3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(1 => "awdawda", 2 => "adwdawdaw"); $b = array(1 => "ssadssd", 2 => "ssasaddsasda"); $c = array_merge($a, $b); print_r($c, 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)
8.3.70.0120.00918.43
8.3.60.0100.01016.50
8.3.50.0110.01021.94
8.3.40.0070.01018.71
8.3.30.0070.00718.77
8.3.20.0000.00820.21
8.3.10.0080.00021.60
8.3.00.0060.00317.25
8.2.190.0100.00716.58
8.2.180.0070.01116.63
8.2.170.0070.01018.79
8.2.160.0180.00422.96
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0030.00526.16
8.2.120.0050.00319.23
8.2.110.0030.00619.09
8.2.100.0110.00017.50
8.2.90.0000.00719.09
8.2.80.0040.00417.97
8.2.70.0030.00617.50
8.2.60.0080.00019.64
8.2.50.0000.00818.07
8.2.40.0050.00319.88
8.2.30.0040.00417.86
8.2.20.0040.00417.54
8.2.10.0040.00418.05
8.2.00.0080.00317.69
8.1.280.0140.00025.92
8.1.270.0060.00320.09
8.1.260.0080.00026.35
8.1.250.0000.00828.09
8.1.240.0060.00323.84
8.1.230.0080.00317.66
8.1.220.0080.00017.74
8.1.210.0030.00518.77
8.1.200.0030.00617.23
8.1.190.0000.00917.10
8.1.180.0020.00518.10
8.1.170.0080.00020.13
8.1.160.0040.00421.86
8.1.150.0040.00418.74
8.1.140.0060.00317.37
8.1.130.0050.00317.81
8.1.120.0030.00317.30
8.1.110.0080.00017.27
8.1.100.0000.00817.38
8.1.90.0050.00317.31
8.1.80.0030.00317.28
8.1.70.0000.00717.28
8.1.60.0030.00617.54
8.1.50.0030.00517.35
8.1.40.0040.00417.52
8.1.30.0040.00417.55
8.1.20.0040.00417.56
8.1.10.0070.00017.48
8.1.00.0030.00517.38
8.0.300.0000.00718.77
8.0.290.0080.00016.58
8.0.280.0030.00318.35
8.0.270.0000.01017.18
8.0.260.0030.00317.11
8.0.250.0040.00416.79
8.0.240.0000.00616.84
8.0.230.0070.00016.88
8.0.220.0030.00316.71
8.0.210.0040.00416.85
8.0.200.0000.00616.74
8.0.190.0040.00416.88
8.0.180.0040.00416.75
8.0.170.0030.00516.69
8.0.160.0000.00716.71
8.0.150.0070.00016.85
8.0.140.0050.00316.73
8.0.130.0060.00013.20
8.0.120.0040.00416.82
8.0.110.0040.00416.76
8.0.100.0000.00816.64
8.0.90.0030.00516.79
8.0.80.0060.01016.76
8.0.70.0070.00016.73
8.0.60.0030.00516.86
8.0.50.0020.00516.72
8.0.30.0120.01016.97
8.0.20.0130.00617.40
8.0.10.0030.00416.82
8.0.00.0130.00516.60
7.4.330.0030.00315.03
7.4.320.0000.00616.48
7.4.300.0030.00316.51
7.4.290.0030.00316.43
7.4.280.0060.00316.37
7.4.270.0040.00416.49
7.4.260.0030.00316.41
7.4.250.0040.00416.49
7.4.240.0050.00216.45
7.4.230.0030.00316.18
7.4.220.0000.01616.46
7.4.210.0030.01416.55
7.4.200.0070.00016.48
7.4.160.0080.00816.34
7.4.150.0060.01217.40
7.4.140.0050.01617.86
7.4.130.0100.01216.36
7.4.120.0080.01016.42
7.4.110.0120.00616.57
7.4.100.0060.01116.54
7.4.90.0100.00716.31
7.4.80.0060.00919.39
7.4.70.0090.00916.32
7.4.60.0070.01116.51
7.4.50.0000.00416.51
7.4.40.0100.00616.18
7.4.30.0090.01216.48
7.4.00.0130.00314.63
7.3.330.0000.00613.04
7.3.320.0100.00613.04
7.3.310.0000.00715.98
7.3.300.0030.00316.04
7.3.290.0070.00916.13
7.3.280.0090.00716.08
7.3.270.0110.00617.40
7.3.260.0150.00716.18
7.3.250.0100.01116.29
7.3.240.0100.00716.30
7.3.230.0100.01316.39
7.3.210.0060.01016.37
7.3.200.0120.00619.39
7.3.190.0150.00616.10
7.3.180.0110.00516.09
7.3.170.0030.01616.45
7.3.160.0100.00616.48
7.3.00.0090.00316.74
7.2.330.0040.01216.54
7.2.320.0120.00616.66
7.2.310.0140.00316.61
7.2.300.0060.01016.51
7.2.290.0080.01116.62
7.2.130.0040.00816.87
7.2.120.0070.00716.73
7.2.110.0030.01016.83
7.2.100.0080.00416.88
7.2.90.0000.00817.01
7.2.80.0040.01116.79
7.2.70.0050.00516.74
7.2.60.0110.00416.52
7.2.50.0080.00416.94
7.2.40.0060.00816.54
7.2.30.0030.00616.86
7.2.20.0000.01116.75
7.2.10.0070.00716.64
7.2.00.0000.01117.95
7.1.250.0030.00915.60
7.1.240.0030.00715.62
7.1.230.0030.01015.53
7.1.220.0030.00715.80
7.1.210.0030.00615.71
7.1.200.0030.01015.92
7.1.190.0000.00815.54
7.1.180.0030.00615.63
7.1.170.0060.00915.79
7.1.160.0000.01415.79
7.1.150.0030.00915.88
7.1.140.0060.00615.75
7.1.130.0030.00715.63
7.1.120.0040.00715.79
7.1.110.0040.00715.78
7.1.100.0050.00616.81
7.1.90.0040.00715.79
7.1.80.0000.01015.35
7.1.70.0040.00516.29
7.1.60.0070.00817.60
7.1.50.0150.00825.36
7.1.40.0030.00715.64
7.1.30.0030.00715.43
7.1.20.0030.00915.64
7.1.10.0110.00015.57
7.1.00.0020.04519.01
7.0.330.0060.00615.39
7.0.320.0040.00715.07
7.0.310.0000.00915.20
7.0.300.0060.00615.05
7.0.290.0060.00315.26
7.0.280.0030.01015.30
7.0.270.0000.01015.28
7.0.260.0040.00815.27
7.0.250.0070.00715.20
7.0.240.0030.00715.22
7.0.230.0000.01015.23
7.0.220.0030.00715.25
7.0.210.0000.01015.28
7.0.200.0400.01114.96
7.0.190.0030.00715.25
7.0.180.0000.00815.20
7.0.170.0070.00315.49
7.0.160.0070.00315.43
7.0.150.0070.00315.54
7.0.140.0000.02818.46
7.0.130.0000.01615.24
7.0.120.0040.01115.30
7.0.110.0090.00215.07
7.0.100.0050.04717.57
7.0.90.0070.04217.54
7.0.80.0100.04517.50
7.0.70.0060.04617.58
7.0.60.0050.04417.53
7.0.50.0040.04617.75
7.0.40.0020.04616.78
7.0.30.0100.04516.64
7.0.20.0120.04316.75
7.0.10.0050.04716.51
7.0.00.0070.04016.73
5.6.380.0030.00714.39
5.6.370.0100.00314.33
5.6.360.0000.00814.36
5.6.350.0070.00714.39
5.6.340.0030.00914.25
5.6.330.0080.00314.17
5.6.320.0000.00914.20
5.6.310.0000.01413.91
5.6.300.0060.00913.98
5.6.290.0040.00713.88
5.6.280.0020.04117.54
5.6.270.0000.00914.05
5.6.260.0070.01013.87
5.6.250.0100.04417.45
5.6.240.0060.04817.47
5.6.230.0070.04617.46
5.6.220.0030.04317.35
5.6.210.0110.03617.32
5.6.200.0050.05017.53
5.6.190.0020.05217.64
5.6.180.0050.04517.59
5.6.170.0100.03817.52
5.6.160.0060.04617.57
5.6.150.0070.03917.54
5.6.140.0080.04117.51
5.6.130.0070.04317.62
5.6.120.0090.04217.54
5.6.110.0080.04217.64
5.6.100.0080.04317.50
5.6.90.0070.03617.63
5.6.80.0100.04217.24
5.6.70.0070.03617.24
5.6.60.0020.04517.20
5.6.50.0080.04217.18
5.6.40.0120.03717.11
5.6.30.0050.04417.23
5.6.20.0090.02917.34
5.6.10.0110.03817.32
5.6.00.0110.03817.23
5.5.380.0020.04915.72
5.5.370.0080.04215.72
5.5.360.0060.04515.85
5.5.350.0060.03715.81
5.5.340.0110.03916.02
5.5.330.0090.03215.95
5.5.320.0050.04915.89
5.5.310.0050.02715.96
5.5.300.0040.04315.97
5.5.290.0050.04516.00
5.5.280.0030.04315.92
5.5.270.0080.04016.05
5.5.260.0080.04215.88
5.5.250.0050.04315.86
5.5.240.0080.03615.75
5.5.230.0050.04615.67
5.5.220.0020.04215.64
5.5.210.0080.04315.63
5.5.200.0130.03315.62
5.5.190.0040.04015.59
5.5.180.0090.03515.59
5.5.170.0090.00311.01
5.5.160.0020.04715.59
5.5.150.0060.04215.68
5.5.140.0050.03315.54
5.5.130.0050.03315.58
5.5.120.0040.04115.67
5.5.110.0030.04315.65
5.5.100.0060.03415.55
5.5.90.0090.04215.60
5.5.80.0080.03815.54
5.5.70.0080.03515.64
5.5.60.0080.03815.55
5.5.50.0050.02515.63
5.5.40.0080.04215.57
5.5.30.0070.04015.57
5.5.20.0100.04015.53
5.5.10.0020.04515.52
5.5.00.0080.03615.48
5.4.450.0070.04015.22
5.4.440.0020.04715.14
5.4.430.0100.03815.30
5.4.420.0070.02815.19
5.4.410.0070.04015.12
5.4.400.0060.04315.07
5.4.390.0070.04215.08
5.4.380.0040.04014.93
5.4.370.0070.03715.08
5.4.360.0080.03715.02
5.4.350.0070.03515.02
5.4.340.0090.03714.98
5.4.330.0050.00511.06
5.4.320.0050.04215.12
5.4.310.0090.03615.06
5.4.300.0060.03515.09
5.4.290.0080.03714.91
5.4.280.0070.04214.95
5.4.270.0060.03615.06
5.4.260.0050.04015.08
5.4.250.0100.03515.13
5.4.240.0060.03715.08
5.4.230.0020.04315.11
5.4.220.0150.03515.07
5.4.210.0080.04014.95
5.4.200.0080.03715.08
5.4.190.0080.03815.06
5.4.180.0080.03615.22
5.4.170.0080.03315.13
5.4.160.0030.03115.06
5.4.150.0130.03315.01
5.4.140.0080.04013.73
5.4.130.0030.04313.71
5.4.120.0100.03213.71
5.4.110.0030.03813.68
5.4.100.0030.04013.74
5.4.90.0030.03713.65
5.4.80.0020.02513.73
5.4.70.0020.03513.66
5.4.60.0030.03813.71
5.4.50.0090.03513.68
5.4.40.0060.03813.73
5.4.30.0120.03313.68
5.4.20.0050.04013.70
5.4.10.0020.04013.67
5.4.00.0080.03213.44
5.3.290.0030.04612.80
5.3.280.0050.03812.81
5.3.270.0100.03512.81
5.3.260.0100.03212.82
5.3.250.0050.04112.78
5.3.240.0070.03312.79
5.3.230.0050.04112.87
5.3.220.0070.04212.80
5.3.210.0050.03812.81
5.3.200.0050.04212.75
5.3.190.0090.03712.79
5.3.180.0060.03812.76
5.3.170.0030.02412.77
5.3.160.0060.04012.80
5.3.150.0080.03512.75
5.3.140.0030.04312.75
5.3.130.0080.04012.77
5.3.120.0070.04212.82
5.3.110.0050.04412.74
5.3.100.0020.04212.58
5.3.90.0030.04012.57
5.3.80.0060.03712.51
5.3.70.0050.03212.47
5.3.60.0070.03712.54
5.3.50.0000.04212.53
5.3.40.0050.03912.44
5.3.30.0030.04312.46
5.3.20.0030.04012.29
5.3.10.0070.03912.29
5.3.00.0050.04112.38
5.2.170.0050.03311.57
5.2.160.0030.03311.57
5.2.150.0050.01811.57
5.2.140.0070.03411.57
5.2.130.0050.03411.57
5.2.120.0080.02511.57
5.2.110.0030.03511.57
5.2.100.0020.03211.57
5.2.90.0020.03311.57
5.2.80.0090.02811.57
5.2.70.0070.03111.57
5.2.60.0070.02811.57
5.2.50.0020.03211.57
5.2.40.0050.02811.57
5.2.30.0020.03511.57
5.2.20.0070.03011.57
5.2.10.0030.03211.57
5.2.00.0050.03011.57
5.1.60.0000.03111.57
5.1.50.0020.03111.57
5.1.40.0020.02911.57
5.1.30.0050.01911.57
5.1.20.0020.03111.57
5.1.10.0050.02511.57
5.1.00.0000.03411.57
5.0.50.0050.01711.57
5.0.40.0020.02411.57
5.0.30.0030.03211.57
5.0.20.0020.02711.57
5.0.10.0040.02111.57
5.0.00.0030.03211.57
4.4.90.0020.01811.57
4.4.80.0030.01111.57
4.4.70.0020.02111.57
4.4.60.0000.02111.57
4.4.50.0020.01911.57
4.4.40.0010.02511.57
4.4.30.0030.01711.57
4.4.20.0030.01711.57
4.4.10.0030.01811.57
4.4.00.0000.03111.57
4.3.110.0030.02011.57
4.3.100.0020.02011.57
4.3.90.0020.02111.57
4.3.80.0000.02611.57
4.3.70.0020.01711.57
4.3.60.0030.01711.57
4.3.50.0030.01511.57
4.3.40.0000.01911.57
4.3.30.0060.00711.57
4.3.20.0010.01811.57
4.3.10.0020.02011.57
4.3.00.0030.01811.57

preferences:
66.89 ms | 401 KiB | 5 Q