3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { public $b; }; $a = new A; $rp = new ReflectionProperty($a, "b"); var_dump($rp->isInitialized($a)); $a->b; // Remains silent unset($a->b); var_dump($rp->isInitialized($a)); $a->b; // Cause a "Notice: Undefined property A::$b"

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)
8.3.70.0120.00316.75
8.3.60.0040.01518.27
8.3.50.0070.00717.95
8.3.40.0040.01118.59
8.3.30.0040.01118.39
8.3.20.0040.00424.18
8.3.10.0000.00924.66
8.3.00.0150.00326.16
8.2.190.0070.00716.75
8.2.180.0090.00625.92
8.2.170.0110.00818.96
8.2.160.0040.01122.96
8.2.150.0030.00625.66
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0040.00426.16
8.2.110.0050.00521.18
8.2.100.0080.00417.80
8.2.90.0030.00519.07
8.2.80.0030.00517.97
8.2.70.0000.00917.38
8.2.60.0000.00818.04
8.2.50.0000.00918.07
8.2.40.0000.00818.16
8.2.30.0040.00417.70
8.2.20.0070.00019.39
8.2.10.0000.00717.62
8.2.00.0000.00719.16
8.1.280.0110.00425.92
8.1.270.0040.00423.99
8.1.260.0080.00026.35
8.1.250.0050.00328.09
8.1.240.0000.00922.17
8.1.230.0060.00619.10
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0060.00317.23
8.1.190.0030.00517.10
8.1.180.0000.00818.10
8.1.170.0080.00018.43
8.1.160.0000.00719.00
8.1.150.0040.00418.61
8.1.140.0070.00017.22
8.1.130.0080.00017.38
8.1.120.0000.00717.41
8.1.110.0030.00617.39
8.1.100.0070.00317.35
8.1.90.0050.00317.40
8.1.80.0040.00417.39
8.1.70.0000.00717.40
8.1.60.0040.00417.38
8.1.50.0040.00417.30
8.1.40.0020.00517.49
8.1.30.0030.00617.64
8.1.20.0000.00817.60
8.1.10.0040.00417.45
8.1.00.0040.00417.39
8.0.300.0040.00418.77
8.0.290.0000.00716.75
8.0.280.0070.00018.29
8.0.270.0000.00716.77
8.0.260.0000.00716.69
8.0.250.0060.00016.93
8.0.240.0000.00716.89
8.0.230.0000.00716.88
8.0.220.0030.00316.87
8.0.210.0000.00816.88
8.0.200.0050.00316.85
8.0.190.0040.00416.99
8.0.180.0000.00716.89
8.0.170.0030.00616.86
8.0.160.0080.00016.86
8.0.150.0030.00516.81
8.0.140.0040.00416.75
8.0.130.0110.00016.80
8.0.120.0120.00816.79
8.0.110.0190.00016.88
8.0.100.0150.00616.83
8.0.90.0140.00716.73
8.0.80.0130.01016.78
8.0.70.0100.01116.67
8.0.60.0130.00616.71
8.0.50.0140.00616.83
8.0.30.0100.01016.86
8.0.20.0120.00816.82
8.0.10.0170.00316.99
8.0.00.0040.00417.00
7.4.330.0050.00015.55
7.4.320.0030.00316.44
7.4.300.0030.00316.41
7.4.290.0080.00016.45
7.4.280.0060.00316.53
7.4.270.0030.00516.52
7.4.260.0040.00416.41
7.4.250.0140.00916.50
7.4.240.0180.00416.45
7.4.230.0190.00316.32
7.4.220.0120.00616.41
7.4.210.0150.00316.42
7.4.200.0120.00616.39
7.4.190.0090.00916.44
7.4.180.0160.00216.39
7.4.160.0180.00016.48
7.4.150.0150.00316.30
7.4.140.0160.00316.44
7.4.130.0170.00316.36
7.4.120.0100.01016.36
7.4.110.0160.00316.19
7.4.100.0130.00616.43
7.4.90.0160.00416.25
7.4.80.0180.00216.43
7.4.70.0130.00516.25
7.4.60.0140.00516.20
7.4.50.0120.00616.21
7.4.40.0110.00716.31
7.4.30.0150.00416.39
7.4.20.0130.00416.37
7.4.10.0170.00016.22
7.4.00.0080.01216.21
7.3.330.0150.00716.30
7.3.320.0040.00816.29
7.3.310.0020.00716.23
7.3.300.0140.00516.10
7.3.290.0190.00216.32
7.3.280.0160.00316.30
7.3.270.0130.00616.39
7.3.260.0150.00316.08
7.3.250.0170.00316.13
7.3.240.0110.01116.33
7.3.230.0090.00616.13
7.3.220.0100.01016.31
7.3.210.0090.00516.25
7.3.200.0000.01316.37
7.3.190.0140.00616.07
7.3.180.0190.00316.17
7.3.170.0170.00416.22
7.3.160.0160.00416.19
7.3.150.0120.00516.00
7.3.140.0110.00316.28
7.3.130.0100.00316.23
7.3.120.0080.00816.07
7.3.110.0180.00015.92
7.3.100.0100.00716.14
7.3.90.0130.00016.23
7.3.80.0130.00516.07
7.3.70.0120.00616.22
7.3.60.0170.00016.22
7.3.50.0150.00416.20
7.3.40.0030.01116.16
7.3.30.0060.00616.11
7.3.20.0090.00617.98
7.3.10.0150.00818.13
7.3.00.0120.00417.90

preferences:
45.1 ms | 401 KiB | 5 Q