3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(1,2,3); $b = array(1,array(2),3); $f = array(array(2),3,4); $c = array(array_merge($a, $b, $f)); var_dump($c); $d = array_unique($c); var_dump($d);

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)
8.3.70.0060.00916.58
8.3.60.0060.00916.38
8.3.50.0140.00421.92
8.3.40.0110.00418.71
8.3.30.0030.01019.04
8.3.20.0070.00020.16
8.3.10.0040.00420.42
8.3.00.0030.00519.38
8.2.180.0110.00316.61
8.2.170.0100.00322.96
8.2.160.0070.00720.38
8.2.150.0000.00824.18
8.2.140.0000.00824.66
8.2.130.0050.00226.16
8.2.120.0050.00321.04
8.2.110.0060.00320.44
8.2.100.0030.00917.78
8.2.90.0070.00319.22
8.2.80.0030.00517.97
8.2.70.0000.00917.75
8.2.60.0030.00617.80
8.2.50.0080.00018.07
8.2.40.0090.00018.09
8.2.30.0030.00619.42
8.2.20.0000.00817.66
8.2.10.0040.00418.11
8.2.00.0030.00617.77
8.1.280.0090.00925.92
8.1.270.0060.00323.71
8.1.260.0080.00026.35
8.1.250.0050.00328.09
8.1.240.0030.00722.25
8.1.230.0030.01020.90
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0060.00317.35
8.1.190.0050.00317.23
8.1.180.0070.00018.10
8.1.170.0060.00318.57
8.1.160.0040.00421.88
8.1.150.0000.00718.81
8.1.140.0000.00717.36
8.1.130.0040.00417.77
8.1.120.0040.00417.45
8.1.110.0030.00517.45
8.1.100.0040.00417.33
8.1.90.0080.00017.47
8.1.80.0070.00017.32
8.1.70.0030.00317.41
8.1.60.0050.00317.56
8.1.50.0030.00617.51
8.1.40.0060.00317.54
8.1.30.0000.00817.52
8.1.20.0030.00517.47
8.1.10.0090.00017.48
8.1.00.0000.00717.43
8.0.300.0050.00518.77
8.0.290.0040.00416.75
8.0.280.0000.00818.40
8.0.270.0000.00717.15
8.0.260.0000.00717.19
8.0.250.0030.00316.95
8.0.240.0000.00716.81
8.0.230.0000.00717.00
8.0.220.0030.00416.86
8.0.210.0040.00416.91
8.0.200.0000.00716.79
8.0.190.0040.00416.93
8.0.180.0070.00016.86
8.0.170.0030.00616.86
8.0.160.0040.00416.90
8.0.150.0000.00716.75
8.0.140.0040.00416.82
8.0.130.0040.00413.37
8.0.120.0080.00016.87
8.0.110.0040.00416.82
8.0.100.0040.00416.82
8.0.90.0040.00416.70
8.0.80.0030.01216.86
8.0.70.0000.00716.91
8.0.60.0040.00416.78
8.0.50.0080.00016.71
8.0.30.0100.01017.16
8.0.20.0130.00717.43
8.0.10.0050.00216.89
8.0.00.0130.00616.70
7.4.330.0050.00015.00
7.4.320.0060.00016.59
7.4.300.0020.00516.54
7.4.290.0070.00016.61
7.4.280.0070.00416.34
7.4.270.0000.00816.62
7.4.260.0060.00316.60
7.4.250.0070.00016.45
7.4.240.0030.00416.50
7.4.230.0070.00016.63
7.4.220.0130.00616.50
7.4.210.0070.00816.59
7.4.200.0040.00416.44
7.4.160.0110.00716.52
7.4.150.0090.01617.40
7.4.140.0160.00717.86
7.4.130.0070.01016.53
7.4.120.0140.00616.37
7.4.110.0090.00916.39
7.4.100.0160.00816.36
7.4.90.0160.00616.62
7.4.80.0140.00619.39
7.4.70.0120.00616.60
7.4.60.0160.00316.49
7.4.50.0030.00616.32
7.4.40.0130.00316.45
7.4.30.0150.00916.42
7.4.00.0060.00914.93
7.3.330.0030.00312.99
7.3.320.0020.00213.00
7.3.310.0060.00016.12
7.3.300.0030.00316.21
7.3.290.0120.00916.19
7.3.280.0100.00516.21
7.3.270.0110.00717.40
7.3.260.0090.00916.30
7.3.250.0150.00316.28
7.3.240.0080.01216.17
7.3.230.0170.00016.39
7.3.210.0030.01416.24
7.3.200.0030.01419.39
7.3.190.0030.01516.22
7.3.180.0070.01016.50
7.3.170.0120.00616.33
7.3.160.0060.01016.48
7.3.10.0060.00616.56
7.3.00.0050.01016.59
7.2.330.0100.01616.33
7.2.320.0130.00716.54
7.2.310.0070.01016.46
7.2.300.0040.01816.71
7.2.290.0090.00916.53
7.2.130.0060.00916.84
7.2.120.0020.00916.88
7.2.110.0040.01016.65
7.2.100.0060.00816.84
7.2.90.0100.00416.92
7.2.80.0050.01016.77
7.2.70.0050.00816.86
7.2.60.0050.00816.99
7.2.50.0060.00616.81
7.2.40.0080.00616.88
7.2.30.0020.00916.83
7.2.20.0050.00916.79
7.2.10.0050.01216.88
7.2.00.0060.00917.70
7.1.250.0070.00815.88
7.1.240.0060.00615.76
7.1.230.0070.00715.75
7.1.220.0070.00415.80
7.1.210.0100.00315.57
7.1.200.0020.01215.58
7.1.190.0070.00715.50
7.1.180.0030.00715.71
7.1.170.0060.00315.75
7.1.160.0060.00615.56
7.1.150.0080.00415.32
7.1.140.0120.00415.70
7.1.130.0060.00615.58
7.1.120.0030.01015.76
7.1.110.0080.00415.88
7.1.100.0040.00916.88
7.1.90.0100.00615.86
7.1.80.0040.00715.63
7.1.70.0070.00416.33
7.1.60.0110.00817.67
7.1.50.0060.01116.40
7.1.40.0030.01015.36
7.1.30.0040.01115.70
7.1.20.0060.00915.62
7.1.10.0040.00715.44
7.1.00.0030.04219.04
7.0.330.0000.01115.48
7.0.320.0090.00615.30
7.0.310.0030.00815.25
7.0.300.0000.01115.25
7.0.290.0000.01115.43
7.0.280.0040.01115.33
7.0.270.0070.00715.45
7.0.260.0040.00815.32
7.0.250.0030.00715.36
7.0.240.0040.01115.14
7.0.230.0030.00615.27
7.0.220.0040.01115.25
7.0.210.0040.00415.00
7.0.200.0020.00815.89
7.0.190.0070.00315.33
7.0.180.0000.01315.25
7.0.170.0060.00615.21
7.0.160.0070.00715.14
7.0.150.0000.01415.43
7.0.140.0030.04018.65
7.0.130.0060.00615.28
7.0.120.0040.01115.00
7.0.110.0030.00715.20
7.0.100.0100.00315.52
7.0.90.0030.01015.31
7.0.80.0110.00015.45
7.0.70.0040.00715.27
7.0.60.0070.04517.58
7.0.50.0030.02216.66
7.0.40.0080.04116.74
7.0.30.0270.03116.77
7.0.20.0190.04216.72
7.0.10.0030.04116.89
7.0.00.0050.04516.68
5.6.380.0000.01014.61
5.6.370.0060.00914.10
5.6.360.0030.00614.27
5.6.350.0060.00614.52
5.6.340.0070.00314.07
5.6.330.0070.00713.95
5.6.320.0060.00614.37
5.6.310.0030.00713.95
5.6.300.0030.01014.36
5.6.290.0060.00614.52
5.6.280.0070.03717.69
5.6.270.0060.00614.49
5.6.260.0060.00614.14
5.6.250.0030.00614.04
5.6.240.0040.01214.21
5.6.230.0000.00914.21
5.6.220.0090.00613.97
5.6.210.0060.02217.33
5.6.200.0070.02716.18
5.6.190.0060.03017.31
5.6.180.0060.04617.40
5.6.170.0250.03017.31
5.6.160.0020.04917.25
5.6.150.0110.04116.02
5.6.140.0050.04216.14
5.6.130.0110.03816.21
5.6.120.0050.03317.59
5.6.110.0060.04117.55
5.6.100.0100.04317.52
5.6.90.0050.04817.55
5.6.80.0070.02517.29
5.6.70.1970.02217.25
5.6.60.0060.00614.00
5.6.50.0090.00613.73
5.6.40.0040.01114.43
5.6.30.0090.00414.21
5.6.20.0030.00914.31
5.6.10.0030.00613.97
5.6.00.0090.00013.84
5.5.380.0030.00311.12
5.5.370.0070.00311.18
5.5.360.0000.00510.90
5.5.350.0120.03715.63
5.5.340.0100.04014.35
5.5.330.0080.02515.60
5.5.320.0200.03815.55
5.5.310.0130.02115.58
5.5.300.0070.03314.45
5.5.290.0070.02014.44
5.5.280.0030.03315.88
5.5.270.0050.04615.61
5.5.260.0080.03515.77
5.5.250.0100.03215.88
5.5.240.0150.04115.51
5.5.230.0040.00711.02
5.5.220.0030.00910.60
5.5.210.0080.00010.98
5.5.200.0030.00710.79
5.5.190.0000.00810.78
5.5.180.0000.00811.13
5.5.170.0080.00311.00
5.5.160.0000.00710.98
5.5.150.0080.00310.78
5.5.140.0090.00310.80
5.5.130.0060.00310.73
5.5.120.0000.01110.88
5.5.110.0030.00810.89
5.5.100.0090.00010.95
5.5.90.0030.00310.48
5.5.80.0060.00510.73
5.5.70.0030.00310.93
5.5.60.0030.00810.63
5.5.50.0030.00910.88
5.5.40.0030.00610.93
5.5.30.0070.00310.60
5.5.20.0080.00010.68
5.5.10.0050.00511.09
5.5.00.0000.01011.03
5.4.450.0340.02115.19
5.4.440.0300.02715.06
5.4.430.0340.03415.19
5.4.420.0120.02515.13
5.4.410.0320.03715.16
5.4.400.0110.03115.03
5.4.390.0450.03315.03
5.4.380.0180.02714.68
5.4.370.0170.02814.66
5.4.360.0080.03314.56
5.4.350.0270.03514.82
5.4.340.0090.03114.71
5.4.330.0000.00610.82
5.4.320.0030.02311.58
5.4.310.0100.02211.56
5.4.300.0080.01611.60
5.4.290.0060.02211.63
5.4.280.0040.02311.63
5.4.270.0050.02411.60
5.4.260.0050.02111.57
5.4.250.0040.02411.54
5.4.240.0020.02111.47
5.4.230.0070.02011.55
5.4.220.0090.02211.58
5.4.210.0070.02111.56
5.4.200.0070.02511.51
5.4.190.0060.02311.64
5.4.180.0060.02511.64
5.4.170.0100.01911.58
5.4.160.0050.02411.36
5.4.150.0070.02011.48
5.4.140.0080.02211.59
5.4.130.0070.02011.32
5.4.120.0020.02411.42
5.4.110.0070.01911.30
5.4.100.0040.02311.28
5.4.90.0020.02411.54
5.4.80.0060.02211.33
5.4.70.0070.01911.48
5.4.60.0030.02511.38
5.4.50.0060.02211.46
5.4.40.0080.02011.42
5.4.30.0080.01611.22
5.4.20.0060.02111.36
5.4.10.0050.02511.36
5.4.00.0040.02311.10
5.3.290.0060.02511.68
5.3.280.0080.02111.51
5.3.270.0050.02711.62
5.3.260.0040.02211.62
5.3.250.0050.02511.60
5.3.240.0040.02611.46
5.3.230.0080.02111.54
5.3.220.0040.02411.43
5.3.210.0060.02511.46
5.3.200.0040.02211.48
5.3.190.0060.02411.49
5.3.180.0030.02211.60
5.3.170.0040.02311.49
5.3.160.0070.02211.47
5.3.150.0070.02511.55
5.3.140.0060.02411.42
5.3.130.0080.02311.47
5.3.120.0050.02311.50
5.3.110.0070.02111.43
5.3.100.0040.02411.22
5.3.90.0090.01911.13
5.3.80.0080.01811.15
5.3.70.0080.02111.15
5.3.60.0030.02211.15
5.3.50.0030.02411.13
5.3.40.0060.02011.11
5.3.30.0090.01911.12
5.3.20.0030.02211.06
5.3.10.0040.02410.90
5.3.00.0060.02410.91
5.2.170.0040.0219.57
5.2.160.0080.0149.57
5.2.150.0060.0189.57
5.2.140.0060.0179.57
5.2.130.0050.0169.55
5.2.120.0070.0139.55
5.2.110.0050.0149.55
5.2.100.0040.0189.55
5.2.90.0060.0179.55
5.2.80.0060.0159.55
5.2.70.0040.0189.54
5.2.60.0040.0179.52
5.2.50.0060.0149.51
5.2.40.0050.0169.50
5.2.30.0040.0229.48
5.2.20.0050.0199.48
5.2.10.0050.0149.44
5.2.00.0020.0209.37
5.1.60.0050.0129.01
5.1.50.0050.0199.01
5.1.40.0020.0189.00
5.1.30.0050.0179.17
5.1.20.0020.0189.19
5.1.10.0020.0189.05
5.1.00.0040.0159.05
5.0.50.0040.0138.29
5.0.40.0020.0128.22
5.0.30.0040.0158.13
5.0.20.0030.0138.11
5.0.10.0040.0108.10
5.0.00.0050.0168.09
4.4.90.0010.0117.37
4.4.80.0010.0157.36
4.4.70.0040.0117.36
4.4.60.0020.0107.36
4.4.50.0040.0107.36
4.4.40.0020.0177.33
4.4.30.0020.0117.36
4.4.20.0020.0107.40
4.4.10.0040.0107.40
4.4.00.0040.0147.36
4.3.110.0020.0127.31
4.3.100.0040.0097.31
4.3.90.0010.0117.29
4.3.80.0020.0147.27
4.3.70.0020.0107.29
4.3.60.0020.0097.29
4.3.50.0040.0077.29
4.3.40.0040.0147.24
4.3.30.0010.0126.62
4.3.20.0020.0126.61
4.3.10.0020.0106.59
4.3.00.0000.01011.94

preferences:
62.84 ms | 401 KiB | 5 Q