3v4l.org

run code in 300+ PHP versions simultaneously
<?php $c = new c(); var_dump(isset($c->a)); // no problem var_dump(isset($c->a->b)); // undefined index: a var_dump(isset($c->b->c)); // undefined index: b var_dump(isset($c->d['e'])); // undefined index: d class c { public $x = array(); public function __get($name) { return $this->__isset($name) ? $this->x[$name] : null; } public function __isset($name) { return isset($this->x[$name]); } } ?>

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)
8.3.60.0040.01116.63
8.3.50.0060.01216.48
8.3.40.0040.01118.79
8.3.30.0130.00418.71
8.3.20.0000.00818.83
8.3.10.0080.00020.40
8.3.00.0040.00419.25
8.2.180.0140.00716.75
8.2.170.0080.00822.96
8.2.160.0100.00320.58
8.2.150.0060.00324.18
8.2.140.0040.00424.66
8.2.130.0070.00726.16
8.2.120.0080.00020.90
8.2.110.0030.00620.96
8.2.100.0040.00817.78
8.2.90.0000.00919.16
8.2.80.0060.00319.34
8.2.70.0000.00817.38
8.2.60.0040.00417.80
8.2.50.0040.00418.07
8.2.40.0000.01118.22
8.2.30.0100.00018.04
8.2.20.0000.00717.64
8.2.10.0040.00417.59
8.2.00.0040.00417.67
8.1.280.0090.00625.92
8.1.270.0000.00724.66
8.1.260.0050.00326.35
8.1.250.0070.00028.09
8.1.240.0080.00322.07
8.1.230.0120.00020.97
8.1.220.0060.00317.74
8.1.210.0070.00318.88
8.1.200.0030.00617.22
8.1.190.0000.00717.51
8.1.180.0080.00018.10
8.1.170.0040.00418.82
8.1.160.0000.00718.84
8.1.150.0070.00018.57
8.1.140.0040.00417.30
8.1.130.0000.00717.79
8.1.120.0000.00917.37
8.1.110.0040.00417.41
8.1.100.0040.00417.44
8.1.90.0000.00717.39
8.1.80.0030.00417.48
8.1.70.0050.00317.32
8.1.60.0080.00017.46
8.1.50.0040.00417.49
8.1.40.0000.00717.47
8.1.30.0000.00817.64
8.1.20.0030.00517.64
8.1.10.0050.00217.56
8.1.00.0000.00817.51
8.0.300.0030.00619.91
8.0.290.0040.00416.75
8.0.280.0070.00018.37
8.0.270.0070.00017.20
8.0.260.0030.00316.71
8.0.250.0050.00216.79
8.0.240.0050.00316.79
8.0.230.0000.00716.91
8.0.220.0000.00716.82
8.0.210.0040.00416.73
8.0.200.0070.00416.88
8.0.190.0000.00816.86
8.0.180.0030.00316.77
8.0.170.0060.00316.73
8.0.160.0080.00016.88
8.0.150.0050.00316.63
8.0.140.0040.00416.84
8.0.130.0050.00013.34
8.0.120.0040.00416.79
8.0.110.0040.00416.68
8.0.100.0030.00316.86
8.0.90.0030.00516.88
8.0.80.0110.00416.82
8.0.70.0060.00316.69
8.0.60.0000.00716.69
8.0.50.0000.00716.63
8.0.30.0090.01017.23
8.0.20.0130.00717.29
8.0.10.0000.00716.94
8.0.00.0150.01016.75
7.4.330.0020.00212.98
7.4.320.0000.00616.66
7.4.300.0070.00016.55
7.4.290.0030.00316.50
7.4.280.0000.00716.65
7.4.270.0040.00416.48
7.4.260.0000.00716.46
7.4.250.0000.00816.48
7.4.240.0040.00316.53
7.4.230.0000.00716.50
7.4.220.0090.00916.57
7.4.210.0080.00716.59
7.4.200.0000.00716.71
7.4.190.0040.00416.41
7.4.160.0140.00716.50
7.4.150.0110.00616.42
7.4.140.0170.00216.50
7.4.130.0110.01116.53
7.4.120.0110.01016.47
7.4.110.0080.00816.43
7.4.100.0110.00916.52
7.4.90.0160.00316.62
7.4.80.0110.00819.39
7.4.70.0190.00016.60
7.4.60.0060.00916.63
7.4.50.0050.00516.41
7.4.40.0090.00616.38
7.4.30.0130.00316.40
7.4.00.0070.01014.85
7.3.330.0030.00313.25
7.3.320.0000.00513.08
7.3.310.0040.00416.25
7.3.300.0030.00316.24
7.3.290.0130.00316.33
7.3.280.0040.01216.22
7.3.270.0150.00316.44
7.3.260.0090.00916.47
7.3.250.0110.00816.38
7.3.240.0050.01516.35
7.3.230.0030.01216.33
7.3.210.0100.01016.31
7.3.200.0060.01116.21
7.3.190.0120.00416.48
7.3.180.0160.00016.35
7.3.170.0040.01216.15
7.3.160.0230.00016.48
7.3.120.0090.00614.63
7.2.330.0170.00016.33
7.2.320.0070.01016.62
7.2.310.0000.01816.62
7.2.300.0120.00916.63
7.2.290.0000.02416.69
7.2.00.0150.00719.02
7.1.100.0040.01118.03
7.1.70.0000.00817.03
7.1.60.0070.01619.40
7.1.50.0040.01116.79
7.1.00.0000.03722.31
7.0.200.0000.01016.81
7.0.140.0000.08022.09
7.0.120.0000.07022.26
7.0.60.0130.08020.11
7.0.50.0130.06317.89
7.0.40.0000.09320.03
7.0.30.0170.04320.25
7.0.20.0300.06020.22
7.0.10.0100.05320.19
7.0.00.0070.04020.23
5.6.210.0070.09020.63
5.6.200.0100.08318.18
5.6.190.0030.04320.49
5.6.180.0370.06320.46
5.6.170.0400.06720.48
5.6.160.0100.06020.71
5.6.150.0030.05718.19
5.6.140.0070.05018.24
5.6.130.0070.07318.21
5.6.120.0100.08321.13
5.6.110.0130.07021.11
5.6.100.0070.06021.02
5.6.90.0130.08021.00
5.6.80.0130.07320.44
5.6.70.4230.04320.28
5.5.350.0100.08320.50
5.5.340.0070.04318.00
5.5.330.0070.08020.28
5.5.320.0100.08720.31
5.5.310.0400.07320.23
5.5.300.0100.07717.96
5.5.290.0130.07018.04
5.5.280.0070.07020.97
5.5.270.0070.03720.88
5.5.260.0030.09020.98
5.5.250.0100.06320.58
5.5.240.0130.04720.28
5.4.450.0100.03319.57
5.4.440.0070.03719.25
5.4.430.0070.04319.47
5.4.420.0000.04019.47
5.4.410.0000.05019.35
5.4.400.0070.03319.13
5.4.390.0030.04319.14
5.4.380.0100.03019.00
5.4.370.0000.04018.85
5.4.360.0070.04319.00
5.4.350.0030.03719.14
5.4.340.0070.03319.15
5.4.320.0030.07718.89
5.4.310.0130.06719.30
5.4.300.0030.08019.00
5.4.290.0030.04719.08
5.4.280.0030.07318.97
5.4.270.0100.04319.14
5.4.260.0000.08319.13
5.4.250.0130.06718.97
5.4.240.0130.07018.99
5.4.230.0200.07019.26
5.4.220.0100.07318.86
5.4.210.0130.06019.23
5.4.200.0100.06018.97
5.4.190.0130.05319.07
5.4.180.0100.04319.23
5.4.170.0030.07718.84
5.4.160.0000.08319.22
5.4.150.0070.04719.09
5.4.140.0070.07716.39
5.4.130.0070.05316.49
5.4.120.0030.07016.37
5.4.110.0100.04016.43
5.4.100.0130.07016.41
5.4.90.0100.06716.37
5.4.80.0100.06716.46
5.4.70.0100.03716.38
5.4.60.0100.05316.44
5.4.50.0100.03716.36
5.4.40.0070.03716.45
5.4.30.0130.06716.27
5.4.20.0170.03316.39
5.4.10.0030.07716.50
5.4.00.0070.04315.74
5.3.290.0070.06714.70
5.3.280.0130.07014.77
5.3.270.0130.03014.77
5.3.260.0030.07714.64
5.3.250.0070.06314.68
5.3.240.0100.07314.61
5.3.230.0030.07714.49
5.3.220.0100.06314.57
5.3.210.0030.07014.56
5.3.200.0100.03014.64
5.3.190.0070.05714.58
5.3.180.0170.06714.72
5.3.170.0030.07014.59
5.3.160.0100.03714.62
5.3.150.0070.03714.56
5.3.140.0130.06314.52
5.3.130.0000.05014.55
5.3.120.0130.06714.44
5.3.110.0070.07714.55
5.3.100.0070.03713.93
5.3.90.0030.03714.07
5.3.80.0070.04014.04
5.3.70.0030.03714.04
5.3.60.0000.05014.07
5.3.50.0100.04014.00
5.3.40.0100.05014.11
5.3.30.0000.07713.89
5.3.20.0030.07313.64
5.3.10.0070.07013.84
5.3.00.0070.07013.53
5.2.170.0030.06711.12
5.2.160.0000.06711.16
5.2.150.0000.05011.23
5.2.140.0170.03711.04
5.2.130.0070.06011.09
5.2.120.0100.05711.16
5.2.110.0100.05311.15
5.2.100.0130.05711.14
5.2.90.0030.05711.02
5.2.80.0000.06711.10
5.2.70.0030.07011.12
5.2.60.0100.05710.94
5.2.50.0030.05311.00
5.2.40.0070.03310.95
5.2.30.0070.06010.98
5.2.20.0070.04010.86
5.2.10.0130.02010.91
5.2.00.0000.05310.77
5.1.60.0000.03310.07
5.1.50.0070.05310.02
5.1.40.0030.04310.03
5.1.30.0000.05010.40
5.1.20.0030.05010.41
5.1.10.0130.04710.23
5.1.00.0030.04710.21
5.0.50.0000.0278.58
5.0.40.0030.0478.52
5.0.30.0000.0678.52
5.0.20.0000.0308.52
5.0.10.0070.0238.52
5.0.00.0000.0638.52
4.4.90.0030.0338.52
4.4.80.0030.0278.52
4.4.70.0030.0378.52
4.4.60.0030.0278.52
4.4.50.0000.0178.52
4.4.40.0030.0508.52
4.4.30.0000.0408.52
4.4.20.0070.0178.52
4.4.10.0030.0178.52
4.4.00.0100.0478.52
4.3.110.0000.0378.52
4.3.100.0000.0278.52
4.3.90.0000.0338.52
4.3.80.0000.0278.52
4.3.70.0030.0338.52
4.3.60.0000.0308.52
4.3.50.0000.0378.52
4.3.40.0030.0378.52
4.3.30.0000.0378.52
4.3.20.0030.0338.52
4.3.10.0000.0408.52
4.3.00.0030.0338.52

preferences:
39.29 ms | 401 KiB | 5 Q