3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { public $avar; public function __isset($varname) { var_dump('__isset called'); return true; } } class B extends A { public function hasAVar(){ return property_exists($this, 'avar'); } public function hasBVar(){ return property_exists($this, 'bvar'); } public function issetVars($property) {return isset($this->{$property}); } } $b = new B(); var_dump($b->issetVars('avar')); var_dump($b->issetVars('bvar'));

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)
8.3.60.0110.00418.31
8.3.50.0130.00522.82
8.3.40.0110.00418.60
8.3.30.0150.00019.09
8.3.20.0080.00020.27
8.3.10.0080.00023.62
8.3.00.0050.00319.28
8.2.180.0090.00916.38
8.2.170.0030.01422.96
8.2.160.0030.01020.38
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0050.00326.16
8.2.120.0080.00021.10
8.2.110.0030.00722.24
8.2.100.0040.00817.72
8.2.90.0030.00619.21
8.2.80.0040.00417.97
8.2.70.0030.00717.63
8.2.60.0000.00817.80
8.2.50.0040.00418.07
8.2.40.0080.00018.09
8.2.30.0000.00717.94
8.2.20.0040.00417.68
8.2.10.0040.00418.02
8.2.00.0030.00517.71
8.1.280.0070.01125.92
8.1.270.0080.00023.79
8.1.260.0080.00026.35
8.1.250.0000.00728.09
8.1.240.0060.00323.66
8.1.230.0090.00419.22
8.1.220.0030.00517.77
8.1.210.0000.00918.77
8.1.200.0000.00917.35
8.1.190.0000.00817.23
8.1.180.0050.00318.10
8.1.170.0000.00818.65
8.1.160.0040.00421.94
8.1.150.0040.00418.84
8.1.140.0030.00617.50
8.1.130.0000.00717.84
8.1.120.0000.00717.40
8.1.110.0040.00417.36
8.1.100.0070.00017.52
8.1.90.0060.00317.52
8.1.80.0030.00617.46
8.1.70.0050.00317.45
8.1.60.0040.00417.50
8.1.50.0000.00817.56
8.1.40.0080.00017.54
8.1.30.0030.00617.56
8.1.20.0040.00417.62
8.1.10.0020.00517.50
8.1.00.0050.00317.28
8.0.300.0040.00418.77
8.0.290.0050.00216.72
8.0.280.0050.00318.32
8.0.270.0030.00317.26
8.0.260.0000.00717.21
8.0.250.0040.00416.86
8.0.240.0040.00416.88
8.0.230.0000.00716.96
8.0.220.0000.00716.87
8.0.210.0000.00716.82
8.0.200.0000.00616.95
8.0.190.0050.00316.96
8.0.180.0000.01016.87
8.0.170.0030.00616.84
8.0.160.0070.00016.73
8.0.150.0070.00016.77
8.0.140.0030.00616.77
8.0.130.0000.00613.30
8.0.120.0000.00816.75
8.0.110.0030.00516.86
8.0.100.0000.00716.93
8.0.90.0070.00016.68
8.0.80.0070.01516.93
8.0.70.0030.00616.73
8.0.60.0030.00516.96
8.0.50.0070.00016.75
8.0.30.0170.00217.20
8.0.20.0130.00517.40
8.0.10.0000.00816.91
8.0.00.0040.01616.78
7.4.330.0050.00015.14
7.4.320.0000.00616.57
7.4.300.0060.00016.55
7.4.290.0030.00316.52
7.4.280.0000.01016.63
7.4.270.0030.00316.59
7.4.260.0080.00316.51
7.4.250.0000.00716.46
7.4.240.0010.00616.55
7.4.230.0040.00416.52
7.4.220.0140.00516.70
7.4.210.0060.00716.59
7.4.200.0030.00516.68
7.4.160.0040.01216.67
7.4.150.0060.02517.40
7.4.140.0080.01217.86
7.4.130.0080.01116.46
7.4.120.0090.00816.50
7.4.110.0120.00616.38
7.4.100.0100.00716.58
7.4.90.0110.00616.44
7.4.80.0080.01119.39
7.4.70.0000.01916.46
7.4.60.0110.00716.38
7.4.50.0040.00416.65
7.4.40.0060.01016.40
7.4.30.0080.00916.47
7.4.00.0090.00714.98
7.3.330.0030.00313.30
7.3.320.0000.00813.17
7.3.310.0070.00016.11
7.3.300.0030.00316.35
7.3.290.0100.01016.22
7.3.280.0070.00816.31
7.3.270.0040.01517.40
7.3.260.0110.00816.32
7.3.250.0080.00916.35
7.3.240.0120.00916.22
7.3.230.0080.00916.41
7.3.210.0100.01016.49
7.3.200.0070.01419.39
7.3.190.0110.00616.16
7.3.180.0040.01216.36
7.3.170.0100.00316.49
7.3.160.0150.00016.38
7.3.120.0130.00615.03
7.3.110.0070.01014.74
7.3.100.0000.01714.79
7.3.90.0070.00714.62
7.3.80.0040.01114.71
7.3.70.0060.00614.81
7.3.60.0070.00714.79
7.3.50.0030.00814.59
7.3.40.0000.01214.84
7.3.30.0070.00414.52
7.3.20.0000.01516.34
7.3.10.0000.01516.46
7.3.00.0070.00716.34
7.2.330.0100.01016.55
7.2.320.0100.00716.43
7.2.310.0060.01216.64
7.2.300.0110.00616.61
7.2.290.0070.01016.71
7.2.250.0070.01015.10
7.2.240.0070.01115.09
7.2.230.0110.00715.28
7.2.220.0030.00715.20
7.2.210.0040.00815.27
7.2.200.0030.00814.96
7.2.190.0000.01515.15
7.2.180.0000.01414.88
7.2.170.0110.00414.89
7.2.60.0100.00316.88
7.2.00.0070.01119.34
7.1.330.0100.00315.86
7.1.320.0080.00015.82
7.1.310.0000.01315.84
7.1.300.0060.00915.61
7.1.290.0070.01015.48
7.1.280.0040.01115.61
7.1.270.0080.00415.43
7.1.260.0070.00715.67
7.1.200.0080.00415.68
7.1.100.0090.00617.70
7.1.70.0050.00317.29
7.1.60.0090.01519.40
7.1.50.0180.00716.96
7.1.00.0030.07722.43
7.0.200.0760.00014.66
7.0.140.0030.07321.96
7.0.60.0030.04019.93
7.0.50.0130.04717.84
7.0.40.0070.07320.16
7.0.30.0270.06720.17
7.0.20.0300.08320.10
7.0.10.0030.09020.10
7.0.00.0000.04720.09
5.6.280.0030.07320.91
5.6.210.0100.07720.55
5.6.200.0000.09318.27
5.6.190.0030.08320.55
5.6.180.0330.07020.41
5.6.170.0200.04720.62
5.6.160.0100.08020.48
5.6.150.0100.08318.14
5.6.140.0100.07718.20
5.6.130.0070.06718.17
5.6.120.0000.08321.00
5.6.110.0100.06721.00
5.6.100.0030.07021.11
5.6.90.0130.08020.96
5.6.80.0130.04720.51
5.5.350.0100.08020.43
5.5.340.0130.06717.94
5.5.330.0070.04320.42
5.5.320.0400.07720.20
5.5.310.0300.07320.36
5.5.300.0070.08017.98
5.5.290.0130.07318.07
5.5.280.0130.07020.70
5.5.270.0070.07320.80
5.5.260.0070.07320.73
5.5.250.0070.07320.79
5.5.240.0270.07020.16
5.4.450.0170.04319.39
5.4.440.0300.05019.40
5.4.430.0230.04319.16
5.4.420.0270.04319.41
5.4.410.0400.02719.43
5.4.400.0400.03718.83
5.4.390.0170.04319.22
5.4.380.0300.07018.74
5.4.370.0470.05018.50
5.4.360.0400.05718.47
5.4.350.0500.07318.61
5.4.340.0470.05018.59
5.4.320.0060.03612.50
5.4.310.0040.04412.50
5.4.300.0060.03712.50
5.4.290.0020.04112.50
5.4.280.0040.03712.40
5.4.270.0050.03712.39
5.4.260.0060.03712.40
5.4.250.0050.03812.39
5.4.240.0040.03812.39
5.4.230.0030.04012.39
5.4.220.0080.03412.39
5.4.210.0070.04212.39
5.4.200.0100.05112.39
5.4.190.0060.03512.39
5.4.180.0080.03412.39
5.4.170.0070.03612.40
5.4.160.0120.02912.39
5.4.150.0090.03212.39
5.4.140.0040.03912.07
5.4.130.0040.03812.06
5.4.120.0070.03412.02
5.4.110.0080.03412.02
5.4.100.0090.03312.02
5.4.90.0030.04112.02
5.4.80.0060.03712.02
5.4.70.0060.03412.01
5.4.60.0060.03512.01
5.4.50.0070.03412.02
5.4.40.0060.03612.00
5.4.30.0050.03612.00
5.4.20.0050.03612.00
5.4.10.0060.03412.00
5.4.00.0070.03411.49
5.3.290.0040.04212.80
5.3.280.0070.04112.71
5.3.270.0040.04412.72
5.3.260.0080.04212.72
5.3.250.0090.04312.72
5.3.240.0070.03612.72
5.3.230.0080.04212.70
5.3.220.0080.03912.68
5.3.210.0090.04012.68
5.3.200.0030.04712.68
5.3.190.0060.03812.68
5.3.180.0120.04112.68
5.3.170.0090.04612.67
5.3.160.0100.03612.67
5.3.150.0110.03412.68
5.3.140.0050.03812.66
5.3.130.0110.03412.66
5.3.120.0070.03912.66
5.3.110.0100.04412.66
5.3.100.0080.03612.12
5.3.90.0040.03812.11
5.3.80.0040.03812.09
5.3.70.0070.03312.09
5.3.60.0060.04512.08
5.3.50.0060.03512.03
5.3.40.0080.03612.03
5.3.30.0070.03311.99
5.3.20.0080.03311.77
5.3.10.0070.03211.73
5.3.00.0050.03711.72
5.2.170.0060.0299.22
5.2.160.0060.0279.23
5.2.150.0060.0289.22
5.2.140.0040.0309.22
5.2.130.0040.0289.18
5.2.120.0040.0289.18
5.2.110.0050.0289.19
5.2.100.0020.0309.19
5.2.90.0060.0269.19
5.2.80.0050.0359.18
5.2.70.0030.0359.18
5.2.60.0030.0319.13
5.2.50.0050.0289.10
5.2.40.0040.0289.07
5.2.30.0040.0299.05
5.2.20.0030.0299.04
5.2.10.0040.0278.95
5.2.00.0040.0298.82
5.1.60.0030.0258.09
5.1.50.0030.0258.09
5.1.40.0020.0268.08
5.1.30.0040.0268.43
5.1.20.0040.0268.45
5.1.10.0050.0268.17
5.1.00.0060.0268.17
5.0.50.0050.0196.65
5.0.40.0050.0186.50
5.0.30.0040.0306.32
5.0.20.0030.0196.29
5.0.10.0050.0186.27
5.0.00.0020.0326.25
4.4.90.0020.0164.78
4.4.80.0050.0134.75
4.4.70.0020.0164.76
4.4.60.0000.0184.76
4.4.50.0030.0144.77
4.4.40.0030.0244.71
4.4.30.0030.0154.76
4.4.20.0030.0154.84
4.4.10.0030.0154.85
4.4.00.0040.0244.76
4.3.110.0030.0154.67
4.3.100.0030.0144.66
4.3.90.0020.0154.63
4.3.80.0020.0244.58
4.3.70.0060.0224.63
4.3.60.0030.0144.63
4.3.50.0010.0164.63
4.3.40.0020.0344.54
4.3.30.0020.0173.30
4.3.20.0010.0163.28
4.3.10.0020.0153.23
4.3.00.0130.02315.62

preferences:
41.4 ms | 401 KiB | 5 Q