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(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)
8.3.70.0060.01216.75
8.3.60.0100.01318.25
8.3.50.0120.00318.24
8.3.40.0110.00418.78
8.3.30.0110.00718.63
8.3.20.0120.00919.21
8.3.10.0000.00823.70
8.3.00.0040.00420.75
8.2.180.0100.01018.29
8.2.170.0080.00622.96
8.2.160.0000.01322.12
8.2.150.0080.00024.18
8.2.140.0070.00024.66
8.2.130.0050.00319.70
8.2.120.0070.00026.35
8.2.110.0060.00322.18
8.2.100.0040.00819.45
8.2.90.0080.00017.75
8.2.80.0030.00717.97
8.2.70.0040.00417.78
8.2.60.0080.00018.22
8.2.50.0030.00818.10
8.2.40.0040.00419.50
8.2.30.0000.00719.14
8.2.20.0030.00518.06
8.2.10.0000.00718.07
8.2.00.0090.00017.71
8.1.280.0100.00625.92
8.1.270.0060.00319.00
8.1.260.0040.00726.35
8.1.250.0040.00428.09
8.1.240.0060.00324.03
8.1.230.0040.00719.07
8.1.220.0030.00517.74
8.1.210.0060.00318.77
8.1.200.0040.00417.35
8.1.190.0060.00317.35
8.1.180.0000.00818.10
8.1.170.0080.00018.70
8.1.160.0000.00718.82
8.1.150.0000.00718.92
8.1.140.0040.00422.20
8.1.130.0030.00320.22
8.1.120.0000.00717.46
8.1.110.0020.00517.51
8.1.100.0000.00817.39
8.1.90.0000.00717.50
8.1.80.0040.00417.38
8.1.70.0040.00417.47
8.1.60.0030.00717.57
8.1.50.0000.00817.56
8.1.40.0040.00417.46
8.1.30.0030.00917.57
8.1.20.0070.00017.67
8.1.10.0000.00717.50
8.1.00.0000.00717.39
8.0.300.0040.00419.64
8.0.290.0000.00816.61
8.0.280.0070.00018.41
8.0.270.0070.00017.20
8.0.260.0000.00718.53
8.0.250.0040.00416.94
8.0.240.0030.00316.88
8.0.230.0000.00816.88
8.0.220.0030.00316.81
8.0.210.0070.00016.84
8.0.200.0060.00316.90
8.0.190.0080.00417.03
8.0.180.0030.00616.84
8.0.170.0040.00416.96
8.0.160.0000.00716.93
8.0.150.0000.00716.74
8.0.140.0000.00716.83
8.0.130.0000.00513.33
8.0.120.0000.00816.78
8.0.110.0020.00516.98
8.0.100.0020.00516.97
8.0.90.0040.00416.90
8.0.80.0050.01516.89
8.0.70.0000.00816.78
8.0.60.0080.00016.86
8.0.50.0080.00016.91
8.0.30.0110.00717.03
8.0.20.0100.01317.40
8.0.10.0070.00017.01
8.0.00.0110.01116.83
7.4.330.0050.00015.55
7.4.320.0030.00316.71
7.4.300.0000.00716.62
7.4.290.0030.00316.54
7.4.280.0050.00316.55
7.4.270.0030.00316.52
7.4.260.0000.01016.55
7.4.250.0000.00716.59
7.4.240.0030.00316.59
7.4.230.0000.00816.55
7.4.220.0040.00416.52
7.4.210.0070.00816.54
7.4.200.0000.00716.73
7.4.160.0090.00916.47
7.4.140.0110.00817.86
7.4.130.0120.00616.52
7.4.120.0100.00816.50
7.4.110.0140.00316.54
7.4.100.0120.00916.44
7.4.90.0040.01216.62
7.4.80.0120.00619.39
7.4.70.0080.00816.47
7.4.60.0150.00816.64
7.4.50.0070.01016.55
7.4.40.0060.01216.45
7.4.00.0080.01114.76
7.3.330.0060.00013.27
7.3.320.0050.00013.29
7.3.310.0060.00316.25
7.3.300.0000.00716.17
7.3.290.0030.00316.19
7.3.280.0060.01016.31
7.3.260.0110.00716.46
7.3.240.0090.00716.33
7.3.230.0080.00816.34
7.3.210.0090.01316.34
7.3.200.0060.01016.31
7.3.190.0060.01216.38
7.3.180.0090.00616.34
7.3.170.0090.00916.27
7.3.160.0110.00616.40
7.3.120.0030.01414.69
7.3.110.0100.00614.49
7.3.100.0110.00414.79
7.3.90.0030.01014.85
7.3.80.0070.00714.46
7.3.70.0040.00414.52
7.3.60.0110.00314.75
7.3.50.0090.00614.81
7.3.40.0000.01414.66
7.3.30.0040.01114.70
7.3.20.0060.00616.70
7.3.10.0070.00716.70
7.3.00.0030.01016.82
7.2.330.0090.00916.63
7.2.320.0070.01716.84
7.2.310.0130.00416.83
7.2.300.0090.01216.69
7.2.290.0030.02016.41
7.2.250.0050.01215.21
7.2.240.0000.01915.26
7.2.230.0030.00914.54
7.2.220.0090.00615.04
7.2.210.0090.00615.22
7.2.200.0070.00714.96
7.2.190.0060.00614.94
7.2.180.0040.01115.02
7.2.170.0000.01315.17
7.2.110.0150.00414.23
7.2.100.1760.01314.52
7.2.90.1080.00014.43
7.2.80.0350.01014.72
7.2.70.0930.00314.84
7.2.60.0730.01314.84
7.2.50.0970.01314.72
7.2.40.0750.01414.97
7.2.30.0440.00714.63
7.2.20.0270.00314.91
7.2.10.0280.01214.47
7.2.00.0780.00614.94
7.1.330.0030.01015.70
7.1.320.0030.01015.72
7.1.310.0000.01415.89
7.1.300.0030.01015.75
7.1.290.0030.00815.89
7.1.280.0000.01015.78
7.1.270.0000.01415.55
7.1.260.0030.01015.66
7.1.230.1070.00613.89
7.1.220.0840.01313.62
7.1.210.0800.01013.72
7.1.200.0400.00713.87
7.1.190.0760.01013.83
7.1.180.0870.01313.97
7.1.170.0730.00613.84
7.1.160.1330.00313.66
7.1.150.0710.00713.98
7.1.140.0200.00313.86
7.1.130.0320.01013.80
7.1.120.0820.00413.78
7.1.110.0760.01113.46
7.1.100.0750.00313.84
7.1.90.0850.00714.00
7.1.80.0710.00713.55
7.1.70.0710.00313.76
7.1.60.0900.01431.84
7.1.50.0980.00031.58
7.1.40.1980.01031.50
7.1.30.1520.01631.72
7.1.20.1320.01031.59
7.1.10.1190.01013.79
7.1.00.1090.01013.81
5.6.380.0120.00613.70

preferences:
38.14 ms | 401 KiB | 5 Q