3v4l.org

run code in 300+ PHP versions simultaneously
<?php function machine_forget(&$data) { $data = null; } $answer = 90; var_dump((string)$answer); machine_forget($answer); var_dump((string)$answer); // shhh no spoilers eval(base64_decode('CmNsYXNzIHpvbWJpZQp7CiAgICBwcm90ZWN0ZWQgJHZhbDsKICAgIHB1YmxpYyBmdW5jdGlvbiBfX2NvbnN0cnVjdCgkdmFsKQogICAgewogICAgICAgICR0aGlzLT52YWwgPSAkdmFsOwogICAgfQoKICAgIHB1YmxpYyBmdW5jdGlvbiBfX2Rlc3RydWN0KCkKICAgIHsKICAgICAgICAkdGhpcy0+dmVzc2VsID0gJHRoaXM7CiAgICB9CgogICAgcHVibGljIGZ1bmN0aW9uIF9fdG9TdHJpbmcoKQogICAgewogICAgICAgIHJldHVybiAkdGhpcy0+dmFsOwogICAgfQp9CgokYW5zd2VyID0gbmV3IHpvbWJpZSgiNDIiKTsKJGFuc3dlci0+dmVzc2VsID0gJiRhbnN3ZXI7')); var_dump((string)$answer); machine_forget($answer); var_dump((string)$answer);

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)
8.3.40.0060.01018.83
8.3.30.0000.01519.09
8.3.20.0080.00020.38
8.3.10.0000.00820.52
8.3.00.0060.00317.75
8.2.170.0100.00722.96
8.2.160.0110.00320.43
8.2.150.0080.00024.18
8.2.140.0030.00724.66
8.2.130.0140.00426.16
8.2.120.0080.00021.90
8.2.110.0060.00320.25
8.2.100.0110.00017.97
8.2.90.0000.00719.34
8.2.80.0080.00017.97
8.2.70.0040.00417.38
8.2.60.0000.00917.93
8.2.50.0060.00318.07
8.2.40.0000.01118.25
8.2.30.0030.00719.45
8.2.20.0040.00417.68
8.2.10.0000.00818.03
8.2.00.0080.00017.75
8.1.270.0080.00022.20
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0090.00024.02
8.1.230.0080.00419.08
8.1.220.0000.00717.79
8.1.210.0040.00418.77
8.1.200.0070.00317.35
8.1.190.0040.00417.23
8.1.180.0000.00818.10
8.1.170.0040.00418.68
8.1.160.0000.00722.13
8.1.150.0000.00818.87
8.1.140.0000.00717.57
8.1.130.0040.00417.75
8.1.120.0070.00017.49
8.1.110.0040.00417.44
8.1.100.0040.00317.50
8.1.90.0000.00717.44
8.1.80.0000.00717.38
8.1.70.0000.00817.43
8.1.60.0060.00317.59
8.1.50.0030.00617.43
8.1.40.0040.00417.53
8.1.30.0040.00417.65
8.1.20.0040.00417.64
8.1.10.0080.00017.61
8.1.00.0000.01017.41
8.0.300.0040.00418.77
8.0.290.0040.00416.63
8.0.280.0050.00318.38
8.0.270.0000.00717.27
8.0.260.0060.00017.24
8.0.250.0030.00317.02
8.0.240.0060.00316.96
8.0.230.0000.00716.88
8.0.220.0000.00816.91
8.0.210.0030.00316.93
8.0.200.0030.00316.81
8.0.190.0000.00716.94
8.0.180.0030.00616.95
8.0.170.0050.00216.95
8.0.160.0000.00817.02
8.0.150.0070.00016.84
8.0.140.0060.00316.88
8.0.130.0050.00013.38
8.0.120.0040.00416.85
8.0.110.0040.00416.73
8.0.100.0000.00816.79
8.0.90.0030.00516.83
8.0.80.0130.00216.93
8.0.70.0000.00716.90
8.0.60.0030.00516.79
8.0.50.0070.00016.85
8.0.30.0110.00817.18
8.0.20.0110.01117.40
8.0.10.0000.00816.89
8.0.00.0080.00916.65
7.4.330.0050.00015.00
7.4.320.0060.00016.52
7.4.300.0030.00316.50
7.4.290.0000.00716.54
7.4.280.0000.00716.51
7.4.270.0030.00316.53
7.4.260.0050.00216.63
7.4.250.0050.00316.55
7.4.240.0070.00016.42
7.4.230.0040.00416.68
7.4.220.0090.00916.66
7.4.210.0110.00416.56
7.4.200.0000.00716.62
7.4.160.0090.00616.46
7.4.150.0160.00317.40
7.4.140.0080.01017.86
7.4.130.0110.00716.46
7.4.120.0090.00816.50
7.4.110.0100.00616.40
7.4.100.0130.00416.40
7.4.90.0100.00616.64
7.4.80.0110.01119.39
7.4.70.0110.00616.30
7.4.60.0100.00716.63
7.4.50.0000.00816.52
7.4.40.0130.00316.32
7.4.30.0050.01016.57
7.4.10.0070.01114.73
7.4.00.0050.01214.56
7.3.330.0050.00013.29
7.3.320.0060.00013.28
7.3.310.0050.00216.16
7.3.300.0000.00716.18
7.3.290.0100.01016.31
7.3.280.0070.00716.31
7.3.270.0170.00717.40
7.3.260.0100.00716.32
7.3.250.0100.00716.42
7.3.240.0110.00616.44
7.3.230.0100.00716.45
7.3.210.0120.00916.36
7.3.200.0100.00719.39
7.3.190.0110.01116.38
7.3.180.0130.00316.51
7.3.170.0130.00316.51
7.3.160.0070.01016.34
7.3.130.0130.00614.94
7.3.120.0100.00714.64
7.3.110.0060.00914.95
7.3.100.0040.00814.88
7.3.90.0090.00314.52
7.3.80.0060.00914.66
7.3.70.0000.01014.75
7.3.60.0040.01114.96
7.3.50.0090.00614.49
7.3.40.0000.01014.46
7.3.30.0030.00714.95
7.3.20.0040.01216.68
7.3.10.0110.00316.47
7.3.00.0100.00616.75
7.2.330.0030.01316.52
7.2.320.0090.00916.58
7.2.310.0140.00716.66
7.2.300.0090.00916.81
7.2.290.0000.01616.61
7.2.260.0080.00715.09
7.2.250.0070.01114.80
7.2.240.0040.01215.08
7.2.230.0030.01215.31
7.2.220.0090.00614.79
7.2.210.0070.00715.30
7.2.200.0090.00614.97
7.2.190.0030.01415.10
7.2.180.0120.00414.99
7.2.170.0100.00314.86
7.2.160.0000.01415.23
7.2.150.0060.00917.05
7.2.140.0040.01116.91
7.2.130.0090.00916.80
7.2.120.0100.00617.14
7.2.110.0100.00716.85
7.2.100.0000.01516.65
7.2.90.0040.01116.96
7.2.80.0070.01116.82
7.2.70.0040.00816.98
7.2.60.0080.00616.90
7.2.50.0060.00816.89
7.2.40.0120.00016.85
7.2.30.0100.00617.16
7.2.20.0040.00816.92
7.2.10.0100.00316.84
7.2.00.0070.01017.20
7.1.330.0040.01115.50
7.1.320.0060.00315.74
7.1.310.0040.00715.51
7.1.300.0030.01015.61
7.1.290.0030.00715.59
7.1.280.0080.00515.76
7.1.270.0000.01715.69
7.1.260.0000.01415.69
7.1.250.0080.00615.79
7.1.240.0030.00915.66
7.1.230.0030.01015.62
7.1.220.0130.00315.72
7.1.210.0090.00615.71
7.1.200.0070.00615.68
7.1.190.0000.01215.88
7.1.180.0030.00615.87
7.1.170.0120.00315.69
7.1.160.0060.00615.64
7.1.150.0090.00615.53
7.1.140.0080.00415.63
7.1.130.0090.00015.89
7.1.120.0080.00815.68
7.1.110.0060.00615.91
7.1.100.0070.00715.99
7.1.90.0040.00815.83
7.1.80.0060.00315.93
7.1.70.0070.00316.55
7.1.60.0120.00717.52
7.1.50.0070.01216.44
7.1.40.0100.00015.80
7.1.30.0060.00615.84
7.1.20.0070.00415.62
7.1.10.0090.00015.67
7.1.00.0070.04219.12
7.0.330.0030.01315.11
7.0.320.0030.01015.45
7.0.310.0040.01115.55
7.0.300.0100.00315.42
7.0.290.0070.00415.37
7.0.280.0100.00315.12
7.0.270.0100.00315.38
7.0.260.0030.00615.29
7.0.250.0120.00015.02
7.0.240.0030.01015.39
7.0.230.0060.00315.34
7.0.220.0100.00315.40
7.0.210.0080.00415.63
7.0.200.0060.00316.11
7.0.190.0030.00515.52
7.0.180.0060.00615.19
7.0.170.0030.00615.23
7.0.160.0030.01015.45
7.0.150.0040.00715.44
7.0.140.0020.04418.60
7.0.130.0100.00315.14
7.0.120.0060.01015.52
7.0.110.0040.01115.47
7.0.100.0060.00615.11
7.0.90.0040.01115.46
7.0.80.0040.00415.31
7.0.70.0000.01315.32
7.0.60.0120.04217.68
7.0.50.0070.04516.79
7.0.40.0080.02916.89
7.0.30.0220.03216.87
7.0.20.0190.03916.86
7.0.10.0150.04216.89
7.0.00.0050.02516.92
5.6.400.0090.00614.73
5.6.390.0140.00414.34
5.6.380.0070.00714.31
5.6.370.0000.01014.62
5.6.360.0040.01114.43
5.6.350.0000.01514.64
5.6.340.0030.01014.64
5.6.330.0070.00714.75
5.6.320.0040.01114.43
5.6.310.0030.00714.07
5.6.300.0000.01114.58
5.6.290.0040.00814.69
5.6.280.0070.03817.91
5.6.270.0090.00314.21
5.6.260.0030.00614.30
5.6.250.0060.00614.44
5.6.240.0040.00414.41
5.6.230.0000.01214.50
5.6.220.0130.00014.36
5.6.210.0030.03317.43
5.6.200.0050.02716.29
5.6.190.0050.04817.51
5.6.180.0200.04017.31
5.6.170.0160.02917.34
5.6.160.0070.04317.32
5.6.150.0070.02316.37
5.6.140.0080.04016.23
5.6.130.0030.04916.24
5.6.120.0080.02217.63
5.6.110.0110.03417.71
5.6.100.0130.03717.66
5.6.90.0100.04017.62
5.6.80.0050.02517.32
5.6.70.2300.02617.30
5.6.60.0140.00014.32
5.6.50.0040.01214.20
5.6.40.0040.00814.38
5.6.30.0040.00414.28
5.6.20.0000.01214.28
5.6.10.0030.01214.42
5.6.00.0040.01214.38
5.5.380.0000.01114.01
5.5.370.0040.00714.05
5.5.360.0090.00314.27
5.5.350.0020.05017.47
5.5.340.0040.02616.09
5.5.330.0070.03717.29
5.5.320.0230.04017.22
5.5.310.0160.03317.27
5.5.300.0070.04615.98
5.5.290.0050.03816.20
5.5.280.0070.04317.66
5.5.270.0060.02117.42
5.5.260.0100.04217.31
5.5.250.0060.04117.57
5.5.240.0220.03617.28
5.5.230.0080.00414.39
5.5.220.0040.00713.82
5.5.210.0090.00914.05
5.5.200.0080.00414.15
5.5.190.0000.01113.95
5.5.180.0100.00314.23
5.5.170.0060.00614.17
5.5.160.0040.00414.04
5.5.150.0070.00314.06
5.5.140.0030.00614.02
5.5.130.0110.00414.32
5.5.120.0100.00714.37
5.5.110.0060.00614.31
5.5.100.0040.00814.17
5.5.90.0070.00714.27
5.5.80.0030.01214.17
5.5.70.0090.00614.34
5.5.60.0030.01214.23
5.5.50.0040.01113.95
5.5.40.0000.01514.08
5.5.30.0030.00714.29
5.5.20.0100.00714.33
5.5.10.0040.01114.25
5.5.00.0100.00614.07
5.4.450.0130.03015.65
5.4.440.0060.02315.67
5.4.430.0450.02615.61
5.4.420.0200.02815.64
5.4.410.0260.02515.62
5.4.400.0180.02315.53
5.4.390.0150.02415.49
5.4.380.0200.02815.17
5.4.370.0170.03215.19
5.4.360.0200.03015.21
5.4.350.0120.03215.28
5.4.340.0130.03615.16
5.4.330.0060.00311.81
5.4.320.0100.01712.16
5.4.310.0030.02212.16
5.4.300.0060.02112.16
5.4.290.0080.02012.16
5.4.280.0080.02112.11
5.4.270.0040.02212.11
5.4.260.0060.01912.11
5.4.250.0040.02312.11
5.4.240.0040.02512.11
5.4.230.0080.01912.10
5.4.220.0040.02112.10
5.4.210.0060.02012.10
5.4.200.0050.02512.10
5.4.190.0030.02612.10
5.4.180.0040.02112.10
5.4.170.0050.02312.10
5.4.160.0070.02112.11
5.4.150.0010.02312.10
5.4.140.0050.02111.94
5.4.130.0060.01911.94
5.4.120.0060.02011.92
5.4.110.0070.02211.92
5.4.100.0050.02211.91
5.4.90.0070.02111.91
5.4.80.0060.02411.92
5.4.70.0070.02111.91
5.4.60.0080.02711.91
5.4.50.0040.02511.91
5.4.40.0060.02311.90
5.4.30.0040.02311.91
5.4.20.0040.02211.91
5.4.10.0030.02111.91
5.4.00.0050.01911.65
5.3.290.0070.03812.80
5.3.280.0050.03912.71
5.3.270.0090.04812.72
5.3.260.0070.05312.72
5.3.250.0080.04212.72
5.3.240.0080.03512.72
5.3.230.0090.03712.71
5.3.220.0070.04012.68
5.3.210.0050.04012.68
5.3.200.0040.03912.68
5.3.190.0080.03512.68
5.3.180.0070.03612.67
5.3.170.0050.04412.67
5.3.160.0110.04612.68
5.3.150.0080.04112.68
5.3.140.0070.03612.66
5.3.130.0070.03812.66
5.3.120.0080.04412.66
5.3.110.0100.05112.66
5.3.100.0050.04412.13
5.3.90.0060.03812.11
5.3.80.0080.03512.10
5.3.70.0060.03712.10
5.3.60.0060.03612.09
5.3.50.0050.03712.03
5.3.40.0020.04012.04
5.3.30.0060.03811.99
5.3.20.0050.03611.77
5.3.10.0050.03611.75
5.3.00.0070.03711.73
5.2.170.0060.0399.23
5.2.160.0050.0479.23
5.2.150.0060.0319.23
5.2.140.0080.0409.23
5.2.130.0070.0389.18
5.2.120.0100.0369.19
5.2.110.0080.0379.19
5.2.100.0050.0419.18
5.2.90.0080.0389.19
5.2.80.0090.0399.18
5.2.70.0110.0369.18
5.2.60.0080.0399.14
5.2.50.0090.0389.11
5.2.40.0090.0319.09
5.2.30.0060.0299.05
5.2.20.0050.0329.05
5.2.10.0030.0318.96
5.2.00.0070.0278.82
5.1.60.0020.0268.11
5.1.50.0020.0288.10
5.1.40.0020.0278.08
5.1.30.0020.0288.43
5.1.20.0040.0278.45
5.1.10.0030.0278.18
5.1.00.0020.0288.18
5.0.50.0030.0256.64
5.0.40.0050.0186.46
5.0.30.0020.0336.27
5.0.20.0040.0206.24
5.0.10.0060.0216.22
5.0.00.0060.0286.21
4.4.90.0050.0174.78
4.4.80.0050.0204.76
4.4.70.0040.0214.76
4.4.60.0020.0164.76
4.4.50.0030.0154.77
4.4.40.0030.0254.71
4.4.30.0030.0184.76
4.4.20.0010.0174.84
4.4.10.0010.0174.85
4.4.00.0030.0264.76
4.3.110.0040.0154.67
4.3.100.0010.0174.66
4.3.90.0030.0144.63
4.3.80.0030.0244.58
4.3.70.0030.0144.63
4.3.60.0060.0114.63
4.3.50.0030.0154.63
4.3.40.0040.0234.53
4.3.30.0020.0163.31
4.3.20.0030.0213.29
4.3.10.0020.0153.25
4.3.00.0030.01316.72

preferences:
35.47 ms | 400 KiB | 5 Q