3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace RN\Pitt { class Amt {} } namespace { $obj = new RN\Pitt\Amt; var_dump($obj); $sub = 'Pitt'; $class = 'Amt'; $name = "RN\\$sub\\$class"; var_dump(class_exists($name)); var_dump($name); $obj = new $name(); var_dump($obj); }

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)
8.3.60.0140.00018.18
8.3.50.0250.00421.99
8.3.40.0120.00618.59
8.3.30.0080.00518.82
8.3.20.0040.00420.21
8.3.10.0070.00021.52
8.3.00.0000.01017.55
8.2.180.0120.00318.16
8.2.170.0120.00322.96
8.2.160.0130.00320.29
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00421.03
8.2.110.0030.00622.04
8.2.100.0060.00619.95
8.2.90.0040.00419.22
8.2.80.0040.00417.97
8.2.70.0060.00317.50
8.2.60.0000.00817.93
8.2.50.0000.00818.07
8.2.40.0060.00319.94
8.2.30.0030.00618.11
8.2.20.0030.00617.72
8.2.10.0070.00018.09
8.2.00.0000.00817.61
8.1.280.0120.00625.92
8.1.270.0110.00423.91
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0070.00423.97
8.1.230.0110.00019.16
8.1.220.0030.00517.74
8.1.210.0050.00318.77
8.1.200.0090.00017.36
8.1.190.0030.00617.23
8.1.180.0000.00918.10
8.1.170.0040.00418.60
8.1.160.0040.00422.00
8.1.150.0030.00518.70
8.1.140.0000.00817.43
8.1.130.0030.00317.77
8.1.120.0070.00017.41
8.1.110.0000.00817.36
8.1.100.0000.00717.29
8.1.90.0080.00017.28
8.1.80.0070.00017.41
8.1.70.0000.00817.39
8.1.60.0030.00517.39
8.1.50.0050.00217.49
8.1.40.0000.00817.30
8.1.30.0050.00317.54
8.1.20.0000.00717.58
8.1.10.0000.00717.53
8.1.00.0070.00017.38
8.0.300.0040.00418.77
8.0.290.0070.00016.63
8.0.280.0000.00718.38
8.0.270.0030.00317.12
8.0.260.0060.00017.23
8.0.250.0000.00716.96
8.0.240.0030.00316.96
8.0.230.0070.00016.85
8.0.220.0030.00316.80
8.0.210.0000.00716.86
8.0.200.0070.00316.90
8.0.190.0070.00016.85
8.0.180.0080.00016.76
8.0.170.0000.00716.87
8.0.160.0030.00316.79
8.0.150.0070.00016.76
8.0.140.0060.00316.79
8.0.130.0060.00013.39
8.0.120.0040.00416.83
8.0.110.0000.00716.93
8.0.100.0050.00216.72
8.0.90.0030.00316.91
8.0.80.0150.00016.87
8.0.70.0000.00716.88
8.0.60.0000.00816.99
8.0.50.0040.00416.86
8.0.30.0120.01016.84
8.0.20.0090.01017.40
8.0.10.0040.00416.82
8.0.00.0060.01316.59
7.4.330.0030.00315.07
7.4.320.0080.00016.45
7.4.300.0000.00616.47
7.4.290.0070.00016.47
7.4.280.0050.00316.45
7.4.270.0000.00716.43
7.4.260.0060.00316.54
7.4.250.0030.00716.31
7.4.240.0000.00716.42
7.4.230.0000.00716.27
7.4.220.0070.01016.55
7.4.210.0000.01316.50
7.4.200.0000.00816.45
7.4.160.0060.01316.55
7.4.150.0060.01317.40
7.4.140.0060.01317.86
7.4.130.0060.01316.56
7.4.120.0080.00916.39
7.4.110.0060.01316.47
7.4.100.0090.01516.49
7.4.90.0100.00716.43
7.4.80.0090.00919.39
7.4.70.0150.00616.40
7.4.60.0070.01116.51
7.4.50.0000.00416.28
7.4.40.0060.01116.46
7.4.30.0000.01616.38
7.4.00.0040.00715.00
7.3.330.0000.00913.24
7.3.320.0050.00013.22
7.3.310.0000.00716.16
7.3.300.0030.00316.23
7.3.290.0050.00916.18
7.3.280.0080.01016.22
7.3.270.0070.01017.40
7.3.260.0040.01516.25
7.3.240.0100.00716.36
7.3.230.0120.00816.39
7.3.210.0110.00816.39
7.3.200.0060.01519.39
7.3.190.0130.01016.33
7.3.180.0080.00816.24
7.3.170.0100.00616.30
7.3.160.0140.00716.56
7.3.120.0000.01414.44
7.2.330.0070.01416.57
7.2.320.0090.00916.62
7.2.310.0060.01116.64
7.2.300.0100.00716.41
7.2.290.0100.00616.44
7.2.00.0060.00619.38
7.1.100.0000.01017.92
7.1.70.0000.00717.28
7.1.60.0140.01019.25
7.1.50.0130.01017.04
7.1.00.0000.07722.44
7.0.200.0050.00216.80
7.0.140.0100.07022.01
7.0.100.0070.08719.89
7.0.90.0130.07719.92
7.0.80.0170.07319.91
7.0.70.0170.07019.91
7.0.60.0330.07719.78
7.0.50.0070.08720.28
7.0.40.0070.04320.14
7.0.30.0100.06720.08
7.0.20.0130.05019.99
7.0.10.0130.07020.11
7.0.00.0070.08020.13
5.6.280.0030.07320.89
5.6.250.0030.08720.63
5.6.240.0000.08320.69
5.6.230.0100.07020.57
5.6.220.0100.07720.61
5.6.210.0130.07320.64
5.6.200.0170.04021.02
5.6.190.0070.08721.00
5.6.180.0100.08021.16
5.6.170.0170.07021.01
5.6.160.0030.08721.04
5.6.150.0100.07321.02
5.6.140.0030.08320.95
5.6.130.0200.06320.94
5.6.120.0070.08721.16
5.6.110.0030.06321.15
5.6.100.0070.05320.93
5.6.90.0100.03720.93
5.6.80.0100.04320.42
5.6.70.0130.07720.40
5.6.60.0200.06320.29
5.6.50.0030.06020.48
5.6.40.0100.07720.48
5.6.30.0030.08320.38
5.6.20.0070.06320.40
5.6.10.0130.06720.38
5.6.00.0030.08320.43
5.5.380.0030.04320.54
5.5.370.0030.08320.41
5.5.360.0100.07020.55
5.5.350.0070.08720.46
5.5.340.0070.07320.83
5.5.330.0100.07020.63
5.5.320.0030.06020.85
5.5.310.0030.08720.77
5.5.300.0170.07020.75
5.5.290.0170.07320.86
5.5.280.0070.07720.76
5.5.270.0170.06020.91
5.5.260.0070.08020.62
5.5.250.0070.05320.69
5.5.240.0100.07720.28
5.5.230.0100.07320.27
5.5.220.0100.07720.23
5.5.210.0170.07020.24
5.5.200.0130.06720.11
5.5.190.0170.07020.16
5.5.180.0100.07020.26
5.5.160.0070.05320.25
5.5.150.0070.08720.20
5.5.140.0070.08020.26
5.5.130.0100.05320.20
5.5.120.0070.08020.25
5.5.110.0100.06020.23
5.5.100.0100.07320.12
5.5.90.0100.04020.14
5.5.80.0130.07020.14
5.5.70.0030.08020.09
5.5.60.0100.04719.98
5.5.50.0100.07320.04
5.5.40.0100.07720.14
5.5.30.0170.07320.05
5.5.20.0070.07320.01
5.5.10.0170.07020.03
5.5.00.0100.08020.06
5.4.450.0100.05719.37
5.4.440.0000.06719.48
5.4.430.0100.06719.44
5.4.420.0130.06019.27
5.4.410.0100.06719.23
5.4.400.0130.07718.95
5.4.390.0100.07019.21
5.4.380.0030.07718.90
5.4.370.0100.04018.97
5.4.360.0000.05019.13
5.4.350.0100.07319.21
5.4.340.0130.07019.22
5.4.320.0100.07319.18
5.4.310.0100.06718.90
5.4.300.0000.04319.09
5.4.290.0100.07019.20
5.4.280.0170.07019.03
5.4.270.0100.06319.22
5.4.260.0070.04318.88
5.4.250.0030.06719.23
5.4.240.0100.07018.90
5.4.230.0130.05319.09
5.4.220.0100.06319.04
5.4.210.0100.07718.89
5.4.200.0070.08319.04
5.4.190.0100.07319.17
5.4.180.0100.07719.20
5.4.170.0070.08018.84
5.4.160.0070.06018.86
5.4.150.0070.08019.16
5.4.140.0070.07316.45
5.4.130.0100.08316.43
5.4.120.0000.07716.27
5.4.110.0170.06716.39
5.4.100.0030.08316.50
5.4.90.0170.05316.39
5.4.80.0130.06316.46
5.4.70.0130.07316.32
5.4.60.0030.07316.48
5.4.50.0000.07716.44
5.4.40.0100.07316.45
5.4.30.0070.06716.39
5.4.20.0100.06716.48
5.4.10.0070.07316.43
5.4.00.0030.07015.89
5.3.290.0170.07014.64
5.3.280.0070.07714.62
5.3.270.0100.07714.62
5.3.260.0100.07014.55
5.3.250.0070.08014.67
5.3.240.0200.06314.69
5.3.230.0130.07014.66
5.3.220.0030.07014.57
5.3.210.0070.07714.59
5.3.200.0100.07014.52
5.3.190.0070.05014.63
5.3.180.0070.07014.64
5.3.170.0170.04714.57
5.3.160.0170.06714.59
5.3.150.0100.06314.62
5.3.140.0030.08014.48
5.3.130.0070.04714.57
5.3.120.0100.06714.66
5.3.110.0070.04714.54
5.3.100.0070.07713.96
5.3.90.0130.08314.07
5.3.80.0030.06313.94
5.3.70.0070.06014.12
5.3.60.0130.04713.97
5.3.50.0000.04013.83
5.3.40.0000.04013.88
5.3.30.0070.03313.91
5.3.20.0030.03713.66
5.3.10.0000.03713.74
5.3.00.0030.03313.64
5.2.170.0030.04012.61
5.2.160.0030.05312.61
5.2.150.0100.05712.61
5.2.140.0000.03312.61
5.2.130.0030.03312.61
5.2.120.0030.05712.61
5.2.110.0070.02312.61
5.2.100.0030.03312.61
5.2.90.0030.03012.61
5.2.80.0070.02712.61
5.2.70.0030.02712.61
5.2.60.0000.03012.61
5.2.50.0070.02712.61
5.2.40.0000.02712.61
5.2.30.0070.02712.61
5.2.20.0030.03012.61
5.2.10.0030.02712.61
5.2.00.0000.03312.61
5.1.60.0000.02712.61
5.1.50.0030.02012.61
5.1.40.0030.02312.61
5.1.30.0030.02012.61
5.1.20.0100.02012.61
5.1.10.0000.02312.61
5.1.00.0000.03012.61
5.0.50.0070.01312.61
5.0.40.0000.02012.61
5.0.30.0000.04012.61
5.0.20.0030.02712.61
5.0.10.0030.01712.61
5.0.00.0000.03012.61
4.4.90.0000.01712.61
4.4.80.0000.01712.61
4.4.70.0030.01312.61
4.4.60.0000.01712.61
4.4.50.0000.01312.61
4.4.40.0000.02712.61
4.4.30.0030.01012.61
4.4.20.0000.01712.61
4.4.10.0030.02012.61
4.4.00.0000.02712.61
4.3.110.0000.01312.61
4.3.100.0000.01712.61
4.3.90.0000.02012.61
4.3.80.0000.02312.61
4.3.70.0030.01312.61
4.3.60.0000.01712.61
4.3.50.0000.01712.61
4.3.40.0000.02712.61
4.3.30.0000.01712.61
4.3.20.0000.01712.61
4.3.10.0030.01312.61
4.3.00.0000.01312.61

preferences:
43.76 ms | 401 KiB | 5 Q