3v4l.org

run code in 300+ PHP versions simultaneously
<?php class C { public int $value; } $c = new C(); var_dump(isset($c->value)); // false $c->value = 5; var_dump($c->value); //5 unset($c->value); //var_dump($c->value); //Error: Typed property C::$value must not be accessed before initialization var_dump(isset($c->value)); // false $c->value = 5; $c->value = null; //error

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)
8.3.60.0150.00618.31
8.3.50.0140.00318.38
8.3.40.0060.00918.96
8.3.30.0090.00618.84
8.3.20.0000.00824.18
8.3.10.0050.00324.66
8.3.00.0080.00026.16
8.2.180.0120.00325.92
8.2.170.0150.00622.96
8.2.160.0120.00322.96
8.2.150.0040.00425.66
8.2.140.0070.00024.66
8.2.130.0050.00326.16
8.2.120.0040.00421.06
8.2.110.0040.00422.10
8.2.100.0040.00817.91
8.2.90.0040.00417.84
8.2.80.0000.00819.23
8.2.70.0040.00417.63
8.2.60.0030.00717.92
8.2.50.0030.00617.98
8.2.40.0080.00019.75
8.2.30.0040.00417.82
8.2.20.0040.00420.49
8.2.10.0000.00717.68
8.2.00.0000.00719.30
8.1.280.0040.01125.92
8.1.270.0060.00323.99
8.1.260.0050.00326.35
8.1.250.0000.00728.09
8.1.240.0090.00022.13
8.1.230.0040.00720.90
8.1.220.0030.00617.74
8.1.210.0080.00018.77
8.1.200.0000.00917.22
8.1.190.0040.00417.23
8.1.180.0060.00318.10
8.1.170.0000.00717.65
8.1.160.0060.00318.85
8.1.150.0000.00818.65
8.1.140.0080.00017.45
8.1.130.0000.00819.16
8.1.120.0000.00817.32
8.1.110.0040.00417.36
8.1.100.0000.00817.36
8.1.90.0000.00817.39
8.1.80.0040.00417.40
8.1.70.0000.00717.39
8.1.60.0060.00317.54
8.1.50.0000.00717.57
8.1.40.0000.01217.56
8.1.30.0050.00317.52
8.1.20.0170.00717.48
8.1.10.0140.01117.36
8.1.00.0170.00717.43
8.0.300.0000.00720.04
8.0.290.0000.00816.75
8.0.280.0050.00218.41
8.0.270.0030.00316.82
8.0.260.0070.00016.82
8.0.250.0000.00717.00
8.0.240.0070.00016.86
8.0.230.0040.00416.84
8.0.220.0040.00416.89
8.0.210.0080.00016.84
8.0.200.0000.00616.94
8.0.190.0050.00316.88
8.0.180.0000.00717.00
8.0.170.0000.00916.93
8.0.160.0000.00716.82
8.0.150.0140.00616.70
8.0.140.0150.00416.79
8.0.130.0170.00316.81
8.0.120.0190.00016.86
8.0.110.0200.00016.73
8.0.100.0120.00916.66
8.0.90.0180.00316.89
8.0.80.0250.00016.92
8.0.70.0190.00416.73
8.0.60.0150.00616.83
8.0.50.0150.00516.85
8.0.30.0210.00316.97
8.0.20.0200.00816.90
8.0.10.0070.01416.95
7.4.330.0000.00515.55
7.4.320.0030.00316.46
7.4.300.0000.00616.42
7.4.290.0000.00816.38
7.4.280.0040.00416.50
7.4.270.0120.00916.47
7.4.260.0230.00016.55
7.4.250.0180.00516.38
7.4.240.0190.00416.54
7.4.230.0200.00316.46
7.4.220.0130.00716.60
7.4.210.0110.00816.32
7.4.200.0100.01016.53
7.4.190.0180.00316.64
7.4.180.0160.00416.50
7.4.160.0100.01016.50
7.4.150.0200.00016.34
7.4.140.0160.00316.41
7.4.130.0110.00716.33
7.4.120.0170.00316.42
7.4.110.0170.00316.33
7.4.100.0130.00616.59
7.4.90.0140.00516.32
7.4.80.0170.00316.42
7.4.70.0170.00316.30
7.4.60.0140.00416.36
7.4.50.0190.00416.37
7.4.40.0170.00316.32
7.4.30.0140.00516.37
7.4.20.0160.00416.50
7.4.10.0150.00416.32
7.4.00.0120.00716.46

preferences:
59.41 ms | 400 KiB | 5 Q