3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A {public $a;} $a = new A; echo intval(is_null($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)
8.3.60.0170.00318.43
8.3.50.0150.00316.11
8.3.40.0120.00318.71
8.3.30.0110.00418.57
8.3.20.0090.00020.23
8.3.10.0060.00323.48
8.3.00.0040.00423.65
8.2.180.0100.01016.63
8.2.170.0040.01122.96
8.2.160.0040.01122.31
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0000.00826.16
8.2.120.0060.00317.63
8.2.110.0060.00322.01
8.2.100.0060.00617.63
8.2.90.0000.00819.21
8.2.80.0000.00817.97
8.2.70.0030.00617.38
8.2.60.0000.00817.91
8.2.50.0000.00818.07
8.2.40.0060.00321.07
8.2.30.0030.00619.72
8.2.20.0040.00417.68
8.2.10.0000.00818.10
8.2.00.0000.00718.05
8.1.280.0100.01025.92
8.1.270.0000.00920.36
8.1.260.0040.00426.35
8.1.250.0050.00328.09
8.1.240.0060.00322.02
8.1.230.0080.00417.42
8.1.220.0030.00617.74
8.1.210.0040.00418.77
8.1.200.0030.00617.35
8.1.190.0000.00817.36
8.1.180.0030.00618.10
8.1.170.0060.00318.36
8.1.160.0040.00421.91
8.1.150.0050.00218.88
8.1.140.0000.00717.50
8.1.130.0030.00317.57
8.1.120.0000.00817.35
8.1.110.0020.00517.47
8.1.100.0030.00417.45
8.1.90.0000.00717.41
8.1.80.0030.00517.38
8.1.70.0070.00017.46
8.1.60.0080.00017.47
8.1.50.0000.00817.55
8.1.40.0050.00217.45
8.1.30.0040.00417.69
8.1.20.0000.00817.69
8.1.10.0040.00417.46
8.1.00.0000.00717.51
8.0.300.0040.00418.77
8.0.290.0080.00016.75
8.0.280.0070.00018.42
8.0.270.0000.00817.29
8.0.260.0030.00317.25
8.0.250.0000.00717.02
8.0.240.0030.00317.07
8.0.230.0030.00316.90
8.0.220.0030.00316.95
8.0.210.0000.00716.88
8.0.200.0050.00316.95
8.0.190.0030.00516.92
8.0.180.0000.00717.02
8.0.170.0050.00316.89
8.0.160.0000.00717.00
8.0.150.0070.00016.98
8.0.140.0030.00316.80
8.0.130.0060.00013.29
8.0.120.0080.00016.94
8.0.110.0000.00816.79
8.0.100.0000.00716.97
8.0.90.0040.00417.01
8.0.80.0030.01216.94
8.0.70.0000.00716.97
8.0.60.0040.00417.02
8.0.50.0040.00416.77
8.0.30.0100.00917.06
8.0.20.0080.01117.40
8.0.10.0040.00417.07
8.0.00.0070.01116.75
7.4.330.0000.00515.20
7.4.320.0000.00716.52
7.4.300.0000.00616.45
7.4.290.0030.00316.50
7.4.280.0000.00816.50
7.4.270.0000.00716.48
7.4.260.0000.00716.55
7.4.250.0040.00416.60
7.4.240.0030.00416.60
7.4.230.0070.00016.34
7.4.220.0090.00916.67
7.4.210.0000.01316.59
7.4.200.0000.00716.34
7.4.160.0130.00316.47
7.4.150.0070.01317.40
7.4.140.0130.00817.86
7.4.130.0130.00616.44
7.4.120.0080.01016.58
7.4.110.0180.00316.47
7.4.100.0100.00716.47
7.4.90.0090.00916.61
7.4.80.0090.00919.39
7.4.70.0070.01016.46
7.4.60.0090.00916.49
7.4.50.0030.00316.35
7.4.40.0070.01116.30
7.4.30.0090.01016.63
7.4.00.0030.01315.08
7.3.330.0030.00313.25
7.3.320.0000.00513.17
7.3.310.0000.00916.20
7.3.300.0000.00716.35
7.3.290.0090.00816.28
7.3.280.0090.00916.27
7.3.270.0140.00317.40
7.3.260.0140.00416.21
7.3.250.0050.01216.26
7.3.240.0060.01016.33
7.3.230.0130.00316.39
7.3.210.0100.00616.27
7.3.200.0100.01116.60
7.3.190.0070.01416.59
7.3.180.0060.00916.38
7.3.170.0030.01416.31
7.3.160.0120.00616.55
7.2.330.0000.01716.55
7.2.320.0140.00516.57
7.2.310.0060.01516.38
7.2.300.0100.00716.66
7.2.290.0190.00316.48
7.2.60.0070.00716.96
7.2.00.0030.01019.36
7.1.200.0080.00615.72
7.1.100.0060.01017.87
7.1.70.0030.00517.03
7.1.60.0090.01519.12
7.1.50.0130.01016.79
7.1.00.0030.07322.35
7.0.200.0250.00616.42
7.0.60.0070.07021.83
7.0.50.0100.04017.84
7.0.40.0070.06720.09
7.0.30.0230.04020.06
7.0.20.0330.08020.21
7.0.10.0030.04320.08
7.0.00.0000.08320.19
5.6.280.0030.07321.13
5.6.210.0070.08020.45
5.6.200.0070.06018.19
5.6.190.0030.06320.58
5.6.180.0370.04320.47
5.6.170.0270.04320.34
5.6.160.0170.07320.43
5.6.150.0100.07718.19
5.6.140.0070.05018.18
5.6.130.0070.08018.18
5.6.120.0170.06021.07
5.6.110.0030.06020.98
5.6.100.0070.05020.89
5.6.90.0030.04320.94
5.6.80.0030.08320.37
5.5.350.4170.04320.34
5.5.340.0100.04318.08
5.5.330.0100.08020.30
5.5.320.0300.07320.37
5.5.310.0170.08020.34
5.5.300.0070.08018.07
5.5.290.0070.08017.98
5.5.280.0070.07720.88
5.5.270.0130.07720.88
5.5.260.0100.07720.96
5.5.250.0070.08020.69
5.5.240.0000.03320.25
5.4.450.4300.03319.55
5.4.440.4170.03319.55
5.4.430.4700.03319.53
5.4.420.4270.03319.39
5.4.410.4670.03019.24
5.4.400.4530.03719.18
5.4.390.1030.04019.15
5.4.380.0130.06719.13
5.4.370.4230.04019.22
5.4.360.3800.03319.04
5.4.350.3870.05019.26
5.4.340.4000.03719.23
5.4.320.3870.03319.23
5.4.310.3930.04019.23
5.4.300.3970.03319.22
5.4.290.4070.03719.12
5.4.280.4130.03718.93
5.4.270.4570.03319.12
5.4.260.4830.03719.15
5.4.250.3600.03718.97
5.4.240.4100.03019.15
5.4.230.3900.03319.22
5.4.220.4730.03719.14
5.4.210.4670.03319.05
5.4.200.4700.03318.94
5.4.190.4630.03719.21
5.4.180.3270.04019.14
5.4.170.3570.03719.16
5.4.160.3570.03718.92
5.4.150.4200.04019.20
5.4.140.3800.03316.48
5.4.130.3770.03016.47
5.4.120.3430.03716.44
5.4.110.3870.03016.48
5.4.100.3700.03316.48
5.4.90.3930.03016.52
5.4.80.4130.04016.42
5.4.70.4070.03716.52
5.4.60.4570.04016.53
5.4.50.3930.03316.20
5.4.40.4200.03716.23
5.4.30.3900.03716.45
5.4.20.3830.03716.61
5.4.10.3800.03316.29
5.4.00.4530.03015.93
5.3.290.3970.03714.70
5.3.280.4300.04014.52
5.3.270.3730.03714.64
5.3.260.3600.03014.65
5.3.250.3670.03714.59
5.3.240.3670.03314.61
5.3.230.3630.03714.62
5.3.220.3370.03314.59
5.3.210.4600.03314.61
5.3.200.3570.03314.61
5.3.190.3730.03314.56
5.3.180.4170.04014.53
5.3.170.3970.04014.70
5.3.160.3900.03714.73
5.3.150.3930.03014.44
5.3.140.3830.02714.57
5.3.130.3700.02714.61
5.3.120.3870.04014.60
5.3.110.3770.03714.57
5.3.100.4170.03314.17
5.3.90.4600.03714.02
5.3.80.4630.03314.01
5.3.70.4730.03014.04
5.3.60.4200.04013.96
5.3.50.4600.03713.94
5.3.40.4500.03714.09
5.3.30.4330.03013.96
5.3.20.4230.04013.83
5.3.10.4670.03013.60
5.3.00.4600.03713.68
5.2.170.4030.03711.20
5.2.160.3830.03311.14
5.2.150.3930.02711.14
5.2.140.3200.03011.06
5.2.130.3900.03011.15
5.2.120.3770.03011.07
5.2.110.3830.02711.10
5.2.100.3930.03011.09
5.2.90.3600.03011.16
5.2.80.3600.03011.09
5.2.70.3200.02711.03
5.2.60.3400.03011.04
5.2.50.3630.03011.05
5.2.40.3200.02010.99
5.2.30.3130.02711.00
5.2.20.3200.03010.96
5.2.10.2630.02710.82
5.2.00.3000.02710.77
5.1.60.2800.0239.98
5.1.50.3270.02310.01
5.1.40.0030.03310.03
5.1.30.0030.05710.29
5.1.20.0000.05310.31
5.1.10.0000.03010.21
5.1.00.2630.02710.06
5.0.50.1800.0208.55
5.0.40.1870.0208.47
5.0.30.1770.0308.18
5.0.20.1800.0208.34
5.0.10.1500.0208.18
5.0.00.1830.0308.22
4.4.90.1600.0206.29
4.4.80.1570.0206.29
4.4.70.1600.0206.29
4.4.60.1800.0176.29
4.4.50.1770.0176.29
4.4.40.1670.0236.29
4.4.30.0030.0306.29
4.4.20.0030.0306.29
4.4.10.1800.0176.29
4.4.00.1930.0236.29
4.3.110.1670.0176.29
4.3.100.1430.0176.29
4.3.90.1600.0136.29
4.3.80.1570.0236.29
4.3.70.1600.0106.29
4.3.60.1800.0176.29
4.3.50.1530.0136.29
4.3.40.1730.0236.29
4.3.30.1030.0236.29
4.3.20.1030.0206.29
4.3.10.1030.0236.29
4.3.00.1000.0136.29

preferences:
42.81 ms | 400 KiB | 5 Q