3v4l.org

run code in 300+ PHP versions simultaneously
<?php $test = array('test1' => 'abc'); if (array_key_exists('test1', $test )) { unset($test ['test1']); }

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)
8.3.40.0100.00618.72
8.3.30.0100.00319.04
8.3.20.0040.00420.34
8.3.10.0040.00423.66
8.3.00.0040.00419.13
8.2.170.0120.00322.96
8.2.160.0070.01320.39
8.2.150.0060.00324.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0070.00022.06
8.2.110.0060.00320.54
8.2.100.0070.00418.16
8.2.90.0000.00719.17
8.2.80.0040.00417.97
8.2.70.0030.00517.63
8.2.60.0060.00317.93
8.2.50.0080.00018.07
8.2.40.0000.00819.94
8.2.30.0050.00318.04
8.2.20.0000.00817.78
8.2.10.0000.00718.13
8.2.00.0040.00417.59
8.1.270.0050.00322.14
8.1.260.0070.00026.35
8.1.250.0000.00728.09
8.1.240.0090.00023.85
8.1.230.0110.00019.07
8.1.220.0060.00317.74
8.1.210.0040.00418.77
8.1.200.0040.00417.22
8.1.190.0000.00817.23
8.1.180.0070.00418.10
8.1.170.0000.00918.46
8.1.160.0030.00321.93
8.1.150.0040.00418.82
8.1.140.0070.00017.30
8.1.130.0050.00317.82
8.1.120.0000.00717.42
8.1.110.0040.00417.40
8.1.100.0000.00717.34
8.1.90.0050.00317.38
8.1.80.0040.00417.39
8.1.70.0000.00717.25
8.1.60.0000.00917.50
8.1.50.0030.00517.36
8.1.40.0000.00817.49
8.1.30.0040.00417.57
8.1.20.0000.00717.42
8.1.10.0040.00417.53
8.1.00.0030.00617.35
8.0.300.0030.00518.77
8.0.290.0040.00416.63
8.0.280.0000.00718.25
8.0.270.0040.00417.21
8.0.260.0060.00017.20
8.0.250.0000.00616.80
8.0.240.0030.00316.85
8.0.230.0040.00416.86
8.0.220.0050.00216.87
8.0.210.0000.00716.78
8.0.200.0000.00716.81
8.0.190.0030.00316.87
8.0.180.0040.00416.85
8.0.170.0000.00816.88
8.0.160.0070.00416.88
8.0.150.0000.00716.74
8.0.140.0070.00016.78
8.0.130.0030.00313.32
8.0.120.0040.00416.77
8.0.110.0040.00416.78
8.0.100.0040.00416.67
8.0.90.0000.00716.81
8.0.80.0140.00716.75
8.0.70.0030.00616.82
8.0.60.0000.00716.86
8.0.50.0040.00416.64
8.0.30.0100.01117.13
8.0.20.0100.00917.40
8.0.10.0040.00416.88
8.0.00.0110.00816.65
7.4.330.0050.00015.00
7.4.320.0060.00016.52
7.4.300.0020.00416.57
7.4.290.0000.00716.63
7.4.280.0050.00216.54
7.4.270.0080.00016.41
7.4.260.0000.00716.60
7.4.250.0040.00416.57
7.4.240.0020.00516.55
7.4.230.0040.00416.63
7.4.220.0120.00716.54
7.4.210.0110.00316.50
7.4.200.0040.00416.66
7.4.160.0030.01216.31
7.4.150.0150.00417.40
7.4.140.0110.00817.86
7.4.130.0060.01016.62
7.4.120.0100.00816.45
7.4.110.0110.00716.65
7.4.100.0030.01316.59
7.4.90.0130.00316.38
7.4.80.0170.00719.39
7.4.70.0120.00816.43
7.4.60.0160.00016.37
7.4.50.0020.00216.64
7.4.40.0150.00616.66
7.4.30.0110.00616.70
7.4.00.0100.00714.82
7.3.330.0050.00013.05
7.3.320.0000.00512.95
7.3.310.0030.00316.08
7.3.300.0080.00016.21
7.3.290.0030.01116.20
7.3.280.0100.00916.22
7.3.270.0070.01017.40
7.3.260.0100.00716.39
7.3.250.0110.00816.42
7.3.240.0120.00916.37
7.3.230.0090.00916.39
7.3.210.0090.00916.19
7.3.200.0090.01219.39
7.3.190.0090.00916.13
7.3.180.0100.00716.43
7.3.170.0090.01216.28
7.3.160.0070.01016.28
7.2.330.0080.01116.38
7.2.320.0100.01016.28
7.2.310.0040.01216.49
7.2.300.0100.00716.48
7.2.290.0100.00716.65
7.2.00.0030.01018.88
7.1.100.0250.00417.94
7.1.70.0060.00917.21
7.1.60.0110.01419.32
7.1.50.0110.00416.93
7.1.00.0030.07722.55
7.0.200.0000.01016.74
7.0.140.0100.06321.96
7.0.60.0100.07719.89
7.0.50.0000.04317.79
7.0.40.0030.05020.27
7.0.30.0530.07320.17
7.0.20.0370.08020.11
7.0.10.0070.08720.09
7.0.00.0070.05720.41
5.6.280.0070.07021.09
5.6.210.0100.07720.66
5.6.200.0130.07718.12
5.6.190.0070.04020.57
5.6.180.0370.07320.27
5.6.170.0270.03720.50
5.6.160.0070.08720.50
5.6.150.0100.05018.18
5.6.140.0130.04318.10
5.6.130.0070.04718.11
5.6.120.0030.08720.76
5.6.110.0170.07020.96
5.6.100.0030.04021.03
5.6.90.0070.08020.87
5.6.80.0070.08020.32
5.5.350.0200.07320.44
5.5.340.0070.08017.92
5.5.330.0000.05320.18
5.5.320.0500.04020.24
5.5.310.0100.04720.17
5.5.300.0070.03717.91
5.5.290.0000.04317.93
5.5.280.0170.07720.84
5.5.270.0070.08320.63
5.5.260.0070.07320.84
5.5.250.0170.06320.61
5.5.240.0200.02720.18
5.4.450.0400.05719.59
5.4.440.0930.05719.41
5.4.430.1000.05719.54
5.4.420.0670.00019.35
5.4.410.0630.00019.22
5.4.400.0630.00019.21
5.4.390.0630.00019.07
5.4.380.0700.00019.07
5.4.370.0700.00019.06
5.4.360.0630.00018.92
5.4.350.0670.00019.05
5.4.340.0050.03711.97
5.4.320.0070.03512.46
5.4.310.0040.04112.45
5.4.300.0080.04212.45
5.4.290.0100.04712.45
5.4.280.0120.05112.35
5.4.270.0090.04412.35
5.4.260.0060.04012.35
5.4.250.0050.03912.35
5.4.240.0060.03612.35
5.4.230.0070.03712.34
5.4.220.0110.03012.34
5.4.210.0070.03512.34
5.4.200.0090.03512.34
5.4.190.0050.03712.34
5.4.180.0090.03512.34
5.4.170.0050.03912.35
5.4.160.0080.03512.34
5.4.150.0060.03612.34
5.4.140.0040.03912.02
5.4.130.0070.03512.02
5.4.120.0070.03611.97
5.4.110.0070.03911.97
5.4.100.0050.03811.97
5.4.90.0020.04111.96
5.4.80.0090.03411.96
5.4.70.0060.03511.96
5.4.60.0060.03711.96
5.4.50.0050.04411.96
5.4.40.0070.03411.95
5.4.30.0050.03711.95
5.4.20.0060.03511.95
5.4.10.0070.03411.94
5.4.00.0060.03611.44
5.3.290.0040.04412.80
5.3.280.0040.04112.71
5.3.270.0030.04312.72
5.3.260.0130.05412.72
5.3.250.0070.05312.72
5.3.240.0080.05112.72
5.3.230.0070.05212.71
5.3.220.0080.05212.68
5.3.210.0050.04112.68
5.3.200.0060.04012.68
5.3.190.0060.03712.68
5.3.180.0060.03712.67
5.3.170.0070.03512.67
5.3.160.0080.03512.68
5.3.150.0040.03912.67
5.3.140.0070.03512.66
5.3.130.0060.03912.66
5.3.120.0100.03512.66
5.3.110.0050.04012.66
5.3.100.0080.03412.11
5.3.90.0090.03312.08
5.3.80.0060.04512.08
5.3.70.0090.04412.08
5.3.60.0070.04212.06
5.3.50.0140.04012.00
5.3.40.0040.05112.00
5.3.30.0060.03511.94
5.3.20.0050.03611.71
5.3.10.0050.03811.69
5.3.00.0100.03611.67
5.2.170.0080.0389.18
5.2.160.0110.0489.18
5.2.150.0070.0289.18
5.2.140.0050.0299.17
5.2.130.0080.0299.13
5.2.120.0030.0339.14
5.2.110.0060.0279.14
5.2.100.0040.0299.13
5.2.90.0050.0299.14
5.2.80.0060.0319.13
5.2.70.0070.0329.13
5.2.60.0070.0339.09
5.2.50.0020.0369.05
5.2.40.0050.0309.04
5.2.30.0010.0389.00
5.2.20.0080.0268.99
5.2.10.0060.0278.92
5.2.00.0030.0318.77
5.1.60.0060.0228.06
5.1.50.0030.0268.06
5.1.40.0020.0278.04
5.1.30.0060.0248.39
5.1.20.0030.0288.41
5.1.10.0020.0288.14
5.1.00.0050.0258.14
5.0.50.0040.0196.61
5.0.40.0030.0196.47
5.0.30.0020.0376.29
5.0.20.0070.0166.26
5.0.10.0060.0176.24
5.0.00.0030.0326.23
4.4.90.0030.0154.77
4.4.80.0030.0154.75
4.4.70.0020.0164.75
4.4.60.0030.0154.75
4.4.50.0040.0144.77
4.4.40.0060.0264.71
4.4.30.0010.0174.76
4.4.20.0030.0164.85
4.4.10.0030.0154.85
4.4.00.0050.0234.76
4.3.110.0000.0194.67
4.3.100.0040.0144.66
4.3.90.0020.0164.63
4.3.80.0010.0264.58
4.3.70.0110.0304.63
4.3.60.0030.0204.63
4.3.50.0040.0234.63
4.3.40.0030.0284.54
4.3.30.0030.0233.28
4.3.20.0030.0163.25
4.3.10.0000.0183.21
4.3.00.0200.0177.32

preferences:
54.94 ms | 400 KiB | 5 Q