3v4l.org

run code in 300+ PHP versions simultaneously
<?php use \This\Namespase\Does\Not\Exists\FooBar; var_dump( FooBar::class, // use ::class \class_exists(FooBar::class), // check class existence with autoload \class_exists(FooBar::class, false) // check class existence without autoload );

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)
8.3.130.0150.00418.67
8.3.120.0040.00418.94
8.3.110.0000.00720.94
8.3.100.0110.00418.29
8.3.90.0040.01126.77
8.3.80.0060.00316.50
8.3.70.0180.00316.58
8.3.60.0110.00616.50
8.3.50.0140.00718.20
8.3.40.0070.01518.67
8.3.30.0090.00618.50
8.3.20.0000.00724.18
8.3.10.0040.00424.66
8.3.00.0040.00426.16
8.2.250.0030.00618.20
8.2.240.0040.00417.11
8.2.230.0110.00022.58
8.2.220.0070.01324.06
8.2.210.0060.00326.77
8.2.200.0040.00416.25
8.2.190.0040.01116.58
8.2.180.0070.00725.92
8.2.170.0140.00018.74
8.2.160.0070.00722.96
8.2.150.0040.00425.66
8.2.140.0080.00024.66
8.2.130.0070.00026.16
8.2.120.0030.00619.26
8.2.110.0040.00420.57
8.2.100.0120.00417.66
8.2.90.0000.00817.97
8.2.80.0000.00818.66
8.2.70.0000.01117.50
8.2.60.0000.00817.80
8.2.50.0000.00918.07
8.2.40.0050.00217.66
8.2.30.0080.00317.98
8.2.20.0000.00719.71
8.2.10.0060.00319.17
8.2.00.0050.00319.11
8.1.300.0080.00817.69
8.1.290.0030.00730.84
8.1.280.0110.00425.92
8.1.270.0040.00423.99
8.1.260.0030.00626.35
8.1.250.0070.00028.09
8.1.240.0100.00023.80
8.1.230.0060.00620.87
8.1.220.0070.00017.74
8.1.210.0040.00418.77
8.1.200.0050.00517.23
8.1.190.0030.00617.10
8.1.180.0000.00918.94
8.1.170.0060.00318.62
8.1.160.0040.00418.80
8.1.150.0040.00418.44
8.1.140.0000.00818.66
8.1.130.0030.00317.22
8.1.120.0000.00717.28
8.1.110.0040.00417.21
8.1.100.0000.00717.30
8.1.90.0030.00317.15
8.1.80.0100.00017.32
8.1.70.0030.00317.19
8.1.60.0030.00617.43
8.1.50.0030.00517.26
8.1.40.0000.00817.27
8.1.30.0080.00017.51
8.1.20.0000.00917.40
8.1.10.0040.00417.39
8.1.00.0000.00717.33
8.0.300.0000.00718.77
8.0.290.0040.00416.63
8.0.280.0050.00218.24
8.0.270.0000.00717.86
8.0.260.0000.00716.72
8.0.250.0000.00716.73
8.0.240.0030.00316.83
8.0.230.0060.00016.69
8.0.220.0000.00716.72
8.0.210.0040.00416.60
8.0.200.0000.00616.80
8.0.190.0090.00016.86
8.0.180.0000.00716.79
8.0.170.0030.00616.79
8.0.160.0040.00416.70
8.0.150.0030.00316.60
8.0.140.0070.00016.70
8.0.130.0060.00013.23
8.0.120.0000.00816.75
8.0.110.0040.00416.66
8.0.100.0020.00516.74
8.0.90.0050.00216.69
8.0.80.0060.00216.64
8.0.70.0020.00516.74
8.0.60.0020.00616.66
8.0.50.0030.00516.61
8.0.30.0050.00216.72
8.0.20.0000.00716.76
8.0.10.0040.00316.65
8.0.00.0030.00416.69
7.4.330.0050.00015.55
7.4.320.0000.00716.45
7.4.300.0000.00616.43
7.4.290.0030.00316.43
7.4.280.0070.00016.39
7.4.270.0080.00016.31
7.4.260.0030.00313.14
7.4.250.0030.00616.43
7.4.240.0070.00016.43
7.4.230.0030.00316.37
7.4.220.0050.00216.48
7.4.210.0050.00216.39
7.4.200.0050.00216.43
7.4.190.0020.00516.33
7.4.180.0000.00716.27
7.4.160.0020.00516.36
7.4.150.0030.00316.46
7.4.140.0020.00516.22
7.4.130.0030.00316.10
7.4.120.0030.00316.30
7.4.110.0020.00515.96
7.4.100.0030.00516.27
7.4.90.0030.00316.29
7.4.80.0040.00415.98
7.4.70.0000.00716.14
7.4.60.0020.00516.14
7.4.50.0020.00516.21
7.4.40.0020.00516.07
7.4.30.0040.00316.19
7.4.20.0070.00016.14
7.4.10.0050.00216.26
7.4.00.0020.00516.15
7.3.330.0040.00416.18
7.3.320.0000.00713.00
7.3.310.0000.00715.89
7.3.300.0000.00716.07
7.3.290.0050.00216.01
7.3.280.0030.00316.01
7.3.270.0060.00015.98
7.3.260.0030.00316.05
7.3.250.0000.00615.95
7.3.240.0020.00515.98
7.3.230.0060.00016.04
7.3.220.0020.00515.93
7.3.210.0030.00315.92
7.3.200.0030.00315.94
7.3.190.0020.00515.92
7.3.180.0020.00515.96
7.3.170.0030.00315.95
7.3.160.0060.00015.96
7.3.150.0050.00215.87
7.3.140.0050.00215.92
7.3.130.0020.00515.96
7.3.120.0030.00315.93
7.3.110.0050.00215.91
7.3.100.0000.00715.85
7.3.90.0000.00716.27
7.3.80.0070.00116.01
7.3.70.0030.00316.11
7.3.60.0030.00316.12
7.3.50.0030.00316.14
7.3.40.0020.00516.10
7.3.30.0000.00616.04
7.3.20.0090.00216.21
7.3.10.0020.00616.13
7.3.00.0030.00316.11
7.2.340.0000.00715.95
7.2.330.0030.00316.00
7.2.320.0030.00316.07
7.2.310.0030.00516.06
7.2.300.0030.00316.07
7.2.290.0000.00816.07
7.2.280.0030.00316.01
7.2.270.0050.00316.11
7.2.260.0040.00416.06
7.2.250.0030.00316.09
7.2.240.0070.00016.09
7.2.230.0040.00416.06
7.2.220.0000.00716.07
7.2.210.0000.00715.98
7.2.200.0030.00316.01
7.2.190.0040.00416.17
7.2.180.0040.00416.17
7.2.170.0030.00316.30
7.2.160.0040.00416.27
7.2.150.0050.00216.18
7.2.140.0030.00516.40
7.2.130.0040.00416.29
7.2.120.0040.00416.47
7.2.110.0060.00316.30
7.2.100.0080.00016.42
7.2.90.0080.00016.32
7.2.80.0050.00316.35
7.2.70.0040.00416.35
7.2.60.0080.00016.23
7.2.50.0000.00816.35
7.2.40.0050.00316.37
7.2.30.0030.00516.31
7.2.20.0080.00016.26
7.2.10.0070.00016.39
7.2.00.0040.00416.35
7.1.330.0000.00715.33
7.1.320.0000.00715.42
7.1.310.0030.00315.47
7.1.300.0140.00415.43
7.1.290.0070.00015.42
7.1.280.0030.00315.45
7.1.270.0070.00015.30
7.1.260.0080.00015.35
7.1.250.0000.00715.30
7.1.240.0000.00715.22
7.1.230.0000.00715.34
7.1.220.0030.00315.38
7.1.210.0070.00015.14
7.1.200.0030.00315.31
7.1.190.0030.00315.17
7.1.180.0040.00415.32
7.1.170.0030.00615.25
7.1.160.0030.00515.24
7.1.150.0040.00415.15
7.1.140.0000.00815.24
7.1.130.0020.00515.31
7.1.120.0040.00415.29
7.1.110.0000.00915.21
7.1.100.0040.00415.06
7.1.90.0070.00015.24
7.1.80.0060.01015.31
7.1.70.0030.00315.09
7.1.60.0030.00315.22
7.1.50.0000.00815.27
7.1.40.0000.00715.28
7.1.30.0050.00315.28
7.1.20.0040.00415.21
7.1.10.0030.00315.28
7.1.00.0000.00715.08
7.0.330.0030.00314.89
7.0.320.0030.00315.00
7.0.310.0070.00014.82
7.0.300.0040.00415.04
7.0.290.0030.00314.92
7.0.280.0000.00614.94
7.0.270.0020.00514.99
7.0.260.0030.00314.82
7.0.250.0000.00615.07
7.0.240.0030.00314.96
7.0.230.0030.00314.99
7.0.220.0040.00415.03
7.0.210.0040.00415.11
7.0.200.0180.00015.01
7.0.190.0040.00415.05
7.0.180.0030.00314.95
7.0.170.0040.00414.97
7.0.160.0000.00715.00
7.0.150.0000.00714.87
7.0.140.0070.00015.06
7.0.130.0070.00015.01
7.0.120.0000.00715.13
7.0.110.0050.00215.03
7.0.100.0040.00414.89
7.0.90.0030.00314.71
7.0.80.0070.00014.83
7.0.70.0040.00414.92
7.0.60.0000.00714.89
7.0.50.0030.00514.75
7.0.40.0070.00014.99
7.0.30.0000.00715.00
7.0.20.0030.00314.82
7.0.10.0030.00314.91
7.0.00.0030.00315.02
5.6.400.0050.00215.39
5.6.390.0040.00415.47
5.6.380.0030.00315.64
5.6.370.0000.00615.49
5.6.360.0060.00015.43
5.6.350.0000.00615.64
5.6.340.0000.00715.64
5.6.330.0000.00815.40
5.6.320.0030.00315.41
5.6.310.0030.00315.60
5.6.300.0070.00015.52
5.6.290.0040.00415.43
5.6.280.0030.00315.54
5.6.270.0060.00015.58
5.6.260.0030.00315.38
5.6.250.0030.00315.61
5.6.240.0000.00615.47
5.6.230.0000.00615.45
5.6.220.0000.00615.53
5.6.210.0050.00315.68
5.6.200.0040.00415.63
5.6.190.0030.00315.54
5.6.180.0030.00315.56
5.6.170.0000.00615.59
5.6.160.0000.00615.75
5.6.150.0000.00615.59
5.6.140.0030.00315.74
5.6.130.0000.00615.59
5.6.120.0000.00615.64
5.6.110.0040.00415.44
5.6.100.0030.00315.40
5.6.90.0030.00315.48
5.6.80.0030.00315.56
5.6.70.0030.00315.66
5.6.60.0000.00615.50
5.6.50.0030.00315.44
5.6.40.0030.00315.52
5.6.30.0000.00615.53
5.6.20.0000.00615.48
5.6.10.0000.00715.61
5.6.00.0000.00615.48
5.5.380.0030.00315.61
5.5.370.0060.00015.59
5.5.360.0030.00315.39
5.5.350.0000.00615.47
5.5.340.0000.00615.43
5.5.330.0000.00615.26
5.5.320.0000.00615.40
5.5.310.0030.00315.31
5.5.300.0030.00315.40
5.5.290.0030.00315.45
5.5.280.0000.00615.52
5.5.270.0000.00615.22
5.5.260.0000.00615.35
5.5.250.0000.00715.62
5.5.240.0000.00615.66
5.5.230.0000.00715.57
5.5.220.0030.00315.58
5.5.210.0040.00415.64
5.5.200.0060.00015.29
5.5.190.0050.00215.40
5.5.180.0060.00015.30
5.5.170.0070.00015.17
5.5.160.0000.00615.38
5.5.150.0030.00315.31
5.5.140.0000.00615.21
5.5.130.0000.00615.22
5.5.120.0000.00615.17
5.5.110.0000.00615.30
5.5.100.0030.00315.46
5.5.90.0070.00015.46
5.5.80.0030.00315.53
5.5.70.0000.00815.55
5.5.60.0030.00615.31
5.5.50.0030.00315.57
5.5.40.0060.00015.45
5.5.30.0000.00615.59
5.5.20.0030.00315.66
5.5.10.0000.00615.26
5.5.00.0000.00615.21
5.4.450.0050.00012.38
5.4.440.0050.00012.20
5.4.430.0020.00212.26
5.4.420.0000.00412.46
5.4.410.0000.00512.40
5.4.400.0000.00512.39
5.4.390.0000.00512.20
5.4.380.0000.00512.36
5.4.370.0020.00212.20
5.4.360.0020.00212.30
5.4.350.0000.00512.29
5.4.340.0050.00012.50
5.4.330.0050.00012.39
5.4.320.0000.00512.46
5.4.310.0040.00012.43
5.4.300.0050.00012.27
5.4.290.0050.00012.43
5.4.280.0050.00012.46
5.4.270.0000.00612.57
5.4.260.0000.00512.41
5.4.250.0020.00212.40
5.4.240.0000.00512.33
5.4.230.0030.00311.95
5.4.220.0050.00012.16
5.4.210.0050.00012.19
5.4.200.0000.00512.21
5.4.190.0050.00012.18
5.4.180.0000.00412.22
5.4.170.0020.00212.06
5.4.160.0000.00412.28
5.4.150.0050.00012.20
5.4.140.0000.00512.35
5.4.130.0000.00512.46
5.4.120.0050.00012.41
5.4.110.0050.00012.38
5.4.100.0040.00012.46
5.4.90.0000.00512.46
5.4.80.0040.00012.44
5.4.70.0000.00512.25
5.4.60.0000.00512.49
5.4.50.0050.00012.31
5.4.40.0000.00512.34
5.4.30.0020.00212.46
5.4.20.0050.00012.55
5.4.10.0030.00312.39
5.4.00.0000.00512.32
5.3.290.0000.00512.60
5.3.280.0000.00612.88
5.3.270.0030.00312.73
5.3.260.0030.00312.83
5.3.250.0000.00512.70
5.3.240.0000.00612.59
5.3.230.0020.00212.75
5.3.220.0050.00012.48
5.3.210.0050.00012.88
5.3.200.0000.00512.47
5.3.190.0060.00012.71
5.3.180.0050.00013.07
5.3.170.0050.00012.73
5.3.160.0000.00512.69
5.3.150.0030.00312.70
5.3.140.0000.00612.67
5.3.130.0000.00512.66
5.3.120.0050.00012.64
5.3.110.0000.00512.64
5.3.100.0050.00012.79
5.3.90.0030.00312.86
5.3.80.0060.00012.72
5.3.70.0050.00012.73
5.3.60.0020.00212.82
5.3.50.0060.00012.70
5.3.40.0030.00312.71
5.3.30.0000.00612.57
5.3.20.0000.00612.56
5.3.10.0000.00612.37
5.3.00.0000.00512.30
5.2.170.0000.00511.85
5.2.160.0000.00411.86
5.2.150.0000.00411.79
5.2.140.0000.00511.73
5.2.130.0000.00411.62
5.2.120.0030.00311.71
5.2.110.0000.00511.59
5.2.100.0000.00511.74
5.2.90.0030.00311.66
5.2.80.0000.00511.88
5.2.70.0040.00011.73
5.2.60.0000.00411.62
5.2.50.0040.00011.70
5.2.40.0040.00011.70
5.2.30.0040.00011.63
5.2.20.0020.00211.57
5.2.10.0000.00511.59
5.2.00.0040.00011.43
5.1.60.0000.00410.86
5.1.50.0000.00510.84
5.1.40.0000.00510.93
5.1.30.0050.00011.04
5.1.20.0040.00010.84
5.1.10.0040.00010.84
5.1.00.0050.00010.84
5.0.50.0040.00010.84
5.0.40.0000.00310.84
5.0.30.0040.00010.84
5.0.20.0030.00010.84
5.0.10.0030.00010.84
5.0.00.0030.00010.84
4.4.90.0030.00010.84
4.4.80.0000.00210.84
4.4.70.0000.00210.84
4.4.60.0000.00210.84
4.4.50.0000.00210.84
4.4.40.0000.00210.84
4.4.30.0020.00010.84
4.4.20.0020.00010.84
4.4.10.0000.00210.84
4.4.00.0000.00210.84
4.3.110.0030.00010.84
4.3.100.0000.00210.84
4.3.90.0000.00210.84
4.3.80.0000.00310.84
4.3.70.0000.00210.84
4.3.60.0030.00010.84
4.3.50.0030.00010.84
4.3.40.0000.00310.84
4.3.30.0000.00210.84
4.3.20.0000.00210.84
4.3.10.0020.00010.84
4.3.00.0000.00210.84

preferences:
27.64 ms | 403 KiB | 5 Q