
5.3.170.0130.06314.26
5.3.160.0100.06714.45
5.3.150.0130.04714.58
5.3.140.0130.04714.57
5.3.130.0130.05314.43
5.3.120.0070.07314.43
5.3.110.0000.08014.43
5.3.100.0000.05313.89
5.3.90.0030.06014.11
5.3.80.0030.05713.94
5.3.70.0030.05014.02
5.3.60.0030.05714.01
5.3.50.0100.04313.94
5.3.40.0030.05013.80
5.3.30.0000.05314.06
5.3.20.0100.06313.55
5.3.10.0000.05713.66
5.3.00.0000.05713.57
5.2.170.0030.04311.23
5.2.160.0070.05311.04
5.2.150.0030.05311.25
5.2.140.0000.04711.02
5.2.130.0000.04310.85
5.2.120.0170.04711.10
5.2.110.0070.04711.11
5.2.100.0000.04311.03
5.2.90.0030.04011.03
5.2.80.0000.06311.11
5.2.70.0030.04311.11
5.2.60.0170.04710.97
5.2.50.0000.06311.01
5.2.40.0070.04011.14
5.2.30.0030.05010.98
5.2.20.0030.04010.97
5.2.10.0170.03010.93
5.2.00.0070.05010.56
5.1.60.0070.04310.04
5.1.50.0070.0479.88
5.1.40.0130.03710.02
5.1.30.0030.04010.38
5.1.20.0000.04710.13
5.1.10.0030.0509.96
5.1.00.0000.06010.00
5.0.50.0070.0338.45
5.0.40.0030.0278.33
5.0.30.0000.0578.45
5.0.20.0000.0408.02
5.0.10.0100.0338.16
5.0.00.0070.0408.39
4.4.90.0070.0236.97
4.4.80.0030.0276.97
4.4.70.0030.0206.97
4.4.60.0100.0206.97
4.4.50.0000.0236.97
4.4.40.0030.0376.97
4.4.30.0000.0336.97
4.4.20.0000.0336.97
4.4.10.0030.0276.97
4.4.00.0030.0406.97
4.3.110.0030.0306.97
4.3.100.0030.0306.97
4.3.90.0000.0306.97
4.3.80.0000.0476.97
4.3.70.0070.0206.97
4.3.60.0000.0276.97
4.3.50.0000.0306.97
4.3.40.0030.0436.97
4.3.30.0000.0276.97
4.3.20.0070.0206.97
4.3.10.0030.0276.97
4.3.00.0100.0236.78

preferences:
44.3 ms | 401 KiB | 5 Q