3v4l.org

run code in 300+ PHP versions simultaneously
<?php mb_internal_encoding('UTF-8'); echo 'Subject: ', mb_encode_mimeheader('รถ', 'UTF-8', 'B');

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)
8.3.70.0040.01418.43
8.3.60.0000.01416.49
8.3.50.0090.00921.93
8.3.40.0150.00018.75
8.3.30.0070.00718.82
8.3.20.0070.00020.02
8.3.10.0040.00423.59
8.3.00.0040.00419.38
8.2.180.0000.01518.29
8.2.170.0060.00922.96
8.2.160.0030.01320.52
8.2.150.0090.00024.18
8.2.140.0040.00424.66
8.2.130.0100.00326.16
8.2.120.0070.00022.20
8.2.110.0060.00322.21
8.2.100.0130.00317.59
8.2.90.0030.00619.27
8.2.80.0090.00017.97
8.2.70.0030.00617.50
8.2.60.0030.00517.66
8.2.50.0040.00418.07
8.2.40.0030.00619.76
8.2.30.0000.00718.08
8.2.20.0040.00417.71
8.2.10.0040.00417.93
8.2.00.0060.00317.58
8.1.280.0140.00425.92
8.1.270.0070.01323.85
8.1.260.0040.00426.35
8.1.250.0060.00328.09
8.1.240.0030.00623.85
8.1.230.0080.00319.02
8.1.220.0000.00817.74
8.1.210.0030.00618.77
8.1.200.0040.00417.11
8.1.190.0000.00817.23
8.1.180.0030.00618.10
8.1.170.0030.00618.47
8.1.160.0000.00721.92
8.1.150.0080.00018.50
8.1.140.0040.00417.39
8.1.130.0000.00717.63
8.1.120.0030.00317.38
8.1.110.0080.00017.43
8.1.100.0080.00017.39
8.1.90.0030.00317.48
8.1.80.0040.00417.28
8.1.70.0000.00717.33
8.1.60.0040.00417.41
8.1.50.0060.00317.36
8.1.40.0000.01117.43
8.1.30.0030.00517.57
8.1.20.0000.00717.57
8.1.10.0000.00817.36
8.1.00.0070.00017.44
8.0.300.0000.00718.77
8.0.290.0030.00617.18
8.0.280.0070.00018.39
8.0.270.0000.00717.25
8.0.260.0030.00317.26
8.0.250.0050.00316.85
8.0.240.0030.00316.95
8.0.230.0070.00316.86
8.0.220.0000.00716.82
8.0.210.0000.00716.75
8.0.200.0030.00316.81
8.0.190.0040.00416.77
8.0.180.0000.00716.71
8.0.170.0000.00816.73
8.0.160.0030.00416.69
8.0.150.0000.00716.74
8.0.140.0040.00416.78
8.0.130.0030.00313.24
8.0.120.0000.00816.67
8.0.110.0070.00016.87
8.0.100.0000.00716.85
8.0.90.0040.00416.68
8.0.80.0140.00716.82
8.0.70.0030.00516.71
8.0.60.0030.00316.88
8.0.50.0030.00516.64
8.0.30.0110.00717.03
8.0.20.0130.00617.40
8.0.10.0090.00016.94
8.0.00.0160.00616.59
7.4.330.0000.00715.00
7.4.320.0030.00316.53
7.4.300.0060.00016.50
7.4.290.0070.00016.39
7.4.280.0050.00516.40
7.4.270.0070.00016.39
7.4.260.0000.00716.48
7.4.250.0070.00016.38
7.4.240.0020.00516.49
7.4.230.0000.00716.42
7.4.220.0130.00616.62
7.4.210.0070.00816.42
7.4.200.0040.00416.50
7.4.190.0000.00816.62
7.4.160.0070.00716.50
7.4.150.0150.00317.40
7.4.140.0080.01017.86
7.4.130.0070.01016.29
7.4.120.0050.01216.34
7.4.110.0150.00616.48
7.4.100.0030.01416.27
7.4.90.0170.00016.43
7.4.80.0110.01119.39
7.4.70.0090.01216.29
7.4.60.0170.00016.31
7.4.50.0000.00516.29
7.4.40.0120.00916.49
7.4.30.0070.01016.32
7.4.00.0030.01015.00
7.3.330.0050.00012.98
7.3.320.0020.00213.10
7.3.310.0000.00816.12
7.3.300.0000.00716.18
7.3.290.0090.00416.30
7.3.280.0070.00916.31
7.3.270.0080.00917.40
7.3.260.0130.01016.22
7.3.250.0190.00216.29
7.3.240.0120.00316.36
7.3.230.0070.01016.39
7.3.210.0120.00616.27
7.3.200.0100.00719.39
7.3.190.0180.00416.28
7.3.180.0090.00616.09
7.3.170.0080.00816.27
7.3.160.0090.00616.13
7.3.120.0030.00914.84
7.2.330.0070.01016.48
7.2.320.0090.00916.63
7.2.310.0100.00716.42
7.2.300.0120.00416.66
7.2.290.0070.01116.66
7.2.00.0030.01019.32
7.1.100.0030.00917.71
7.1.70.0000.00717.15
7.1.60.0090.00619.46
7.1.50.0130.00634.72
7.1.00.0000.08022.38
7.0.200.0000.01016.34
7.0.140.0030.07322.20
7.0.100.0230.06019.97
7.0.90.0170.07319.92
7.0.80.0070.05020.13
7.0.70.0070.04319.88
7.0.60.0000.10019.87
7.0.50.0100.07720.31
7.0.40.0070.08720.05
7.0.30.0100.06320.08
7.0.20.0070.04320.08
7.0.10.0030.04720.13
7.0.00.0070.08320.07
5.6.280.0000.07721.02
5.6.250.0030.05320.60
5.6.240.0070.07020.71
5.6.230.0030.07320.68
5.6.220.0070.07720.48
5.6.210.0130.07020.61
5.6.200.0070.07721.04
5.6.190.0000.09320.95
5.6.180.0100.08021.05
5.6.170.0170.08021.07
5.6.160.0100.05721.07
5.6.150.0100.07720.95
5.6.140.0070.04721.13
5.6.130.0130.06321.09
5.6.120.0070.06021.05
5.6.110.0100.08320.97
5.6.100.0030.05720.91
5.6.90.0130.04720.93
5.6.80.0100.07320.33
5.6.70.0200.07020.38
5.6.60.0100.07320.38
5.6.50.0100.03720.49
5.6.40.0100.04720.28
5.6.30.0100.04020.34
5.6.20.0000.06320.32
5.6.10.0100.07320.37
5.6.00.0000.04720.38
5.5.380.0100.04320.38
5.5.370.0130.05020.41
5.5.360.0070.04320.32
5.5.350.0100.07320.46
5.5.340.0070.04320.77
5.5.330.0200.07020.86
5.5.320.0130.07320.85
5.5.310.0170.04020.82
5.5.300.0130.06020.85
5.5.290.0030.04720.79
5.5.280.0130.03720.77
5.5.270.0070.06320.72
5.5.260.0070.04320.90
5.5.250.0070.07320.63
5.5.240.0100.07720.02
5.5.230.0130.04320.20
5.5.220.0000.04720.27
5.5.210.0100.08720.13
5.5.200.0270.04020.20
5.5.190.0130.08320.10
5.5.180.0070.06020.14
5.5.160.0170.06720.17
5.5.150.0030.04720.24
5.5.140.0070.05720.21
5.5.130.0230.07320.18
5.5.120.0170.04020.17
5.5.110.0030.08020.23
5.5.100.0130.07720.07
5.5.90.0030.08019.93
5.5.80.0100.07320.15
5.5.70.0070.05720.02
5.5.60.0130.04320.05
5.5.50.0070.05020.08
5.5.40.0030.04320.04
5.5.30.0130.07319.95
5.5.20.0070.05719.90
5.5.10.0070.04319.99
5.5.00.0070.04320.07
5.4.450.0130.07319.42
5.4.440.0130.06319.44
5.4.430.0100.04019.45
5.4.420.0100.03719.35
5.4.410.0030.04319.25
5.4.400.0100.08319.08
5.4.390.0070.07319.06
5.4.380.0070.04019.03
5.4.370.0030.04719.14
5.4.360.0000.05019.09
5.4.350.0130.03319.05
5.4.340.0000.04719.13
5.4.320.0100.03318.98
5.4.310.0070.04019.05
5.4.300.0170.07318.96
5.4.290.0100.06718.78
5.4.280.0170.06719.05
5.4.270.0000.04319.07
5.4.260.0200.07019.02
5.4.250.0100.03319.18
5.4.240.0100.07019.02
5.4.230.0170.07019.04
5.4.220.0100.07719.07
5.4.210.0000.04719.14
5.4.200.0000.08318.93
5.4.190.0030.07318.97
5.4.180.0100.03318.77
5.4.170.0170.06719.22
5.4.160.0030.05019.10
5.4.150.0100.07719.11
5.4.140.0030.04716.29
5.4.130.0030.06316.27
5.4.120.0100.06016.36
5.4.110.0100.05316.44
5.4.100.0130.06716.42
5.4.90.0070.03716.24
5.4.80.0070.04716.29
5.4.70.0000.04016.31
5.4.60.0030.07016.42
5.4.50.0000.05316.37
5.4.40.0070.03316.36
5.4.30.0170.06316.30
5.4.20.0070.06316.22
5.4.10.0030.04716.18
5.4.00.0030.04315.71
5.3.290.0100.07314.60
5.3.280.0030.04714.57
5.3.270.0030.04014.58
5.3.260.0100.08314.61
5.3.250.0030.09014.59
5.3.240.0070.04714.59
5.3.230.0070.05314.58
5.3.220.0030.07714.38
5.3.210.0070.08314.51
5.3.200.0100.05714.54
5.3.190.0000.05714.43
5.3.180.0070.03014.46
5.3.170.0100.07714.54
5.3.160.0070.07014.42
5.3.150.0070.03714.56
5.3.140.0100.05314.51
5.3.130.0070.07714.36
5.3.120.0130.07014.53
5.3.110.0030.08014.39
5.3.100.0100.06013.98
5.3.90.0000.07714.01
5.3.80.0100.06014.00
5.3.70.0000.04013.95
5.3.60.0070.03313.76
5.3.50.0130.06713.92
5.3.40.0100.07313.84
5.3.30.0030.03713.76
5.3.20.0030.03713.68
5.3.10.0100.07013.59
5.3.00.0070.05313.59
5.2.170.0070.04711.19
5.2.160.0070.04011.00
5.2.150.0070.04311.18
5.2.140.0030.06010.96
5.2.130.0000.03010.98
5.2.120.0070.06011.06
5.2.110.0070.05711.16
5.2.100.0030.06310.92
5.2.90.0000.03311.02
5.2.80.0070.06011.04
5.2.70.0000.02710.91
5.2.60.0000.02710.99
5.2.50.0070.02310.83
5.2.40.0030.06311.00
5.2.30.0070.02311.04
5.2.20.0030.03310.95
5.2.10.0030.02710.86
5.2.00.0000.03010.63
5.1.60.0000.0479.97
5.1.50.0000.0539.97
5.1.40.0000.0309.96
5.1.30.0030.05710.38
5.1.20.0100.05010.37
5.1.10.0000.05710.14
5.1.00.0030.05010.11
5.0.50.0000.0279.24
5.0.40.0000.0379.24
5.0.30.0000.0279.24
5.0.20.0000.0209.24
5.0.10.0000.0279.24
5.0.00.0000.0379.24
4.4.90.0000.0309.24
4.4.80.0100.0279.24
4.4.70.0000.0209.24
4.4.60.0000.0209.24
4.4.50.0000.0209.24
4.4.40.0070.0479.24
4.4.30.0000.0239.24
4.4.20.0000.0279.24
4.4.10.0000.0179.24
4.4.00.0000.0509.24
4.3.110.0070.0339.24
4.3.100.0070.0109.24
4.3.90.0030.0339.24
4.3.80.0030.0509.24
4.3.70.0030.0139.24
4.3.60.0030.0279.24
4.3.50.0030.0409.24
4.3.40.0000.0439.24
4.3.30.0000.0379.24
4.3.20.0000.0339.24
4.3.10.0030.0279.24
4.3.00.0000.0239.24

preferences:
47.74 ms | 401 KiB | 5 Q