3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { private $_b; function __construc($b) { $this->_b = $b; } function __get($name) { echo "get $name \n"; return $this->{'_' . $name}; } function __isset($name) { echo "isset $name\n"; return true; } } class B { private $_c; function __construc($c) { $this->_c = $c; } function __get($name) { echo "get $name \n"; return $this->{'_' . $name}; } function __isset($name) { echo "isset $name\n"; return true; } } $c = new B('plop'); $b = new B($c); $a = new A($b); var_dump($a); var_dump(isset($a->b->c));

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)
8.3.60.0110.00818.40
8.3.50.0100.01017.93
8.3.40.0120.00318.59
8.3.30.0140.00018.77
8.3.20.0090.00619.18
8.3.10.0050.00323.67
8.3.00.0040.00420.61
8.2.180.0130.00618.16
8.2.170.0090.00622.96
8.2.160.0030.01022.16
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0040.00419.64
8.2.120.0080.00026.35
8.2.110.0110.00722.13
8.2.100.0070.00417.78
8.2.90.0000.00817.75
8.2.80.0050.00519.23
8.2.70.0060.00317.80
8.2.60.0000.00918.22
8.2.50.0000.01018.10
8.2.40.0000.00719.47
8.2.30.0040.00419.22
8.2.20.0030.00518.14
8.2.10.0050.00318.14
8.2.00.0030.00517.50
8.1.280.0040.01125.92
8.1.270.0040.00423.99
8.1.260.0090.00026.35
8.1.250.0100.00328.09
8.1.240.0100.00020.44
8.1.230.0090.00319.01
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0000.00817.35
8.1.190.0070.00417.13
8.1.180.0050.00318.10
8.1.170.0030.00618.59
8.1.160.0030.00518.98
8.1.150.0080.00018.84
8.1.140.0000.00722.11
8.1.130.0030.00320.25
8.1.120.0000.00717.35
8.1.110.0040.00417.42
8.1.100.0060.00317.51
8.1.90.0000.00817.52
8.1.80.0030.00517.50
8.1.70.0050.00217.37
8.1.60.0030.00717.63
8.1.50.0000.00817.46
8.1.40.0040.00417.44
8.1.30.0060.00317.70
8.1.20.0040.00417.51
8.1.10.0040.00417.67
8.1.00.0000.00717.59
8.0.300.0000.00718.77
8.0.290.0000.01016.63
8.0.280.0050.00218.48
8.0.270.0070.00017.29
8.0.260.0030.00318.52
8.0.250.0030.00317.00
8.0.240.0000.00716.99
8.0.230.0000.00716.96
8.0.220.0030.00316.86
8.0.210.0000.00716.93
8.0.200.0000.00616.95
8.0.190.0030.00617.04
8.0.180.0000.00816.95
8.0.170.0060.00316.83
8.0.160.0040.00416.88
8.0.150.0040.00416.87
8.0.140.0070.00016.89
8.0.130.0000.00513.33
8.0.120.0050.00316.88
8.0.110.0030.00316.73
8.0.100.0040.00416.98
8.0.90.0060.00316.88
8.0.80.0070.00816.84
8.0.70.0030.00516.94
8.0.60.0070.00016.96
8.0.50.0000.00816.96
8.0.30.0120.00717.22
8.0.20.0130.00617.40
8.0.10.0000.00717.09
8.0.00.0040.01516.80
7.4.330.0050.00015.55
7.4.320.0060.00016.64
7.4.300.0040.00416.63
7.4.290.0030.00316.63
7.4.280.0000.00816.55
7.4.270.0030.00316.44
7.4.260.0080.00016.61
7.4.250.0040.00416.49
7.4.240.0000.00816.62
7.4.230.0040.00416.45
7.4.220.0000.00816.70
7.4.210.0120.00416.65
7.4.200.0070.00016.42
7.4.160.0120.00616.42
7.4.140.0060.01117.86
7.4.130.0110.00616.57
7.4.120.0100.00716.51
7.4.110.0070.01016.55
7.4.100.0150.00416.51
7.4.90.0160.00716.63
7.4.80.0160.00619.39
7.4.70.0030.01416.41
7.4.60.0090.00916.57
7.4.50.0000.01516.36
7.4.40.0150.00616.59
7.4.00.0120.00614.92
7.3.330.0060.00013.28
7.3.320.0000.00613.18
7.3.310.0030.00616.37
7.3.300.0040.00416.29
7.3.290.0030.00316.25
7.3.280.0120.00416.29
7.3.260.0110.00616.52
7.3.240.0080.00916.41
7.3.230.0040.01616.45
7.3.210.0030.01316.53
7.3.200.0180.00316.38
7.3.190.0060.01216.33
7.3.180.0060.01016.29
7.3.170.0120.00916.48
7.3.160.0130.00316.42
7.3.10.0040.00816.43
7.3.00.0030.00616.70
7.2.330.0180.00016.67
7.2.320.0060.01216.34
7.2.310.0120.00616.65
7.2.300.0070.01016.51
7.2.290.0040.01416.53
7.2.130.0030.00916.88
7.2.120.0080.00316.86
7.2.110.0190.00215.91
7.2.100.0450.00315.86
7.2.90.0240.00715.94
7.2.80.0150.00416.02
7.2.70.0080.00715.70
7.2.60.0080.00615.98
7.2.50.0120.00615.93
7.2.40.0110.00616.07
7.2.30.0090.00615.93
7.2.20.0360.00615.98
7.2.10.0070.00915.81
7.2.00.0480.00215.95
7.1.250.0030.00915.88
7.1.230.0100.00614.06
7.1.220.0060.00913.76
7.1.210.0150.00013.86
7.1.200.0220.00913.78
7.1.190.0070.00713.56
7.1.180.0640.00013.92
7.1.170.0170.01313.80
7.1.160.0060.01013.73
7.1.150.0120.00513.96
7.1.140.0120.01013.91
7.1.130.2230.00313.53
7.1.120.0730.00413.93
7.1.110.1090.01313.88
7.1.100.0080.00813.93
7.1.90.0120.00313.95
7.1.80.0030.01413.39
7.1.70.0060.00913.80
7.1.60.0280.01731.82
7.1.50.0300.01131.69
7.1.40.2350.00731.75
7.1.30.0910.01531.67
7.1.20.0360.01031.75
7.1.10.1190.00613.80
7.1.00.1400.00713.64
5.6.380.0040.01214.06

preferences:
54.49 ms | 400 KiB | 5 Q