3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('a' => 1, 'ab' => 2, 'na' => null, 'nb' => 3); $a = array('b' => 10, 'ab' => 20, 'na' => 30, 'nb' => null); var_dump(array_merge($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)
8.3.60.0090.00918.14
8.3.50.0110.00417.93
8.3.40.0170.00318.71
8.3.30.0100.00319.09
8.3.20.0040.00420.28
8.3.10.0080.00021.73
8.3.00.0070.00019.05
8.2.180.0100.00718.29
8.2.170.0100.00622.96
8.2.160.0120.00322.27
8.2.150.0030.00524.18
8.2.140.0030.00524.66
8.2.130.0070.00026.16
8.2.120.0040.00419.54
8.2.110.0060.00322.11
8.2.100.0090.00620.46
8.2.90.0040.00419.17
8.2.80.0000.00817.97
8.2.70.0050.00517.75
8.2.60.0040.00417.91
8.2.50.0060.00318.07
8.2.40.0080.00018.09
8.2.30.0000.00717.98
8.2.20.0040.00417.68
8.2.10.0070.00018.09
8.2.00.0040.00417.62
8.1.270.0060.00318.93
8.1.260.0100.00026.35
8.1.250.0050.00228.09
8.1.240.0030.00623.82
8.1.230.0070.00318.98
8.1.220.0050.00317.76
8.1.210.0040.00418.77
8.1.200.0060.00317.36
8.1.190.0050.00317.13
8.1.180.0090.00018.10
8.1.170.0000.00818.65
8.1.160.0040.00421.85
8.1.150.0040.00418.81
8.1.140.0040.00419.08
8.1.130.0000.00717.72
8.1.120.0000.00717.38
8.1.110.0040.00417.29
8.1.100.0000.00717.29
8.1.90.0080.00017.34
8.1.80.0070.00017.38
8.1.70.0050.00217.28
8.1.60.0040.00417.50
8.1.50.0030.00617.55
8.1.40.0030.00617.39
8.1.30.0080.00017.64
8.1.20.0030.00517.50
8.1.10.0040.00417.49
8.1.00.0020.00517.50
8.0.300.0070.00018.77
8.0.290.0040.00416.63
8.0.280.0070.00018.36
8.0.270.0000.00717.19
8.0.260.0000.00617.10
8.0.250.0070.00016.88
8.0.240.0030.00316.84
8.0.230.0060.00316.98
8.0.220.0070.00016.86
8.0.210.0050.00216.79
8.0.200.0090.00016.80
8.0.190.0060.00316.78
8.0.180.0020.00516.92
8.0.170.0040.00416.86
8.0.160.0090.00016.76
8.0.150.0000.00716.84
8.0.140.0050.00316.91
8.0.130.0000.00613.26
8.0.120.0000.00816.88
8.0.110.0070.00016.93
8.0.100.0050.00316.95
8.0.90.0000.00716.84
8.0.80.0160.00616.85
8.0.70.0000.00716.84
8.0.60.0000.00716.88
8.0.50.0000.00716.70
8.0.30.0050.00817.25
8.0.20.0130.00717.40
8.0.10.0050.00216.89
8.0.00.0080.01016.66
7.4.330.0000.00515.03
7.4.320.0000.00616.42
7.4.300.0000.00716.55
7.4.290.0030.00316.35
7.4.280.0030.00616.50
7.4.270.0000.00716.53
7.4.260.0000.00816.31
7.4.250.0070.00016.49
7.4.240.0040.00316.49
7.4.230.0000.00716.43
7.4.220.0150.00316.54
7.4.210.0100.00716.50
7.4.200.0040.00416.63
7.4.160.0060.01016.46
7.4.150.0100.00817.40
7.4.140.0130.00517.86
7.4.130.0120.00716.39
7.4.120.0060.01516.38
7.4.110.0100.01416.33
7.4.100.0110.00716.30
7.4.90.0100.01016.56
7.4.80.0110.00819.39
7.4.70.0080.01516.20
7.4.60.0110.00516.31
7.4.50.0030.00616.45
7.4.40.0000.02016.49
7.4.30.0000.01616.74
7.4.00.0070.00715.06
7.3.330.0060.00013.10
7.3.320.0000.00513.04
7.3.310.0030.00316.29
7.3.300.0000.00616.23
7.3.290.0090.00416.24
7.3.280.0060.01016.21
7.3.270.0100.00817.40
7.3.260.0030.01316.59
7.3.250.0100.00816.23
7.3.240.0030.01316.46
7.3.230.0150.00816.39
7.3.210.0160.00616.29
7.3.200.0130.01019.39
7.3.190.0070.01416.25
7.3.180.0120.00416.30
7.3.170.0100.01316.27
7.3.160.0040.01716.25
7.3.120.0030.01314.96
7.3.110.0040.01214.94
7.3.100.0030.00914.62
7.3.90.0070.01014.61
7.3.80.0060.00914.71
7.3.70.0030.01314.46
7.3.60.0040.01214.69
7.3.50.0060.00614.86
7.3.40.0030.00914.68
7.3.30.0100.00714.75
7.3.20.0030.00916.58
7.3.10.0020.00916.52
7.3.00.0070.00716.59
7.2.330.0160.00716.44
7.2.320.0030.01616.44
7.2.310.0070.01016.41
7.2.300.0090.01216.31
7.2.290.0030.01516.52
7.2.240.0070.01014.84
7.2.230.0090.00614.74
7.2.220.0080.00314.97
7.2.210.0130.00314.97
7.2.200.0030.01214.52
7.2.190.0080.00814.96
7.2.180.0130.00314.93
7.2.170.0040.01414.93
7.2.160.0030.01215.02
7.2.150.0110.00316.85
7.2.140.0030.01316.77
7.2.130.0010.01216.47
7.2.120.0100.00316.66
7.2.110.0070.00516.65
7.2.100.0090.00516.61
7.2.90.0040.01016.49
7.2.80.0060.00916.73
7.2.70.0090.00516.75
7.2.60.0030.00716.62
7.2.50.0030.01016.66
7.2.40.0040.01016.79
7.2.30.0060.00416.72
7.2.20.0060.00916.77
7.2.10.0080.00816.58
7.2.00.0030.01017.61
7.1.330.0030.00915.63
7.1.320.0110.00615.68
7.1.310.0100.00315.80
7.1.300.0040.01115.63
7.1.290.0100.00615.51
7.1.280.0030.00715.68
7.1.270.0080.00815.65
7.1.260.0080.00615.63
7.1.250.0030.01215.69
7.1.100.0080.00418.04
7.1.70.0020.00516.97
7.1.60.0100.01419.46
7.1.50.0100.01016.85
7.1.00.0130.06322.55
7.0.200.0030.00616.66
7.0.140.0130.04322.08
7.0.60.0030.08720.06
7.0.50.0100.07317.88
7.0.40.0030.09019.96
7.0.30.0370.06720.13
7.0.20.0300.06320.01
7.0.10.0200.08320.01
7.0.00.0030.08720.33
5.6.280.0070.07021.02
5.6.210.0030.07020.51
5.6.200.0030.09018.21
5.6.190.0100.04020.36
5.6.180.0330.07720.29
5.6.170.0270.08320.52
5.6.160.0130.08020.71
5.6.150.0170.06018.16
5.6.140.0100.07718.21
5.6.130.0070.04018.13
5.6.120.0230.06321.15
5.6.110.0030.04021.07
5.6.100.0070.04020.95
5.6.90.0030.06021.00
5.6.80.0030.05720.38
5.6.70.4370.03720.40
5.5.350.0030.05320.35
5.5.340.0070.04318.02
5.5.330.0070.03720.07
5.5.320.3500.04320.13
5.5.310.0200.06320.30
5.5.300.0000.04317.96
5.5.290.0070.08017.88
5.5.280.0030.08720.88
5.5.270.0030.04320.72
5.5.260.0070.08020.75
5.5.250.0070.07320.54
5.5.240.0300.06720.28
5.4.450.0130.06019.43
5.4.440.0600.06319.45
5.4.430.0230.04019.31
5.4.420.0100.05319.49
5.4.410.0070.05719.34
5.4.400.0170.04719.03
5.4.390.0170.05318.49
5.4.380.0070.07018.67
5.4.370.0100.05718.57
5.4.360.0200.05318.63
5.4.350.0100.06018.71
5.4.340.0100.06018.68
5.4.320.0230.05318.63
5.4.310.0200.05718.57
5.4.300.0170.05718.49
5.4.290.0200.05718.68
5.4.280.0230.04718.71
5.4.270.0170.05318.55
5.4.260.0330.04318.56
5.4.250.0100.07318.54
5.4.240.0170.06018.71
5.4.230.0270.04318.56
5.4.220.0100.05718.47
5.4.210.0130.06018.63
5.4.200.0200.04716.52
5.4.190.0230.04718.72
5.4.180.0200.05318.53
5.4.170.0130.06318.47
5.4.160.0230.04718.55
5.4.150.0100.05718.72
5.4.140.0170.05016.19
5.4.130.0130.04716.23
5.4.120.0300.03716.15
5.4.110.0270.03716.16
5.4.100.0170.05316.29
5.4.90.0230.04316.04
5.4.80.0170.04716.02
5.4.70.0100.05716.01
5.4.60.0130.05716.02
5.4.50.0200.05016.02
5.4.40.0130.05716.12
5.4.30.0200.05016.21
5.4.20.0170.05016.04
5.4.10.0200.04316.04
5.4.00.0200.04715.77
5.3.290.0030.07714.57
5.3.280.0170.05014.59
5.3.270.0170.05314.70
5.3.260.0130.05714.63
5.3.250.0230.04314.63
5.3.240.0170.05714.53
5.3.230.0100.06314.49
5.3.220.0070.06014.65
5.3.210.0170.05314.63
5.3.200.0200.04714.57
5.3.190.0200.04714.49
5.3.180.0070.06714.62
5.3.170.0370.03314.47
5.3.160.0270.04314.65
5.3.150.0230.04314.52
5.3.140.0230.04314.52
5.3.130.0170.05314.64
5.3.120.0200.05714.44
5.3.110.0170.05014.64
5.3.100.0130.05714.00
5.3.90.0130.05014.00
5.3.80.0130.05313.93
5.3.70.0200.04713.96
5.3.60.0230.04313.99
5.3.50.0300.04713.97
5.3.40.0100.05713.92
5.3.30.0270.03713.82
5.3.20.0100.05313.78
5.3.10.0170.04713.59
5.3.00.0000.06313.61
5.2.170.0070.05011.11
5.2.160.0070.04711.07
5.2.150.0070.06311.07
5.2.140.0170.04011.10
5.2.130.0130.04311.03
5.2.120.0100.04311.16
5.2.110.0130.04011.23
5.2.100.0070.04311.06
5.2.90.0100.04311.14
5.2.80.0130.04311.24
5.2.70.0230.03311.05
5.2.60.0130.04311.02
5.2.50.0230.03010.96
5.2.40.0070.04711.03
5.2.30.0200.03711.03
5.2.20.0100.04311.07
5.2.10.0170.04010.85
5.2.00.0170.03710.85
5.1.60.0100.04010.13
5.1.50.0070.03710.05
5.1.40.0130.03010.01
5.1.30.0100.03710.31
5.1.20.0130.03310.37
5.1.10.0130.03310.16
5.1.00.0170.03310.20
5.0.50.0130.0238.61
5.0.40.0170.0238.52
5.0.30.0100.0408.25
5.0.20.0100.0238.27
5.0.10.0070.0278.18
5.0.00.0100.0408.19
4.4.90.0070.0207.33
4.4.80.0100.0177.33
4.4.70.0030.0237.33
4.4.60.0070.0207.33
4.4.50.0070.0207.33
4.4.40.0070.0337.33
4.4.30.0030.0237.33
4.4.20.0030.0237.33
4.4.10.0070.0237.33
4.4.00.0030.0377.33
4.3.110.0100.0177.33
4.3.100.0030.0237.33
4.3.90.0100.0207.33
4.3.80.0100.0307.33
4.3.70.0030.0237.33
4.3.60.0070.0207.33
4.3.50.0070.0207.33
4.3.40.0030.0377.33
4.3.30.0030.0277.33
4.3.20.0030.0237.33
4.3.10.0070.0207.33
4.3.00.0200.0239.02

preferences:
57.98 ms | 400 KiB | 5 Q