3v4l.org

run code in 300+ PHP versions simultaneously
<?php $data = array('key' => null); var_dump(isset($data['key'])); var_dump(array_key_exists('key', $data)); var_dump(isset($data['key']) && $data['key']);

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)
8.3.40.0170.00318.84
8.3.30.0120.00919.02
8.3.20.0070.00020.34
8.3.10.0040.00421.90
8.3.00.0050.00318.00
8.2.170.0070.00722.96
8.2.160.0100.00320.52
8.2.150.0040.01124.18
8.2.140.0060.01224.66
8.2.130.0130.00626.16
8.2.120.0100.01021.03
8.2.110.0000.00920.34
8.2.100.0040.00717.78
8.2.90.0000.00819.21
8.2.80.0040.00417.97
8.2.70.0070.00317.50
8.2.60.0000.00818.04
8.2.50.0050.00318.07
8.2.40.0000.00818.22
8.2.30.0080.00018.00
8.2.20.0040.00417.86
8.2.10.0050.00318.12
8.2.00.0000.00717.67
8.1.270.0040.00423.84
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0090.00023.92
8.1.230.0070.00417.42
8.1.220.0000.00817.78
8.1.210.0040.00418.77
8.1.200.0060.00317.22
8.1.190.0040.00417.11
8.1.180.0040.00418.10
8.1.170.0000.00918.54
8.1.160.0000.00722.02
8.1.150.0040.00418.85
8.1.140.0040.00417.45
8.1.130.0030.00317.74
8.1.120.0000.00817.48
8.1.110.0040.00417.42
8.1.100.0000.00717.51
8.1.90.0030.00717.38
8.1.80.0030.00517.38
8.1.70.0030.00317.39
8.1.60.0030.00617.63
8.1.50.0030.00517.58
8.1.40.0040.00417.41
8.1.30.0090.00017.69
8.1.20.0040.00417.68
8.1.10.0070.00017.41
8.1.00.0080.00017.43
8.0.300.0070.00018.77
8.0.290.0020.00516.75
8.0.280.0040.00418.36
8.0.270.0040.00417.30
8.0.260.0000.00817.25
8.0.250.0000.00716.85
8.0.240.0070.00016.87
8.0.230.0000.00716.94
8.0.220.0030.00316.80
8.0.210.0070.00016.82
8.0.200.0070.00017.00
8.0.190.0050.00316.93
8.0.180.0040.00416.93
8.0.170.0070.00016.79
8.0.160.0030.00416.79
8.0.150.0000.00716.88
8.0.140.0070.00316.76
8.0.130.0030.00313.31
8.0.120.0050.00316.91
8.0.110.0080.00016.86
8.0.100.0040.00416.79
8.0.90.0040.00416.93
8.0.80.0120.00316.84
8.0.70.0020.00516.93
8.0.60.0000.00816.91
8.0.50.0040.00416.78
8.0.30.0090.00816.94
8.0.20.0130.01017.40
8.0.10.0000.00716.97
8.0.00.0090.00816.76
7.4.330.0020.00215.14
7.4.320.0030.00316.60
7.4.300.0060.00016.51
7.4.290.0040.00416.49
7.4.280.0050.00216.59
7.4.270.0000.00716.41
7.4.260.0070.00016.51
7.4.250.0030.00516.61
7.4.240.0020.00516.54
7.4.230.0030.00316.57
7.4.220.0120.00916.54
7.4.210.0040.01116.54
7.4.200.0050.00216.60
7.4.160.0110.00416.53
7.4.150.0100.01417.40
7.4.140.0100.01117.86
7.4.130.0090.00816.53
7.4.120.0130.00816.53
7.4.110.0100.00716.39
7.4.100.0090.00916.55
7.4.90.0120.00616.54
7.4.80.0110.00619.39
7.4.70.0100.00716.47
7.4.60.0140.00316.55
7.4.50.0000.00516.46
7.4.40.0130.00316.34
7.4.30.0170.00616.54
7.4.00.0040.01114.77
7.3.330.0060.00013.18
7.3.320.0000.00513.10
7.3.310.0020.00516.31
7.3.300.0030.00316.23
7.3.290.0160.00316.20
7.3.280.0060.01116.23
7.3.270.0090.01217.40
7.3.260.0160.00816.17
7.3.250.0080.00816.47
7.3.240.0190.00316.15
7.3.230.0100.00616.39
7.3.210.0070.01016.44
7.3.200.0130.00819.39
7.3.190.0120.00616.49
7.3.180.0150.00016.19
7.3.170.0100.00616.36
7.3.160.0030.01316.21
7.3.120.0080.00814.79
7.3.110.0060.01314.53
7.3.100.0150.00414.61
7.3.90.0000.01214.93
7.3.80.0060.00314.41
7.3.70.0070.00314.46
7.3.60.0040.01114.77
7.3.50.0000.01414.58
7.3.40.0060.00314.88
7.3.30.0060.00914.73
7.3.20.0080.00616.50
7.3.10.0040.01116.61
7.3.00.0040.00716.48
7.2.330.0030.01816.26
7.2.320.0040.01816.48
7.2.310.0090.01216.32
7.2.300.0140.00316.41
7.2.290.0090.00616.51
7.2.250.0070.01114.85
7.2.240.0070.01314.51
7.2.230.0120.00415.00
7.2.220.0070.01114.60
7.2.210.0080.00814.69
7.2.200.0070.00714.78
7.2.190.0000.01514.97
7.2.180.0000.01414.80
7.2.170.0060.00914.80
7.2.160.0000.01514.71
7.2.150.0040.00716.88
7.2.140.0040.01116.85
7.2.130.0100.00316.73
7.2.120.0100.00716.48
7.2.110.0090.00616.79
7.2.100.0110.00016.83
7.2.90.0080.00816.89
7.2.80.0110.00716.86
7.2.70.0040.00816.69
7.2.60.0000.01216.95
7.2.50.0000.01316.96
7.2.40.0000.01316.87
7.2.30.0070.00716.80
7.2.20.0110.00016.80
7.2.10.0170.00016.79
7.2.00.0090.00618.01
7.1.330.0090.00615.71
7.1.320.0070.00715.54
7.1.310.0080.00815.66
7.1.300.0090.00615.79
7.1.290.0070.00715.93
7.1.280.0060.00615.40
7.1.270.0090.00615.63
7.1.260.0060.00615.69
7.1.250.0070.01015.84
7.1.240.0100.00315.77
7.1.230.0050.00515.54
7.1.220.0090.00315.88
7.1.210.0100.00315.73
7.1.200.0070.00715.60
7.1.190.0030.00915.63
7.1.180.0040.00815.84
7.1.170.0000.00815.50
7.1.160.0030.01015.82
7.1.150.0030.01115.74
7.1.140.0090.00615.81
7.1.130.0030.00615.76
7.1.120.0070.01015.77
7.1.110.0090.00615.80
7.1.100.0110.00916.86
7.1.90.0030.01015.70
7.1.80.0070.01015.49
7.1.70.0080.00616.30
7.1.60.0070.01017.67
7.1.50.0160.01025.27
7.1.40.0080.00415.80
7.1.30.0040.00715.79
7.1.20.0100.00315.84
7.1.10.0000.00915.64
7.1.00.0070.04019.18
7.0.330.0090.00315.00
7.0.320.0030.00915.50
7.0.310.0100.00315.12
7.0.300.0080.00315.30
7.0.290.0040.00815.39
7.0.280.0060.00715.25
7.0.270.0070.00315.10
7.0.260.0060.00915.32
7.0.250.0030.01315.39
7.0.240.0080.00415.17
7.0.230.0060.00315.50
7.0.220.0060.01015.15
7.0.210.0030.01215.28
7.0.200.0070.00216.06
7.0.190.0040.01115.21
7.0.180.0070.00715.34
7.0.170.0090.00315.38
7.0.160.0060.00615.29
7.0.150.0120.00315.27
7.0.140.0030.03618.52
7.0.130.0030.00915.03
7.0.120.0040.00715.29
7.0.110.0080.00615.34
7.0.100.0040.00815.23
7.0.90.0030.00915.21
7.0.80.0030.00915.22
7.0.70.0060.00615.50
7.0.60.0100.04317.64
7.0.50.0100.03016.71
7.0.40.0030.02716.76
7.0.30.0120.03116.75
7.0.20.0180.02316.83
7.0.10.0070.04616.63
7.0.00.0090.03916.80
5.6.400.0060.00614.44
5.6.390.0030.01014.18
5.6.380.0070.01014.48
5.6.370.0090.00614.32
5.6.360.0100.00314.20
5.6.350.0060.00914.34
5.6.340.0060.00914.34
5.6.330.0060.00614.09
5.6.320.0070.00614.24
5.6.310.0000.01114.00
5.6.300.0080.00814.42
5.6.290.0040.00814.40
5.6.280.0050.04017.71
5.6.270.0030.01014.29
5.6.260.0050.00514.36
5.6.250.0090.00614.04
5.6.240.0070.01014.58
5.6.230.0060.00314.25
5.6.220.0050.00514.34
5.6.210.0100.03817.37
5.6.200.0030.02616.15
5.6.190.0110.03317.42
5.6.180.0130.03317.22
5.6.170.0150.04517.29
5.6.160.0080.03017.52
5.6.150.0050.03816.27
5.6.140.0120.04016.14
5.6.130.0110.02616.06
5.6.120.0050.03217.59
5.6.110.0100.04317.62
5.6.100.0030.03317.58
5.6.90.0070.03917.65
5.6.80.0070.04217.29
5.6.70.0060.00314.01
5.6.60.0030.00514.38
5.6.50.0000.01713.97
5.6.40.0090.00314.26
5.6.30.0080.00814.45
5.6.20.0070.00714.16
5.6.10.0040.00814.28
5.6.00.0100.00614.35
5.5.380.0040.01414.06
5.5.370.0060.00614.31
5.5.360.0100.00313.88
5.5.350.2190.02517.35
5.5.340.0080.03816.10
5.5.330.0060.03017.22
5.5.320.0180.04117.11
5.5.310.0220.03617.26
5.5.300.0080.02315.98
5.5.290.0160.03115.99
5.5.280.0130.04017.64
5.5.270.0100.03217.50
5.5.260.0070.04217.44
5.5.250.0060.03117.45
5.5.240.0090.03717.27
5.5.230.0000.01214.25
5.5.220.0000.00814.24
5.5.210.0040.00714.26
5.5.200.0090.00914.00
5.5.190.0030.01314.50
5.5.180.0040.00413.98
5.5.170.0000.00814.27
5.5.160.0070.00713.87
5.5.150.0080.00813.79
5.5.140.0110.00713.96
5.5.130.0030.01014.20
5.5.120.0000.01313.78
5.5.110.0090.00614.36
5.5.100.0040.01114.25
5.5.90.0130.00314.32
5.5.80.0030.01014.04
5.5.70.0090.00614.28
5.5.60.0030.01014.13
5.5.50.0100.00313.93
5.5.40.0040.01213.98
5.5.30.0060.00913.93
5.5.20.0030.01213.95
5.5.10.0030.01014.25
5.5.00.0000.01314.11
5.4.450.0480.02915.36
5.4.440.0300.03915.12
5.4.430.0430.02115.08
5.4.420.0300.02815.08
5.4.410.0150.03115.03
5.4.400.0360.03114.82
5.4.390.0100.02515.18
5.4.380.0080.02814.83
5.4.370.0070.02214.67
5.4.360.0110.02014.76
5.4.350.0040.03011.33
5.4.340.0040.02311.41
5.4.330.0040.00710.73
5.4.320.0050.02811.57
5.4.310.0100.02311.72
5.4.300.0080.01911.57
5.4.290.0070.02511.56
5.4.280.0030.02311.52
5.4.270.0050.02311.59
5.4.260.0080.02111.63
5.4.250.0080.02111.64
5.4.240.0040.02211.61
5.4.230.0040.02011.56
5.4.220.0050.02311.63
5.4.210.0070.01911.68
5.4.200.0070.02511.66
5.4.190.0040.02211.51
5.4.180.0060.02111.66
5.4.170.0100.01611.64
5.4.160.0080.02311.60
5.4.150.0020.02611.51
5.4.140.0060.02811.53
5.4.130.0070.02011.51
5.4.120.0050.02911.42
5.4.110.0100.02211.33
5.4.100.0020.02511.39
5.4.90.0060.02311.40
5.4.80.0050.02311.42
5.4.70.0060.02511.42
5.4.60.0070.02311.37
5.4.50.0040.02611.40
5.4.40.0110.01611.46
5.4.30.0040.02811.41
5.4.20.0060.02411.41
5.4.10.0060.02511.51
5.4.00.0030.02611.06
5.3.290.0050.02811.74
5.3.280.0060.02011.70
5.3.270.0030.02511.70
5.3.260.0040.02611.70
5.3.250.0060.01911.70
5.3.240.0020.02211.70
5.3.230.0060.02411.70
5.3.220.0070.02311.68
5.3.210.0050.02711.68
5.3.200.0080.01811.68
5.3.190.0060.02111.68
5.3.180.0070.02411.68
5.3.170.0070.02211.68
5.3.160.0060.02911.68
5.3.150.0040.02311.68
5.3.140.0040.02311.67
5.3.130.0050.02511.67
5.3.120.0060.02911.67
5.3.110.0080.02211.67
5.3.100.0070.02211.40
5.3.90.0050.02511.38
5.3.80.0070.01811.38
5.3.70.0070.02011.38
5.3.60.0060.02211.37
5.3.50.0030.02411.34
5.3.40.0060.02211.34
5.3.30.0060.02611.31
5.3.20.0060.02111.20
5.3.10.0050.02711.19
5.3.00.0040.02211.18
5.2.170.0030.0329.18
5.2.160.0040.0309.17
5.2.150.0070.0329.18
5.2.140.0120.0439.18
5.2.130.0080.0319.13
5.2.120.0050.0379.14
5.2.110.0070.0309.14
5.2.100.0090.0319.14
5.2.90.0060.0379.14
5.2.80.0100.0409.13
5.2.70.0090.0289.14
5.2.60.0080.0319.09
5.2.50.0070.0299.06
5.2.40.0030.0309.04
5.2.30.0040.0329.01
5.2.20.0040.0298.99
5.2.10.0060.0318.91
5.2.00.0050.0308.77
5.1.60.0040.0278.06
5.1.50.0040.0258.06
5.1.40.0020.0268.04
5.1.30.0020.0298.39
5.1.20.0060.0258.41
5.1.10.0030.0278.13
5.1.00.0060.0248.14
5.0.50.0040.0266.61
5.0.40.0040.0196.47
5.0.30.0030.0316.29
5.0.20.0030.0196.26
5.0.10.0030.0206.23
5.0.00.0050.0296.23
4.4.90.0000.0184.78
4.4.80.0020.0164.75
4.4.70.0050.0234.75
4.4.60.0020.0224.76
4.4.50.0050.0174.77
4.4.40.0060.0244.71
4.4.30.0030.0254.76
4.4.20.0010.0234.85
4.4.10.0050.0184.85
4.4.00.0010.0304.76
4.3.110.0070.0164.67
4.3.100.0020.0154.67
4.3.90.0040.0194.63
4.3.80.0030.0284.58
4.3.70.0040.0144.63
4.3.60.0020.0214.63
4.3.50.0040.0254.63
4.3.40.0020.0294.54
4.3.30.0030.0203.28
4.3.20.0020.0173.25
4.3.10.0010.0163.22
4.3.00.0130.0238.41

preferences:
35.07 ms | 400 KiB | 5 Q