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)
8.3.40.0070.01318.71
8.3.30.0100.00318.92
8.3.20.0070.00020.21
8.3.10.0000.00921.91
8.3.00.0080.00017.80
8.2.170.0140.00322.96
8.2.160.0100.00320.52
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0120.00626.16
8.2.120.0000.00720.96
8.2.110.0040.00422.16
8.2.100.0080.00419.76
8.2.90.0000.00819.22
8.2.80.0000.00817.97
8.2.70.0030.00617.38
8.2.60.0050.00317.93
8.2.50.0040.00418.07
8.2.40.0000.00819.88
8.2.30.0000.00918.05
8.2.20.0040.00417.59
8.2.10.0000.00818.16
8.2.00.0040.00417.60
8.1.270.0040.00423.91
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0060.00323.91
8.1.230.0070.00318.86
8.1.220.0040.00417.76
8.1.210.0040.00418.77
8.1.200.0060.00317.13
8.1.190.0040.00417.00
8.1.180.0040.00418.10
8.1.170.0040.00418.45
8.1.160.0040.00421.85
8.1.150.0030.00618.76
8.1.140.0000.00717.41
8.1.130.0030.00317.66
8.1.120.0030.00317.29
8.1.110.0020.00517.37
8.1.100.0030.00317.43
8.1.90.0070.00017.38
8.1.80.0070.00017.28
8.1.70.0080.00017.32
8.1.60.0050.00317.53
8.1.50.0030.00517.46
8.1.40.0060.00317.35
8.1.30.0040.00417.58
8.1.20.0080.00017.48
8.1.10.0000.00717.42
8.1.00.0070.00017.54
8.0.300.0000.00718.77
8.0.290.0070.00016.75
8.0.280.0000.00718.48
8.0.270.0070.00017.24
8.0.260.0000.00617.29
8.0.250.0000.00716.97
8.0.240.0030.00316.95
8.0.230.0000.00716.95
8.0.220.0050.00316.79
8.0.210.0030.00316.88
8.0.200.0040.00416.83
8.0.190.0000.00716.84
8.0.180.0040.00416.96
8.0.170.0040.00416.81
8.0.160.0000.00716.75
8.0.150.0070.00016.68
8.0.140.0070.00016.86
8.0.130.0060.00013.20
8.0.120.0040.00416.87
8.0.110.0000.00816.82
8.0.100.0080.00016.89
8.0.90.0030.00516.68
8.0.80.0080.00816.84
8.0.70.0070.00016.75
8.0.60.0040.00416.95
8.0.50.0030.00516.74
8.0.30.0110.00817.04
8.0.20.0110.01117.40
8.0.10.0040.00416.74
8.0.00.0060.01116.76
7.4.330.0050.00015.02
7.4.320.0000.00716.43
7.4.300.0030.00316.51
7.4.290.0000.00716.43
7.4.280.0040.00416.56
7.4.270.0070.00016.57
7.4.260.0030.00616.40
7.4.250.0000.00816.51
7.4.240.0020.00516.53
7.4.230.0000.00716.32
7.4.220.0070.01116.55
7.4.210.0030.01116.50
7.4.200.0040.00416.55
7.4.160.0090.00616.50
7.4.150.0060.01217.40
7.4.140.0050.01217.86
7.4.130.0250.00616.53
7.4.120.0140.00516.48
7.4.110.0100.00716.39
7.4.100.0110.00616.46
7.4.90.0030.01616.46
7.4.80.0100.00719.39
7.4.70.0170.00716.54
7.4.60.0070.01016.46
7.4.50.0000.00516.20
7.4.40.0140.00316.53
7.4.30.0090.00616.54
7.4.00.0030.00914.84
7.3.330.0000.00613.07
7.3.320.0050.00013.21
7.3.310.0070.00016.33
7.3.300.0060.00016.10
7.3.290.0040.01016.25
7.3.280.0090.00616.24
7.3.270.0070.01017.40
7.3.260.0130.00316.47
7.3.240.0140.00316.56
7.3.230.0060.01016.39
7.3.210.0090.00616.37
7.3.200.0160.00319.39
7.3.190.0070.01616.28
7.3.180.0090.01316.21
7.3.170.0110.00616.27
7.3.160.0060.00916.21
7.3.120.0000.01114.91
7.3.00.0060.00616.50
7.2.330.0220.00316.55
7.2.320.0080.00816.73
7.2.310.0110.00616.38
7.2.300.0090.00616.64
7.2.290.0090.00916.46
7.2.130.0030.01016.68
7.2.120.0070.01116.69
7.2.110.0030.01016.63
7.2.100.0030.01216.82
7.2.90.0100.00316.48
7.2.80.0110.00416.79
7.2.70.0050.00517.03
7.2.60.0030.00916.73
7.2.50.0030.00916.51
7.2.40.0040.00716.92
7.2.30.0070.00416.74
7.2.20.0100.00716.83
7.2.10.0000.01316.92
7.2.00.0020.01118.19
7.1.250.0000.01015.84
7.1.240.0030.00615.87
7.1.230.0040.00715.76
7.1.220.0030.00615.86
7.1.210.0080.00415.66
7.1.200.0070.00415.82
7.1.190.0090.00015.61
7.1.180.0080.00315.75
7.1.170.0100.00315.64
7.1.160.0000.01115.82
7.1.150.0040.00715.63
7.1.140.0000.01315.80
7.1.130.0000.01215.78
7.1.120.0060.00615.89
7.1.110.0040.00715.65
7.1.100.0040.00616.86
7.1.90.0080.00315.82
7.1.80.0000.01115.82
7.1.70.0020.00616.53
7.1.60.0030.00716.33
7.1.50.0090.00516.29
7.1.40.0140.00015.72
7.1.30.0030.00815.76
7.1.20.0070.00715.56
7.1.10.0070.00415.73
7.1.00.0040.04019.01
7.0.330.0100.00615.25
7.0.320.0090.00615.45
7.0.310.0070.00315.46
7.0.300.0000.01315.16
7.0.290.0100.00015.25
7.0.280.0050.00315.32
7.0.270.0000.00815.36
7.0.260.0030.00715.12
7.0.250.0030.00615.28
7.0.240.0030.00915.46
7.0.230.0040.00715.29
7.0.220.0060.00615.39
7.0.210.0000.01115.31
7.0.200.0020.00716.24
7.0.190.0100.00315.51
7.0.180.0090.00315.44
7.0.170.0060.00315.34
7.0.160.0060.00315.61
7.0.150.0000.01215.48
7.0.140.0080.03718.78
7.0.130.0000.00915.57
7.0.120.0080.00815.28
7.0.110.0070.00315.46
7.0.100.0050.04017.69
7.0.90.0180.04017.60
7.0.80.0130.04117.69
7.0.70.0120.04217.72
7.0.60.0130.03517.64
7.0.50.0100.04417.79
7.0.40.0080.04116.84
7.0.30.0030.05016.76
7.0.20.0050.04816.83
7.0.10.0070.03116.77
7.0.00.0120.04016.84
5.6.380.0150.00314.14
5.6.370.0040.00714.62
5.6.360.0060.00314.47
5.6.350.0040.00414.08
5.6.340.0070.00714.03
5.6.330.0050.00514.30
5.6.320.0030.00614.24
5.6.310.0030.00714.43
5.6.300.0040.00714.19
5.6.290.0030.00914.57
5.6.280.0050.04017.56
5.6.270.0030.01414.39
5.6.260.0030.01014.60
5.6.250.0090.04217.61
5.6.240.0080.04317.39
5.6.230.0080.04517.63
5.6.220.0050.04717.50
5.6.210.0200.03217.48
5.6.200.0100.04317.81
5.6.190.0050.04617.70
5.6.180.0120.02717.65
5.6.170.0070.02717.52
5.6.160.0090.04417.62
5.6.150.0050.03317.45
5.6.140.0070.03317.50
5.6.130.0050.04517.77
5.6.120.0090.04417.75
5.6.110.0040.04517.59
5.6.100.0080.04717.70
5.6.90.0030.03217.72
5.6.80.0130.03117.19
5.6.70.0080.04317.35
5.6.60.0090.03817.35
5.6.50.0050.04617.32
5.6.40.0060.04617.20
5.6.30.0110.02517.30
5.6.20.0080.02517.30
5.6.10.0050.02317.22
5.6.00.0060.04417.24
5.5.380.0080.02515.95
5.5.370.0100.03915.91
5.5.360.0100.03415.84
5.5.350.0020.05015.79
5.5.340.0020.04416.02
5.5.330.0020.04416.04
5.5.320.0010.04316.02
5.5.310.0060.04116.07
5.5.300.0110.03516.02
5.5.290.0050.04115.96
5.5.280.0080.04016.06
5.5.270.0070.04416.04
5.5.260.0030.02615.98
5.5.250.0040.04415.86
5.5.240.0020.04315.73
5.5.230.0080.03615.60
5.5.220.0020.04515.71
5.5.210.0060.04215.71
5.5.200.0110.02215.66
5.5.190.0030.04715.66
5.5.180.0050.04315.70
5.5.170.0060.00611.23
5.5.160.0050.04215.67
5.5.150.0100.03715.74
5.5.140.0070.04015.71
5.5.130.0000.04015.74
5.5.120.0100.03515.64
5.5.110.0080.03515.66
5.5.100.0050.03915.66
5.5.90.0080.03815.65
5.5.80.0100.03515.61
5.5.70.0070.04315.60
5.5.60.0030.04715.67
5.5.50.0070.04315.58
5.5.40.0050.04215.66
5.5.30.0150.03315.65
5.5.20.0100.02815.61
5.5.10.0060.03515.63
5.5.00.0050.04215.57
5.4.450.0060.04215.27
5.4.440.0050.04115.27
5.4.430.0030.04215.22
5.4.420.0050.03715.33
5.4.410.0070.03815.13
5.4.400.0200.02715.16
5.4.390.0090.03215.15
5.4.380.0080.03715.20
5.4.370.0060.03715.15
5.4.360.0020.03815.18
5.4.350.0050.04015.12
5.4.340.0060.03715.11
5.4.330.0040.00811.18
5.4.320.0060.04015.11
5.4.310.0030.04315.15
5.4.300.0050.04115.17
5.4.290.0080.03915.10
5.4.280.0070.03515.16
5.4.270.0050.03815.16
5.4.260.0070.03915.04
5.4.250.0130.03315.01
5.4.240.0030.03515.15
5.4.230.0080.03915.15
5.4.220.0070.04215.06
5.4.210.0050.04215.15
5.4.200.0050.04215.15
5.4.190.0070.03715.15
5.4.180.0100.04015.00
5.4.170.0080.04015.13
5.4.160.0050.04215.16
5.4.150.0080.03815.16
5.4.140.0150.01613.82
5.4.130.0080.03613.72
5.4.120.0040.03913.68
5.4.110.0080.02713.76
5.4.100.0040.03913.80
5.4.90.0080.03513.73
5.4.80.0010.02513.74
5.4.70.0050.03813.83
5.4.60.0090.01813.72
5.4.50.0020.04113.82
5.4.40.0080.04013.81
5.4.30.0080.03313.81
5.4.20.0070.03513.79
5.4.10.0110.03813.71
5.4.00.0030.03313.58
5.3.290.0090.03912.98
5.3.280.0030.04112.91
5.3.270.0110.03312.88
5.3.260.0070.04112.95
5.3.250.0020.04212.88
5.3.240.0080.03612.92
5.3.230.0050.03812.95
5.3.220.0030.03812.88
5.3.210.0100.03612.86
5.3.200.0030.04212.88
5.3.190.0050.04012.94
5.3.180.0050.04012.87
5.3.170.0070.02712.89
5.3.160.0050.04012.94
5.3.150.0060.02412.89
5.3.140.0020.04412.88
5.3.130.0050.03912.82
5.3.120.0070.03712.93
5.3.110.0030.04412.82
5.3.100.0050.02212.63
5.3.90.0050.03712.58
5.3.80.0050.03012.66
5.3.70.0080.03512.54
5.3.60.0090.02712.53
5.3.50.0030.04012.62
5.3.40.0050.04312.59
5.3.30.0020.02712.51
5.3.20.0070.03612.50
5.3.10.0000.03812.44
5.3.00.0030.04012.43
5.2.170.0060.03011.19
5.2.160.0040.03211.10
5.2.150.0020.03011.15
5.2.140.0030.03411.18
5.2.130.0030.03511.13
5.2.120.0000.03311.04
5.2.110.0030.03111.12
5.2.100.0030.03611.05
5.2.90.0070.03011.15
5.2.80.0050.03111.06
5.2.70.0030.03111.16
5.2.60.0080.03311.11
5.2.50.0050.03111.02
5.2.40.0020.03311.09
5.2.30.0030.03511.00
5.2.20.0070.02811.01
5.2.10.0030.03511.04
5.2.00.0050.03010.88
5.1.60.0030.03110.60
5.1.50.0030.02810.58
5.1.40.0040.02310.58
5.1.30.0070.02810.78
5.1.20.0000.03110.78
5.1.10.0080.01610.62
5.1.00.0090.03210.64
5.0.50.0050.02110.02
5.0.40.0030.02310.02
5.0.30.0020.03310.02
5.0.20.0030.02410.02
5.0.10.0020.02410.02
5.0.00.0030.01710.02
4.4.90.0020.02010.02
4.4.80.0050.01310.02
4.4.70.0050.01710.02
4.4.60.0020.02010.02
4.4.50.0020.01810.02
4.4.40.0020.02810.02
4.4.30.0020.02210.02
4.4.20.0010.02310.02
4.4.10.0080.00610.02
4.4.00.0020.03010.02
4.3.110.0030.02010.02
4.3.100.0050.01710.02
4.3.90.0000.02010.02
4.3.80.0020.02810.02
4.3.70.0060.00810.02
4.3.60.0030.01810.02
4.3.50.0000.02110.02
4.3.40.0060.02310.02
4.3.30.0000.01910.02
4.3.20.0020.01810.02
4.3.10.0000.02310.02
4.3.00.0010.01810.02

preferences:
37.28 ms | 400 KiB | 5 Q