3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('a' => 'A', 'b' => 'B', 'c' => 'C'); $b = array('a' => 'AA', 'd' => 'DD'); var_dump($a + $b); var_dump($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)
8.3.60.0150.00016.38
8.3.50.0080.01021.95
8.3.40.0090.00618.48
8.3.30.0070.00718.96
8.3.20.0040.00420.13
8.3.10.0040.00421.88
8.3.00.0070.00319.38
8.2.180.0120.00916.38
8.2.170.0070.00722.96
8.2.160.0040.01120.52
8.2.150.0000.00824.18
8.2.140.0090.00024.66
8.2.130.0000.00926.16
8.2.120.0080.00019.23
8.2.110.0090.00019.31
8.2.100.0060.00617.63
8.2.90.0040.00419.08
8.2.80.0040.00417.97
8.2.70.0080.00017.61
8.2.60.0040.00417.91
8.2.50.0000.00918.07
8.2.40.0040.00419.88
8.2.30.0040.00417.87
8.2.20.0080.00017.74
8.2.10.0060.00318.09
8.2.00.0000.00717.71
8.1.280.0140.01025.92
8.1.270.0090.00020.52
8.1.260.0070.00726.35
8.1.250.0070.00028.09
8.1.240.0000.00923.92
8.1.230.0080.00417.64
8.1.220.0050.00317.74
8.1.210.0030.00518.77
8.1.200.0070.00317.22
8.1.190.0080.00017.10
8.1.180.0040.00418.10
8.1.170.0000.00818.42
8.1.160.0040.00421.99
8.1.150.0000.00718.82
8.1.140.0040.00417.39
8.1.130.0070.00017.74
8.1.120.0040.00417.33
8.1.110.0080.00017.44
8.1.100.0030.00617.39
8.1.90.0070.00017.36
8.1.80.0030.00417.30
8.1.70.0000.00717.37
8.1.60.0060.00317.57
8.1.50.0040.00817.34
8.1.40.0040.00417.43
8.1.30.0080.00017.59
8.1.20.0000.00817.41
8.1.10.0040.00417.49
8.1.00.0000.00817.35
8.0.300.0040.00418.77
8.0.290.0000.00816.75
8.0.280.0070.00018.39
8.0.270.0000.00717.15
8.0.260.0030.00317.20
8.0.250.0030.00317.00
8.0.240.0000.00716.92
8.0.230.0030.00317.01
8.0.220.0030.00316.78
8.0.210.0050.00216.86
8.0.200.0030.00316.81
8.0.190.0040.00416.93
8.0.180.0040.00416.97
8.0.170.0070.00016.84
8.0.160.0030.00616.85
8.0.150.0030.00316.81
8.0.140.0070.00016.74
8.0.130.0070.00013.34
8.0.120.0030.00516.85
8.0.110.0040.00416.78
8.0.100.0000.00716.79
8.0.90.0000.00716.77
8.0.80.0030.01316.77
8.0.70.0030.00516.79
8.0.60.0040.00416.95
8.0.50.0000.00716.83
8.0.30.0130.01016.98
8.0.20.0150.01117.40
8.0.10.0070.00017.05
8.0.00.0120.00616.84
7.4.330.0000.00515.03
7.4.320.0030.00316.52
7.4.300.0000.00616.55
7.4.290.0070.00316.54
7.4.280.0000.00716.38
7.4.270.0080.00016.44
7.4.260.0050.00216.51
7.4.250.0000.00716.38
7.4.240.0030.00316.52
7.4.230.0000.00716.47
7.4.220.0150.00616.57
7.4.210.0020.01216.47
7.4.200.0030.00316.26
7.4.160.0120.00416.37
7.4.150.0100.00917.40
7.4.140.0130.00517.86
7.4.130.0080.00916.45
7.4.120.0100.00916.39
7.4.110.0060.01216.50
7.4.100.0140.01116.46
7.4.90.0080.00816.33
7.4.80.0070.01019.39
7.4.70.0080.00816.46
7.4.60.0060.01016.50
7.4.50.0000.00816.41
7.4.40.0130.00416.45
7.4.30.0120.00616.45
7.4.00.0070.01014.62
7.3.330.0060.00013.06
7.3.320.0100.00313.12
7.3.310.0000.00716.28
7.3.300.0030.00316.04
7.3.290.0030.00316.20
7.3.280.0100.00716.16
7.3.270.0190.00617.40
7.3.260.0130.01316.44
7.3.250.0050.01316.33
7.3.240.0110.00616.48
7.3.230.0030.01916.39
7.3.210.0090.00916.50
7.3.200.0080.01119.39
7.3.190.0030.01416.26
7.3.180.0070.01016.42
7.3.170.0100.01316.27
7.3.160.0070.01416.43
7.3.120.0000.01414.75
7.3.110.0060.00314.69
7.3.100.0060.01014.46
7.3.90.0070.00414.82
7.3.80.0120.00314.86
7.3.70.0060.00914.74
7.3.60.0060.00814.42
7.3.50.0030.01014.80
7.3.40.0100.00314.73
7.3.30.0000.01214.69
7.3.20.0070.00716.55
7.3.10.0000.00816.28
7.3.00.0120.00316.33
7.2.330.0180.00016.54
7.2.320.0140.00416.25
7.2.310.0000.02016.32
7.2.300.0130.00316.33
7.2.290.0170.00716.36
7.2.240.0030.01014.55
7.2.230.0070.01014.82
7.2.220.0030.01015.06
7.2.210.0000.01614.93
7.2.200.0000.01514.65
7.2.190.0100.00614.64
7.2.180.0100.00314.87
7.2.170.0070.00315.02
7.2.160.0030.00514.93
7.2.150.0100.00316.73
7.2.140.0000.01716.75
7.2.130.0060.01016.62
7.2.120.0120.00316.85
7.2.110.0000.01216.69
7.2.100.0070.00716.65
7.2.90.0050.00516.69
7.2.80.0100.00316.86
7.2.70.0090.00316.77
7.2.60.0060.00816.75
7.2.50.0060.00916.88
7.2.40.0060.00316.65
7.2.30.0120.00316.50
7.2.20.0040.01116.79
7.2.10.0080.00316.74
7.2.00.0070.00316.61
7.1.330.0080.00415.80
7.1.320.0070.01015.82
7.1.310.0060.00315.64
7.1.300.0110.00415.61
7.1.290.0040.01115.75
7.1.280.0120.00615.82
7.1.270.0030.00615.77
7.1.260.0060.00615.78
7.1.250.0070.00315.77
7.1.200.0070.00715.83
7.1.70.0000.01517.29
7.1.60.0070.01619.50
7.1.50.0030.01616.97
7.1.00.0070.05722.32
7.0.200.0160.00016.68
7.0.140.0000.03721.99
7.0.60.0070.06720.01
7.0.50.0030.06717.82
7.0.40.0030.04720.04
7.0.30.0500.04020.18
7.0.20.0200.05320.16
7.0.10.0430.07720.30
7.0.00.0130.08020.18
5.6.280.0000.07720.85
5.6.210.0130.08020.66
5.6.200.0170.08018.20
5.6.190.0100.03720.43
5.6.180.0370.05320.32
5.6.170.0270.06720.33
5.6.160.0030.04320.52
5.6.150.0070.03718.09
5.6.140.0030.04018.12
5.6.130.0100.08018.16
5.6.120.0100.04320.99
5.6.110.0030.04321.00
5.6.100.0100.07321.10
5.6.90.0100.08720.98
5.6.80.0070.06020.53
5.6.70.0200.03320.43
5.5.350.0200.06020.32
5.5.340.0100.07717.95
5.5.330.0070.04720.36
5.5.320.0030.04020.29
5.5.310.0400.07020.14
5.5.300.0100.06317.89
5.5.290.0000.04317.91
5.5.280.0030.05320.87
5.5.270.0170.07720.89
5.5.260.0100.07020.75
5.5.250.0030.08320.68
5.5.240.0000.05320.03
5.4.450.0600.05319.30
5.4.440.0870.06319.55
5.4.430.0530.06019.43
5.4.420.1000.07319.48
5.4.410.0770.05719.24
5.4.400.0530.06318.71
5.4.390.0330.06318.63
5.4.380.0300.06018.57
5.4.370.0430.04718.70
5.4.360.0370.06018.50
5.4.350.0330.05718.46
5.4.340.0370.06018.68
5.4.320.0300.06318.48
5.4.310.0400.08018.64
5.4.300.0400.07318.45
5.4.290.0370.05718.68
5.4.280.0300.06018.68
5.4.270.0330.04718.56
5.4.260.0370.04718.72
5.4.250.0370.05018.62
5.4.240.0330.05718.48
5.4.230.0430.05018.71
5.4.220.0270.05718.61
5.4.210.0130.07718.70
5.4.200.0400.05016.46
5.4.190.0400.06318.68
5.4.180.0270.05718.70
5.4.170.0300.06718.47
5.4.160.0270.05718.55
5.4.150.0300.06018.68
5.4.140.0330.05716.32
5.4.130.0370.04716.25
5.4.120.0300.06716.26
5.4.110.0330.05016.04
5.4.100.0470.05716.26
5.4.90.0330.05716.12
5.4.80.0470.04016.28
5.4.70.0330.05016.16
5.4.60.0400.04316.27
5.4.50.0270.05716.21
5.4.40.0430.04016.23
5.4.30.0230.06016.19
5.4.20.0330.05316.08
5.4.10.0270.05316.02
5.4.00.0330.04715.61
5.3.290.0300.08314.65
5.3.280.0300.07714.68
5.3.270.0270.08314.59
5.3.260.0330.06714.50
5.3.250.0370.05714.59
5.3.240.0430.05014.69
5.3.230.0270.06014.59
5.3.220.0230.06014.50
5.3.210.0330.05014.49
5.3.200.0270.05714.66
5.3.190.0270.05714.65
5.3.180.0300.05714.54
5.3.170.0370.05314.53
5.3.160.0500.05314.56
5.3.150.0270.06314.47
5.3.140.0300.05014.45
5.3.130.0370.08014.52
5.3.120.0330.05714.64
5.3.110.0270.06314.49
5.3.100.0300.06013.96
5.3.90.0330.06713.93
5.3.80.0270.06713.94
5.3.70.0370.05314.09
5.3.60.0370.05714.04
5.3.50.0300.05313.88
5.3.40.0300.06313.91
5.3.30.0370.05013.86
5.3.20.0370.04713.60
5.3.10.0370.04313.57
5.3.00.0400.05313.62
5.2.170.0200.04711.13
5.2.160.0230.04011.18
5.2.150.0200.04311.18
5.2.140.0200.04311.10
5.2.130.0300.03311.13
5.2.120.0230.04311.06
5.2.110.0170.05011.25
5.2.100.0230.04311.02
5.2.90.0270.05011.07
5.2.80.0270.04011.05
5.2.70.0270.03711.07
5.2.60.0230.04311.03
5.2.50.0200.04710.98
5.2.40.0200.04311.02
5.2.30.0230.03711.00
5.2.20.0170.04311.00
5.2.10.0230.03310.90
5.2.00.0200.04310.86
5.1.60.0170.0479.99
5.1.50.0270.04310.01
5.1.40.0270.04710.01
5.1.30.0200.03710.30
5.1.20.0230.03710.41
5.1.10.0230.04010.20
5.1.00.0200.04310.05
5.0.50.0200.0278.61
5.0.40.0170.0338.52
5.0.30.0170.0438.25
5.0.20.0100.0378.32
5.0.10.0170.0408.16
5.0.00.0100.0578.15
4.4.90.0130.0236.85
4.4.80.0100.0236.85
4.4.70.0070.0276.85
4.4.60.0130.0206.85
4.4.50.0200.0206.85
4.4.40.0130.0336.85
4.4.30.0100.0236.85
4.4.20.0070.0276.85
4.4.10.0070.0276.85
4.4.00.0100.0436.85
4.3.110.0130.0306.85
4.3.100.0230.0206.85
4.3.90.0100.0376.85
4.3.80.0270.0336.85
4.3.70.0130.0306.85
4.3.60.0130.0206.85
4.3.50.0070.0276.85
4.3.40.0130.0336.85
4.3.30.0070.0236.85
4.3.20.0070.0236.85
4.3.10.0130.0176.85
4.3.00.0130.0136.79

preferences:
38.06 ms | 401 KiB | 5 Q