3v4l.org

run code in 300+ PHP versions simultaneously
<?php $keys = array(0, "", "0", 0.0, false, null, array()); foreach ($keys as $key) { $array = array($key => "foo"); var_dump($key); var_dump(key($array)); var_dump(isset($array[$key])); var_dump(array_key_exists($key, $array)); echo "\n"; }

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)
8.3.60.0100.00316.63
8.3.50.0160.00522.01
8.3.40.0090.00618.71
8.3.30.0100.00319.08
8.3.20.0030.00520.30
8.3.10.0040.00423.69
8.3.00.0070.00419.20
8.2.180.0090.00616.50
8.2.170.0110.00322.96
8.2.160.0030.01320.21
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0070.00322.05
8.2.110.0030.00721.98
8.2.100.0070.00417.73
8.2.90.0050.00319.09
8.2.80.0040.00417.97
8.2.70.0040.00417.75
8.2.60.0040.00417.79
8.2.50.0040.00418.07
8.2.40.0040.00419.86
8.2.30.0000.00718.12
8.2.20.0030.00617.81
8.2.10.0040.00417.99
8.2.00.0040.00417.68
8.1.280.0070.00725.92
8.1.270.0050.00323.80
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0070.01122.08
8.1.230.0000.01123.85
8.1.220.0000.00817.74
8.1.210.0000.00818.77
8.1.200.0000.00917.13
8.1.190.0080.00017.13
8.1.180.0000.00918.10
8.1.170.0040.00418.65
8.1.160.0000.00721.97
8.1.150.0040.00418.64
8.1.140.0030.00717.49
8.1.130.0030.00317.83
8.1.120.0070.00017.43
8.1.110.0070.00017.36
8.1.100.0040.00317.38
8.1.90.0060.00317.48
8.1.80.0040.00417.50
8.1.70.0030.00317.33
8.1.60.0000.00917.56
8.1.50.0030.00517.58
8.1.40.0040.00417.54
8.1.30.0080.00017.50
8.1.20.0080.00017.57
8.1.10.0000.00717.49
8.1.00.0000.00817.43
8.0.300.0050.00320.76
8.0.290.0030.00517.18
8.0.280.0000.00718.44
8.0.270.0070.00017.25
8.0.260.0030.00317.30
8.0.250.0000.00716.95
8.0.240.0050.00316.89
8.0.230.0070.00016.94
8.0.220.0070.00016.94
8.0.210.0000.00716.86
8.0.200.0000.00716.98
8.0.190.0040.00417.05
8.0.180.0080.00316.87
8.0.170.0040.00416.85
8.0.160.0000.00816.89
8.0.150.0070.00016.90
8.0.140.0040.00416.94
8.0.130.0030.00313.31
8.0.120.0080.00016.91
8.0.110.0040.00416.89
8.0.100.0000.00816.82
8.0.90.0000.00816.80
8.0.80.0150.00716.84
8.0.70.0070.00016.80
8.0.60.0020.00516.81
8.0.50.0040.00416.95
8.0.30.0140.00616.94
8.0.20.0110.01117.40
8.0.10.0050.00216.98
8.0.00.0120.00716.78
7.4.330.0060.00015.09
7.4.320.0070.00016.52
7.4.300.0000.00616.60
7.4.290.0040.00416.51
7.4.280.0000.00716.55
7.4.270.0040.00416.61
7.4.260.0050.00316.42
7.4.250.0000.00716.37
7.4.240.0030.00416.52
7.4.230.0040.00416.66
7.4.220.0100.00716.52
7.4.210.0070.01016.53
7.4.200.0000.00716.34
7.4.190.0000.00816.54
7.4.160.0130.00416.54
7.4.150.0140.00517.40
7.4.140.0090.00917.86
7.4.130.0070.01016.50
7.4.120.0070.00916.52
7.4.110.0070.01016.39
7.4.100.0060.01716.61
7.4.90.0150.00916.66
7.4.80.0060.01519.39
7.4.70.0080.00816.34
7.4.60.0210.00616.51
7.4.50.0000.00816.22
7.4.40.0070.01316.55
7.4.30.0070.01116.39
7.4.00.0000.01415.13
7.3.330.0000.00513.22
7.3.320.0050.00013.09
7.3.310.0030.00516.39
7.3.300.0060.00016.29
7.3.290.0110.00316.34
7.3.280.0090.00916.37
7.3.270.0140.00317.40
7.3.260.0100.01016.38
7.3.250.0110.00616.48
7.3.240.0140.00316.55
7.3.230.0100.00616.46
7.3.210.0170.00316.48
7.3.200.0110.01119.39
7.3.190.0100.01316.46
7.3.180.0130.00416.30
7.3.170.0110.00716.51
7.3.160.0130.00316.38
7.3.120.0000.01614.83
7.3.10.0070.00416.74
7.3.00.0070.00716.67
7.2.330.0110.01116.38
7.2.320.0110.01116.62
7.2.310.0130.00616.77
7.2.300.0120.00916.61
7.2.290.0110.00616.60
7.2.130.0070.00716.81
7.2.120.0030.00616.92
7.2.110.0130.00016.71
7.2.100.0030.00716.74
7.2.90.0090.00316.88
7.2.80.0100.00717.01
7.2.70.0100.00016.84
7.2.60.0020.01016.95
7.2.50.0070.00417.07
7.2.40.0040.00716.68
7.2.30.0100.00017.09
7.2.20.0060.00916.72
7.2.10.0110.00417.14
7.2.00.0000.01418.01
7.1.250.0000.01015.87
7.1.200.0140.00015.72
7.1.100.0000.01218.16
7.1.70.0040.01117.18
7.1.60.0140.01019.46
7.1.50.0150.00617.05
7.1.00.0100.07022.57
7.0.200.0040.00416.48
7.0.140.0000.08021.99
7.0.60.0070.07719.82
7.0.50.0000.04717.87
7.0.40.0130.06720.09
7.0.30.0330.07020.13
7.0.20.0230.04020.02
7.0.10.0330.08020.28
7.0.00.0130.08020.00
5.6.280.0100.06720.90
5.6.210.0030.08720.72
5.6.200.0070.08018.13
5.6.190.0130.08720.39
5.6.180.3300.03720.29
5.6.170.0370.06720.55
5.6.160.0070.04320.61
5.6.150.0100.03318.12
5.6.140.0100.08018.14
5.6.130.0070.06318.11
5.6.120.0000.05021.04
5.6.110.0030.05021.05
5.6.100.0130.07320.97
5.6.90.0100.06721.03
5.6.80.0200.07020.52
5.6.70.0300.06320.33
5.5.350.0130.06720.49
5.5.340.0070.04018.01
5.5.330.0000.09720.23
5.5.320.0500.07320.27
5.5.310.0230.08020.27
5.5.300.0200.06718.00
5.5.290.0070.03717.96
5.5.280.0030.04320.80
5.5.270.0000.09320.84
5.5.260.0000.06720.95
5.5.250.0070.07720.58
5.5.240.0100.03320.12
5.4.450.0170.05019.55
5.4.440.0430.05719.52
5.4.430.0130.06019.50
5.4.420.0630.00019.14
5.4.410.0200.06718.85
5.4.400.0170.05718.77
5.4.390.0130.06018.50
5.4.380.0300.05018.74
5.4.370.0070.03718.71
5.4.360.0030.04018.70
5.4.350.0020.04111.98
5.4.340.0040.03811.97
5.4.320.0050.03812.46
5.4.310.0070.04412.45
5.4.300.0090.03512.46
5.4.290.0060.04112.43
5.4.280.0070.03612.34
5.4.270.0050.03812.33
5.4.260.0080.04812.34
5.4.250.0100.05012.34
5.4.240.0060.03612.34
5.4.230.0030.04112.33
5.4.220.0070.05312.32
5.4.210.0050.05612.33
5.4.200.0050.04112.32
5.4.190.0080.03912.32
5.4.180.0140.06312.32
5.4.170.0100.04212.33
5.4.160.0090.03712.33
5.4.150.0090.04112.32
5.4.140.0050.04012.01
5.4.130.0050.03712.00
5.4.120.0020.04011.95
5.4.110.0090.03711.95
5.4.100.0080.03811.95
5.4.90.0110.03111.96
5.4.80.0060.03511.95
5.4.70.0040.03711.95
5.4.60.0050.03511.95
5.4.50.0080.04011.95
5.4.40.0080.04211.93
5.4.30.0100.04911.94
5.4.20.0040.04411.93
5.4.10.0040.03711.94
5.4.00.0040.03811.43
5.3.290.0090.04812.80
5.3.280.0040.04012.71
5.3.270.0050.06012.73
5.3.260.0110.04312.72
5.3.250.0080.04312.72
5.3.240.0040.04012.72
5.3.230.0030.04012.71
5.3.220.0030.03812.68
5.3.210.0040.04012.68
5.3.200.0070.04012.68
5.3.190.0040.04412.68
5.3.180.0090.04112.67
5.3.170.0090.07112.67
5.3.160.0080.05912.68
5.3.150.0050.04012.67
5.3.140.0060.05312.66
5.3.130.0070.06112.66
5.3.120.0100.07612.66
5.3.110.0130.06412.66
5.3.100.0110.04912.12
5.3.90.0090.04212.09
5.3.80.0050.04312.07
5.3.70.0090.04412.07
5.3.60.0100.04912.07
5.3.50.0140.04612.00
5.3.40.0070.06112.00
5.3.30.0090.05911.95
5.3.20.0100.05011.73
5.3.10.0050.05111.69
5.3.00.0120.06211.68
5.2.170.0040.0329.18
5.2.160.0040.0309.18
5.2.150.0040.0319.18
5.2.140.0060.0299.18
5.2.130.0050.0309.14
5.2.120.0040.0299.14
5.2.110.0110.0359.14
5.2.100.0070.0309.14
5.2.90.0080.0359.14
5.2.80.0070.0319.14
5.2.70.0040.0339.14
5.2.60.0070.0349.09
5.2.50.0050.0339.06
5.2.40.0070.0299.04
5.2.30.0060.0439.01
5.2.20.0090.0399.00
5.2.10.0060.0308.92
5.2.00.0100.0478.78
5.1.60.0100.0218.07
5.1.50.0070.0358.06
5.1.40.0080.0358.04
5.1.30.0070.0278.40
5.1.20.0020.0328.42
5.1.10.0060.0258.14
5.1.00.0000.0318.14
5.0.50.0060.0226.62
5.0.40.0040.0196.48
5.0.30.0030.0336.29
5.0.20.0040.0226.27
5.0.10.0050.0246.25
5.0.00.0040.0306.24
4.4.90.0060.0134.78
4.4.80.0040.0164.75
4.4.70.0060.0204.75
4.4.60.0030.0224.75
4.4.50.0050.0204.77
4.4.40.0040.0344.71
4.4.30.0080.0194.76
4.4.20.0080.0324.84
4.4.10.0020.0224.85
4.4.00.0060.0474.76
4.3.110.0030.0344.67
4.3.100.0030.0254.67
4.3.90.0020.0234.64
4.3.80.0040.0274.58
4.3.70.0060.0134.63
4.3.60.0030.0164.63
4.3.50.0040.0164.63
4.3.40.0020.0264.54
4.3.30.0050.0203.29
4.3.20.0030.0193.27
4.3.10.0040.0173.23
4.3.00.0000.0236.73

preferences:
40.68 ms | 401 KiB | 5 Q