3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a1 = array("a" => array("1")); $a2 = array("a" => array()); var_dump(array_merge($a1, $a2)); var_dump(array_merge($a2, $a1));

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)
8.3.60.0060.00916.61
8.3.50.0110.00721.94
8.3.40.0100.00618.54
8.3.30.0070.00718.92
8.3.20.0080.00020.33
8.3.10.0040.00421.90
8.3.00.0000.00819.13
8.2.180.0160.00018.41
8.2.170.0060.01222.96
8.2.160.0000.01720.34
8.2.150.0060.00324.18
8.2.140.0100.00024.66
8.2.130.0040.00426.16
8.2.120.0000.00819.54
8.2.110.0030.00622.31
8.2.100.0040.00817.63
8.2.90.0070.00019.23
8.2.80.0040.00417.97
8.2.70.0030.00517.25
8.2.60.0000.00717.93
8.2.50.0050.00318.07
8.2.40.0040.00418.09
8.2.30.0000.00718.10
8.2.20.0040.00417.61
8.2.10.0080.00018.07
8.2.00.0000.00717.56
8.1.280.0110.00725.92
8.1.270.0060.00320.63
8.1.260.0040.00426.35
8.1.250.0050.00328.09
8.1.240.0030.00618.94
8.1.230.0000.01217.68
8.1.220.0030.00617.74
8.1.210.0040.00418.77
8.1.200.0090.00017.23
8.1.190.0080.00017.23
8.1.180.0000.00818.10
8.1.170.0050.00318.54
8.1.160.0000.00821.95
8.1.150.0050.00218.74
8.1.140.0000.00717.39
8.1.130.0000.00717.81
8.1.120.0060.00317.39
8.1.110.0000.00717.32
8.1.100.0060.00317.28
8.1.90.0030.00317.46
8.1.80.0030.00317.41
8.1.70.0070.00017.36
8.1.60.0040.00417.40
8.1.50.0000.00817.39
8.1.40.0030.00517.46
8.1.30.0030.00517.42
8.1.20.0040.00417.52
8.1.10.0050.00317.38
8.1.00.0050.00317.42
8.0.300.0050.00318.77
8.0.290.0000.00716.75
8.0.280.0030.00318.28
8.0.270.0080.00017.24
8.0.260.0000.00617.17
8.0.250.0070.00016.73
8.0.240.0030.00316.76
8.0.230.0030.00316.87
8.0.220.0030.00316.78
8.0.210.0000.00716.71
8.0.200.0060.00316.90
8.0.190.0040.00416.82
8.0.180.0070.00016.80
8.0.170.0050.00316.86
8.0.160.0040.00416.96
8.0.150.0000.00816.62
8.0.140.0040.00416.82
8.0.130.0030.00313.13
8.0.120.0030.00516.74
8.0.110.0040.00416.72
8.0.100.0000.00716.73
8.0.90.0050.00316.70
8.0.80.0050.01116.79
8.0.70.0000.00816.62
8.0.60.0040.00416.82
8.0.50.0050.00316.64
8.0.30.0130.00817.13
8.0.20.0090.00917.40
8.0.10.0000.00716.77
8.0.00.0090.00916.67
7.4.330.0050.00015.03
7.4.320.0030.00316.43
7.4.300.0030.00316.58
7.4.290.0040.00416.43
7.4.280.0000.00816.50
7.4.270.0000.00716.53
7.4.260.0040.00416.31
7.4.250.0000.00716.39
7.4.240.0000.00816.46
7.4.230.0000.00716.63
7.4.220.0090.01316.30
7.4.210.0040.01116.35
7.4.200.0070.00016.33
7.4.160.0060.00916.39
7.4.150.0160.01017.40
7.4.140.0140.00317.86
7.4.130.0110.00916.43
7.4.120.0100.01216.33
7.4.110.0060.01716.51
7.4.100.0100.01316.37
7.4.90.0100.01016.21
7.4.80.0110.01119.39
7.4.70.0090.00916.35
7.4.60.0190.00316.42
7.4.50.0080.00016.27
7.4.40.0070.01516.34
7.4.30.0000.01716.31
7.4.00.0070.01014.88
7.3.330.0030.00212.99
7.3.320.0080.00913.02
7.3.310.0070.00016.18
7.3.300.0040.00416.09
7.3.290.0090.00516.17
7.3.280.0060.01016.11
7.3.270.0060.01317.40
7.3.260.0060.01116.02
7.3.250.0120.01016.31
7.3.240.0040.01316.30
7.3.230.0200.00316.39
7.3.210.0120.00416.34
7.3.200.0090.01219.39
7.3.190.0080.00816.18
7.3.180.0100.00716.14
7.3.170.0080.00816.39
7.3.160.0080.00816.09
7.3.10.0040.01116.34
7.3.00.0030.00916.38
7.2.330.0070.01016.53
7.2.320.0170.00016.32
7.2.310.0110.00516.37
7.2.300.0070.01016.61
7.2.290.0070.01416.53
7.2.130.0090.00516.50
7.2.120.0050.00916.55
7.2.110.0070.00816.42
7.2.100.0060.00916.44
7.2.90.0100.01016.70
7.2.80.0100.00616.29
7.2.70.0080.01116.51
7.2.60.0100.00616.58
7.2.50.0140.00316.51
7.2.40.0110.00416.66
7.2.30.0100.00316.42
7.2.20.0070.00616.47
7.2.10.0100.00416.41
7.2.00.0050.00817.28
7.1.250.0110.00415.56
7.1.240.0070.00715.46
7.1.230.0060.00615.25
7.1.220.0100.00715.36
7.1.210.0140.00415.54
7.1.200.0100.00315.36
7.1.190.0060.01015.46
7.1.180.0090.00315.50
7.1.170.0080.00815.84
7.1.160.0070.01115.39
7.1.150.0150.00315.59
7.1.140.0140.00715.79
7.1.130.0180.00015.52
7.1.120.0110.00715.68
7.1.110.0140.00315.39
7.1.100.0050.00916.74
7.1.90.0060.00915.54
7.1.80.0040.01115.18
7.1.70.0100.00316.31
7.1.60.0080.01217.41
7.1.50.0130.00715.86
7.1.40.0110.00715.57
7.1.30.0100.00715.36
7.1.20.0100.00315.56
7.1.10.0120.00315.23
7.1.00.0050.04418.67
7.0.330.0070.00714.88
7.0.320.0090.00414.96
7.0.310.0070.01015.17
7.0.300.0040.00715.26
7.0.290.0100.00715.21
7.0.280.0100.00715.02
7.0.270.0170.00014.83
7.0.260.0080.00515.04
7.0.250.0160.00315.22
7.0.240.0060.00914.78
7.0.230.0030.01315.09
7.0.220.0130.00314.62
7.0.210.0110.00714.78
7.0.200.0080.00515.67
7.0.190.0070.01115.17
7.0.180.0030.01514.87
7.0.170.0140.00014.95
7.0.160.0100.00715.21
7.0.150.0110.00414.81
7.0.140.0070.04018.39
7.0.130.0110.00414.90
7.0.120.0080.00414.93
7.0.110.0070.01114.72
7.0.100.0160.00315.04
7.0.90.0150.00014.81
7.0.80.0130.00314.77
7.0.70.0120.00614.79
7.0.60.0070.04517.56
7.0.50.0120.04016.46
7.0.40.0060.04616.64
7.0.30.0150.03316.81
7.0.20.0170.04316.57
7.0.10.0060.02716.49
7.0.00.0080.02116.36
5.6.380.0040.00814.03
5.6.370.0130.00414.32
5.6.360.0050.01514.13
5.6.350.0080.01314.54
5.6.340.0130.01114.52
5.6.330.0100.01314.37
5.6.320.0030.01014.13
5.6.310.0040.01214.22
5.6.300.0060.00913.56
5.6.290.0030.01014.17
5.6.280.0100.03617.58
5.6.270.0130.00414.01
5.6.260.0040.01514.07
5.6.250.0110.00313.64
5.6.240.0120.00613.73
5.6.230.0050.01013.92
5.6.220.0030.01014.14
5.6.210.0050.03417.14
5.6.200.0100.02115.79
5.6.190.0120.03817.12
5.6.180.0230.03817.31
5.6.170.0130.04517.13
5.6.160.0110.04117.13
5.6.150.0050.02916.08
5.6.140.0030.02715.99
5.6.130.0120.03515.99
5.6.120.0120.04417.53
5.6.110.0090.03717.36
5.6.100.0100.02117.45
5.6.90.0090.04517.49
5.6.80.0070.03217.26
5.6.70.2170.02217.23
5.6.60.0070.01013.88
5.6.50.0100.00713.68
5.6.40.0080.00713.69
5.6.30.0040.00813.74
5.6.20.0030.00713.88
5.6.10.0040.00714.01
5.6.00.0100.00713.55
5.5.380.0070.00311.00
5.5.370.0080.00311.00
5.5.360.0070.00711.00
5.5.350.0030.04715.71
5.5.340.0020.02114.51
5.5.330.0070.04215.70
5.5.320.0080.03915.59
5.5.310.0240.03515.61
5.5.300.0140.03514.48
5.5.290.0090.02514.48
5.5.280.0120.02515.82
5.5.270.0020.03615.92
5.5.260.0080.04315.94
5.5.250.0110.03215.84
5.5.240.0140.03715.59
5.5.230.0030.00911.00
5.5.220.0040.00811.00
5.5.210.0090.00311.00
5.5.200.0040.00411.00
5.5.190.0080.00311.00
5.5.180.0060.00611.00
5.5.170.0040.00711.00
5.5.160.0030.00811.00
5.5.150.0040.00811.00
5.5.140.0100.00011.00
5.5.130.0030.00911.00
5.5.120.0040.00711.01
5.5.110.0040.00411.00
5.5.100.0000.01011.00
5.5.90.0070.00711.00
5.5.80.0060.00611.00
5.5.70.0030.01011.01
5.5.60.0070.00311.00
5.5.50.0040.00711.00
5.5.40.0000.01011.00
5.5.30.0000.00611.00
5.5.20.0060.00611.00
5.5.10.0040.00411.00
5.5.00.0040.00811.00
5.4.450.0460.02715.28
5.4.440.0720.02715.05
5.4.430.0580.03015.25
5.4.420.0100.03315.25
5.4.410.0150.03015.10
5.4.400.0140.03314.83
5.4.390.0150.02814.82
5.4.380.0070.03514.82
5.4.370.0120.03014.82
5.4.360.0110.03114.86
5.4.350.0110.03314.82
5.4.340.0190.02214.84
5.4.330.0060.00311.00
5.4.320.0120.03014.73
5.4.310.0130.02814.87
5.4.300.0060.03314.81
5.4.290.0130.02514.86
5.4.280.0160.03814.85
5.4.270.0120.02814.85
5.4.260.0080.03314.82
5.4.250.0130.03514.85
5.4.240.0140.03114.80
5.4.230.0050.03314.79
5.4.220.0130.02814.74
5.4.210.0170.02314.77
5.4.200.0070.03113.75
5.4.190.0100.02814.74
5.4.180.0100.03014.81
5.4.170.0150.02714.70
5.4.160.0100.04214.74
5.4.150.0050.03614.84
5.4.140.0120.02813.59
5.4.130.0190.01813.65
5.4.120.0070.03213.53
5.4.110.0130.02513.60
5.4.100.0090.03113.56
5.4.90.0100.03013.61
5.4.80.0100.02813.51
5.4.70.0150.02313.53
5.4.60.0030.03513.55
5.4.50.0090.02813.60
5.4.40.0180.03413.58
5.4.30.0070.03213.62
5.4.20.0150.02513.56
5.4.10.0140.02713.56
5.4.00.0130.02813.30
5.3.290.0130.03212.80
5.3.280.0160.02612.84
5.3.270.0130.02812.79
5.3.260.0120.03012.76
5.3.250.0090.03112.83
5.3.240.0120.02812.79
5.3.230.0120.02712.77
5.3.220.0080.03412.77
5.3.210.0100.03112.74
5.3.200.0070.03612.73
5.3.190.0130.02812.75
5.3.180.0120.02612.74
5.3.170.0090.02812.77
5.3.160.0070.03012.80
5.3.150.0070.03412.78
5.3.140.0070.03212.77
5.3.130.0080.03112.76
5.3.120.0120.03212.81
5.3.110.0090.03112.76
5.3.100.0190.02012.51
5.3.90.0110.02612.53
5.3.80.0110.03112.49
5.3.70.0150.02612.55
5.3.60.0140.02412.47
5.3.50.0080.03212.46
5.3.40.0120.02712.42
5.3.30.0090.02912.45
5.3.20.0180.02912.38
5.3.10.0120.02712.38
5.3.00.0140.02712.32
5.2.170.0040.02711.13
5.2.160.0080.02311.09
5.2.150.0080.02311.14
5.2.140.0070.02711.06
5.2.130.0120.02211.12
5.2.120.0080.02511.01
5.2.110.0150.02011.05
5.2.100.0080.02511.07
5.2.90.0110.02311.02
5.2.80.0110.02311.01
5.2.70.0120.02511.04
5.2.60.0090.02411.01
5.2.50.0130.02510.98
5.2.40.0070.02411.04
5.2.30.0070.02511.05
5.2.20.0100.02010.96
5.2.10.0090.02110.92
5.2.00.0070.02510.85
5.1.60.0050.02110.53
5.1.50.0050.02110.53
5.1.40.0090.02010.47
5.1.30.0080.02010.73
5.1.20.0060.02110.68
5.1.10.0070.02110.52
5.1.00.0110.01610.52
5.0.50.0050.0169.79
5.0.40.0050.0169.77
5.0.30.0050.0239.64
5.0.20.0080.0139.66
5.0.10.0050.0159.62
5.0.00.0100.0289.64
4.4.90.0030.0148.47
4.4.80.0070.0108.43
4.4.70.0050.0138.43
4.4.60.0040.0148.46
4.4.50.0030.0138.46
4.4.40.0070.0178.43
4.4.30.0020.0158.46
4.4.20.0070.0108.44
4.4.10.0060.0138.47
4.4.00.0040.0188.46
4.3.110.0030.0148.41
4.3.100.0020.0168.39
4.3.90.0070.0118.40
4.3.80.0040.0198.44
4.3.70.0080.0128.42
4.3.60.0050.0138.44
4.3.50.0080.0088.40
4.3.40.0050.0188.40
4.3.30.0040.0137.78
4.3.20.0020.0157.83
4.3.10.0020.0167.76
4.3.00.0170.0109.14

preferences:
45.75 ms | 401 KiB | 5 Q