3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = new \ArrayObject(array(), 2); $a->a =0; var_dump($a->a); var_dump($a['a']); var_dump(isset($a->a)); var_dump(isset($a['a']));

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)
8.3.60.0070.00718.29
8.3.50.0080.01222.05
8.3.40.0180.00018.84
8.3.30.0120.00320.34
8.3.20.0080.00020.20
8.3.10.0050.00321.93
8.3.00.0080.00022.44
8.2.180.0170.00318.54
8.2.170.0110.00422.96
8.2.160.0070.00720.47
8.2.150.0050.00324.18
8.2.140.0000.01124.66
8.2.130.0040.00426.16
8.2.120.0080.00019.54
8.2.110.0030.00719.27
8.2.100.0040.00819.66
8.2.90.0040.00419.14
8.2.80.0040.00417.97
8.2.70.0000.00817.63
8.2.60.0000.00717.80
8.2.50.0000.00818.10
8.2.40.0050.00320.50
8.2.30.0000.00718.04
8.2.20.0000.00817.71
8.2.10.0050.00317.80
8.2.00.0060.00617.71
8.1.280.0150.00025.92
8.1.270.0000.00724.66
8.1.260.0000.00826.35
8.1.250.0090.00028.09
8.1.240.0080.00021.94
8.1.230.0040.00819.54
8.1.220.0050.00317.74
8.1.210.0060.00618.77
8.1.200.0060.00317.35
8.1.190.0000.00817.10
8.1.180.0000.00818.10
8.1.170.0090.00018.71
8.1.160.0030.00322.08
8.1.150.0000.00818.62
8.1.140.0040.00417.43
8.1.130.0030.00517.86
8.1.120.0050.00217.30
8.1.110.0030.00517.32
8.1.100.0030.00317.38
8.1.90.0070.00017.36
8.1.80.0030.00517.30
8.1.70.0040.00417.33
8.1.60.0120.00017.56
8.1.50.0040.00417.43
8.1.40.0070.00017.38
8.1.30.0030.00517.56
8.1.20.0040.00417.55
8.1.10.0050.00217.43
8.1.00.0080.00017.50
8.0.300.0040.00418.77
8.0.290.0040.00416.58
8.0.280.0030.00318.30
8.0.270.0070.00017.07
8.0.260.0000.00616.67
8.0.250.0030.00316.79
8.0.240.0030.00616.83
8.0.230.0040.00416.78
8.0.220.0060.00316.80
8.0.210.0060.00316.77
8.0.200.0070.00016.91
8.0.190.0030.00416.78
8.0.180.0000.00716.85
8.0.170.0000.00816.75
8.0.160.0030.00316.89
8.0.150.0070.00016.80
8.0.140.0040.00416.77
8.0.130.0060.00013.29
8.0.120.0000.00716.82
8.0.110.0040.00416.65
8.0.100.0000.00716.84
8.0.90.0000.00816.85
8.0.80.0100.00716.71
8.0.70.0030.00416.80
8.0.60.0040.00416.85
8.0.50.0000.00816.84
8.0.30.0150.00416.79
8.0.20.0090.01017.40
8.0.10.0050.00316.81
8.0.00.0080.01016.84
7.4.330.0020.00215.00
7.4.320.0000.00716.44
7.4.300.0060.00016.43
7.4.290.0020.00516.29
7.4.280.0000.00616.36
7.4.270.0090.00016.44
7.4.260.0110.00016.38
7.4.250.0000.00716.45
7.4.240.0000.00716.45
7.4.230.0000.00716.54
7.4.220.0070.01016.45
7.4.210.0110.00516.47
7.4.200.0030.00316.41
7.4.190.0070.00016.71
7.4.160.0070.01016.29
7.4.150.0100.00717.40
7.4.140.0080.01317.86
7.4.130.0130.00616.41
7.4.120.0100.00916.47
7.4.110.0030.01316.56
7.4.100.0140.00316.43
7.4.90.0000.01816.32
7.4.80.0060.01519.39
7.4.70.0100.00716.49
7.4.60.0030.01316.43
7.4.50.0050.00316.35
7.4.40.0040.01122.77
7.4.30.0080.00816.46
7.4.00.0080.00614.82
7.3.330.0030.00313.26
7.3.320.0050.00013.12
7.3.310.0040.00316.34
7.3.300.0030.00316.37
7.3.290.0000.01816.24
7.3.280.0080.01216.25
7.3.270.0060.00917.40
7.3.260.0060.01116.57
7.3.250.0100.00916.42
7.3.240.0110.00516.52
7.3.230.0100.00616.39
7.3.210.0070.01016.50
7.3.200.0100.01019.39
7.3.190.0100.00716.36
7.3.180.0090.00616.29
7.3.170.0000.01516.46
7.3.160.0110.00516.23
7.3.120.0110.00514.56
7.3.110.0030.01514.91
7.3.100.0060.00615.01
7.3.90.0110.00014.91
7.3.80.0000.01414.61
7.3.70.0000.01114.76
7.3.60.0030.00914.67
7.3.50.0110.00414.72
7.3.40.0070.00314.44
7.3.30.0080.00014.82
7.3.20.0070.00716.67
7.3.10.0030.01016.66
7.3.00.0060.00316.62
7.2.330.0140.00416.93
7.2.320.0060.01216.79
7.2.310.0190.03516.49
7.2.300.0060.01216.61
7.2.290.0090.00616.47
7.2.250.0070.01315.00
7.2.240.0070.01414.75
7.2.230.0040.00814.96
7.2.220.0000.01615.34
7.2.210.0120.00315.00
7.2.200.0060.00615.23
7.2.190.0070.00715.10
7.2.180.0030.01015.14
7.2.170.0000.01114.96
7.2.80.0130.00016.88
7.2.60.0040.00716.91
7.1.330.0140.00015.88
7.1.320.0130.00315.93
7.1.310.0060.01015.86
7.1.300.0120.00316.02
7.1.290.0030.00715.78
7.1.280.0030.00915.79
7.1.270.0040.00415.57
7.1.260.0090.00615.85
7.1.200.0060.00915.48
7.1.100.0090.00318.07
7.1.70.0000.00817.13
7.1.60.0100.01319.43
7.1.50.0040.00716.92
7.1.00.0030.03322.51
7.0.200.0040.00416.66
7.0.140.0000.07722.09
7.0.60.0070.08319.94
7.0.50.0000.04717.92
7.0.40.0130.07320.07
7.0.30.0200.08720.13
7.0.20.0370.06720.25
7.0.10.0300.04020.16
7.0.00.0100.08020.00
5.6.280.0100.06721.03
5.6.210.0030.04020.56
5.6.200.0130.07318.13
5.6.190.0070.05320.75
5.6.180.0270.07320.33
5.6.170.0300.05020.40
5.6.160.0070.08720.54
5.6.150.0030.04318.21
5.6.140.0030.08718.10
5.6.130.0030.04018.07
5.6.120.0100.08321.02
5.6.110.0000.04321.07
5.6.100.0100.07720.97
5.6.90.0100.07721.10
5.6.80.0030.07020.38
5.6.70.0230.03320.27
5.5.350.0030.07320.43
5.5.340.0070.06718.02
5.5.330.0130.07720.23
5.5.320.0270.04020.34
5.5.310.0200.06020.20
5.5.300.0070.04017.93
5.5.290.0130.04017.91
5.5.280.0100.04320.77
5.5.270.0000.04320.75
5.5.260.0170.07320.79
5.5.250.0130.08320.67
5.5.240.0200.07020.22
5.4.450.0900.04019.64
5.4.440.0900.06319.10
5.4.430.1030.05019.45
5.4.420.0930.06019.58
5.4.410.0800.06019.50
5.4.400.1330.05318.77
5.4.390.1230.06018.52
5.4.380.0370.04718.77
5.4.370.0170.05018.70
5.4.360.0270.04018.62
5.4.350.0210.04111.97
5.4.340.0140.04111.97
5.4.320.0080.03712.46
5.4.310.0090.05212.45
5.4.300.0060.05212.45
5.4.290.0070.03812.45
5.4.280.0060.04512.35
5.4.270.0110.03612.35
5.4.260.0060.03912.35
5.4.250.0040.04412.35
5.4.240.0200.04318.88
5.4.230.0100.04718.72
5.4.220.0130.07018.81
5.4.210.0100.06018.64
5.4.200.0070.05318.77
5.4.190.0070.05018.77
5.4.180.0070.05018.93
5.4.170.0070.05718.89
5.4.160.0070.05318.70
5.4.150.0130.06318.89
5.4.140.0030.05316.27
5.4.130.0100.04316.25
5.4.120.0100.04316.24
5.4.110.0000.05316.50
5.4.100.0070.06316.50
5.4.90.0030.05016.43
5.4.80.0000.06316.40
5.4.70.0170.05716.21
5.4.60.0070.04716.39
5.4.50.0070.04716.49
5.4.40.0170.03716.22
5.4.30.0100.04716.46
5.4.20.0000.05316.36
5.4.10.0030.05016.17
5.4.00.0070.04315.72
5.3.290.0080.04712.80
5.3.280.0070.05014.63
5.3.270.0070.05314.58
5.3.260.0000.05714.38
5.3.250.0100.05014.52
5.3.240.0070.05014.31
5.3.230.0100.04714.75
5.3.220.0030.06014.57
5.3.210.0070.05014.58
5.3.200.0030.06014.40
5.3.190.0030.05314.66
5.3.180.0000.05314.33
5.3.170.0030.05014.47
5.3.160.0130.04014.62
5.3.150.0030.05314.40
5.3.140.0070.04714.45
5.3.130.0070.05314.25
5.3.120.0070.06014.38
5.3.110.0070.05014.70
5.3.100.0070.04714.08
5.3.90.0030.05013.88
5.3.80.0030.05013.79
5.3.70.0070.04714.06
5.3.60.0170.04013.87
5.3.50.0100.04314.10
5.3.40.0000.05313.89
5.3.30.0070.04313.79
5.3.20.0100.04313.70
5.3.10.0070.04713.69
5.3.00.0070.07013.55
5.2.170.0070.04010.91
5.2.160.0030.04011.05
5.2.150.0100.03710.98
5.2.140.0070.05011.14
5.2.130.0130.03311.20
5.2.120.0030.03711.12
5.2.110.0000.04310.98
5.2.100.0070.04011.11
5.2.90.0100.03311.10
5.2.80.0070.03711.10
5.2.70.0070.03711.10
5.2.60.0000.04711.06
5.2.50.0030.04010.93
5.2.40.0130.04710.91
5.2.30.0000.05710.89
5.2.20.0030.04010.72
5.2.10.0030.03710.94
5.2.00.0030.04010.87
5.1.60.0130.02710.06
5.1.50.0000.0379.92
5.1.40.0030.0339.83
5.1.30.0030.03710.25
5.1.20.0070.03310.36
5.1.10.0000.03710.15
5.1.00.0130.0279.92
5.0.50.0000.0338.44
5.0.40.0070.0238.29
5.0.30.0000.0578.15
5.0.20.0030.0408.18
5.0.10.0100.0208.21
5.0.00.0030.0408.16
4.4.90.0000.0275.77
4.4.80.0070.0175.76
4.4.70.0100.0135.74
4.4.60.0000.0235.75
4.4.50.0000.0235.91
4.4.40.0000.0335.76
4.4.30.0030.0235.84
4.4.20.0000.0235.96
4.4.10.0030.0205.88
4.4.00.0000.0335.93
4.3.110.0030.0235.68
4.3.100.0000.0235.67
4.3.90.0000.0205.65
4.3.80.0030.0305.71
4.3.70.0000.0205.68
4.3.60.0000.0205.70
4.3.50.0000.0235.65
4.3.40.0000.0335.63
4.3.30.0030.0204.43
4.3.20.0000.0234.41
4.3.10.0030.0234.39
4.3.00.0130.0206.73

preferences:
49.33 ms | 401 KiB | 5 Q