3v4l.org

run code in 300+ PHP versions simultaneously
<?php mb_internal_encoding('UTF-8'); echo 'Subject: ', mb_encode_mimeheader('&rsquo;', '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)
8.3.60.0120.00318.11
8.3.50.0100.01122.04
8.3.40.0000.01418.51
8.3.30.0120.00619.02
8.3.20.0080.00020.16
8.3.10.0050.00320.40
8.3.00.0040.00419.25
8.2.180.0140.00716.38
8.2.170.0100.00722.96
8.2.160.0070.00720.39
8.2.150.0050.00324.18
8.2.140.0000.00824.66
8.2.130.0000.00726.16
8.2.120.0000.00722.09
8.2.110.0090.00020.59
8.2.100.0040.00817.78
8.2.90.0000.00719.17
8.2.80.0000.00817.97
8.2.70.0090.00017.38
8.2.60.0040.00417.80
8.2.50.0000.00818.07
8.2.40.0000.00718.09
8.2.30.0000.00817.96
8.2.20.0040.00417.67
8.2.10.0050.00317.84
8.2.00.0040.00417.53
8.1.280.0140.00425.92
8.1.270.0000.00822.14
8.1.260.0020.00526.35
8.1.250.0050.00328.09
8.1.240.0030.00621.96
8.1.230.0070.00420.91
8.1.220.0000.00817.74
8.1.210.0050.00218.77
8.1.200.0030.00717.10
8.1.190.0000.00817.10
8.1.180.0040.00418.10
8.1.170.0070.00018.59
8.1.160.0040.00421.96
8.1.150.0040.00418.86
8.1.140.0070.00017.30
8.1.130.0050.00317.71
8.1.120.0040.00317.47
8.1.110.0040.00417.42
8.1.100.0040.00417.38
8.1.90.0050.00217.31
8.1.80.0030.00517.38
8.1.70.0000.00617.39
8.1.60.0050.00317.42
8.1.50.0040.00417.45
8.1.40.0040.00417.30
8.1.30.0000.00817.50
8.1.20.0000.00817.54
8.1.10.0080.00017.46
8.1.00.0000.00817.30
8.0.300.0070.00018.77
8.0.290.0040.00416.75
8.0.280.0020.00518.32
8.0.270.0030.00317.25
8.0.260.0030.00317.23
8.0.250.0040.00416.94
8.0.240.0000.00616.97
8.0.230.0000.00716.89
8.0.220.0000.00716.89
8.0.210.0030.00316.85
8.0.200.0000.00716.88
8.0.190.0000.00716.89
8.0.180.0000.00816.86
8.0.170.0040.00416.86
8.0.160.0070.00016.76
8.0.150.0000.00816.80
8.0.140.0040.00416.77
8.0.130.0000.00613.25
8.0.120.0050.00316.76
8.0.110.0000.00716.82
8.0.100.0030.00516.65
8.0.90.0040.00416.68
8.0.80.0120.00316.88
8.0.70.0040.00416.84
8.0.60.0070.00016.71
8.0.50.0040.00416.70
8.0.30.0090.01216.93
8.0.20.0090.00917.40
8.0.10.0000.00716.89
8.0.00.0030.01316.65
7.4.330.0050.00015.00
7.4.320.0000.00616.48
7.4.300.0000.00716.45
7.4.290.0030.00316.54
7.4.280.0000.00716.44
7.4.270.0000.00616.45
7.4.260.0000.00716.51
7.4.250.0040.00416.41
7.4.240.0030.00416.46
7.4.230.0040.00416.29
7.4.220.0130.00716.48
7.4.210.0000.01616.42
7.4.200.0070.00016.31
7.4.160.0000.01616.55
7.4.150.0120.00617.40
7.4.140.0090.01017.86
7.4.130.0110.00916.52
7.4.120.0080.00816.35
7.4.110.0160.00016.31
7.4.100.0120.00616.38
7.4.90.0100.01016.32
7.4.80.0230.00719.39
7.4.70.0110.00716.38
7.4.60.0060.01016.49
7.4.50.0000.00916.32
7.4.40.0130.00616.56
7.4.30.0080.01416.35
7.4.00.0040.00414.84
7.3.330.0020.00213.10
7.3.320.0000.00613.13
7.3.310.0000.00716.07
7.3.300.0070.00016.05
7.3.290.0070.01316.15
7.3.280.0090.00716.18
7.3.270.0150.00317.40
7.3.260.0060.01116.16
7.3.250.0140.00416.19
7.3.240.0060.00916.28
7.3.230.0030.01316.39
7.3.210.0090.00916.38
7.3.200.0180.01019.39
7.3.190.0120.00916.41
7.3.180.0120.00316.19
7.3.170.0040.01216.45
7.3.160.0090.00616.23
7.2.330.0110.00716.53
7.2.320.0100.00616.40
7.2.310.0130.01016.39
7.2.300.0090.00616.46
7.2.290.0160.01716.53
7.2.00.0080.00819.05
7.1.100.0000.01018.02
7.1.70.0030.00716.90
7.1.60.0070.01719.32
7.1.50.0150.01116.50
7.1.00.0000.08022.30
7.0.200.0030.00516.67
7.0.140.0100.07021.95
7.0.60.0100.03319.91
7.0.50.0030.09017.90
7.0.40.0030.06020.30
7.0.30.0300.05320.02
7.0.20.0200.04020.20
7.0.10.0100.06720.01
7.0.00.0100.06320.12
5.6.280.0000.07720.98
5.6.210.0130.08320.74
5.6.200.0070.04018.23
5.6.190.0030.08720.58
5.6.180.0100.07320.48
5.6.170.0230.04720.33
5.6.160.0130.07720.49
5.6.150.0070.08018.19
5.6.140.0130.07318.17
5.6.130.0070.05018.18
5.6.120.0070.08020.94
5.6.110.0000.05021.13
5.6.100.0130.07020.92
5.6.90.0070.06321.10
5.6.80.0070.08320.36
5.5.350.0330.07720.43
5.5.340.0070.07317.92
5.5.330.0070.05020.48
5.5.320.0130.06020.24
5.5.310.0200.04020.28
5.5.300.0030.08717.92
5.5.290.0070.06017.91
5.5.280.0070.06020.64
5.5.270.0100.07720.95
5.5.260.0070.06020.86
5.5.250.0070.08020.65
5.5.240.0100.06020.22
5.4.450.0230.05019.27
5.4.440.0570.04719.46
5.4.430.0670.03019.17
5.4.420.0830.00019.52
5.4.410.0630.00019.34
5.4.400.0600.00019.01
5.4.390.0630.00019.06
5.4.380.0630.00019.21
5.4.370.0730.00019.05
5.4.360.0630.00019.16
5.4.350.0630.00018.98
5.4.340.0630.00019.16
5.4.320.0060.04412.45
5.4.310.0080.03612.45
5.4.300.0070.03812.45
5.4.290.0050.03812.45
5.4.280.0060.04112.35
5.4.270.0070.03512.34
5.4.260.0080.03612.34
5.4.250.0030.04012.34
5.4.240.0060.03512.34
5.4.230.0090.03512.34
5.4.220.0070.03612.34
5.4.210.0070.03512.34
5.4.200.0090.03612.34
5.4.190.0060.03612.33
5.4.180.0050.03612.34
5.4.170.0050.03712.34
5.4.160.0070.03412.34
5.4.150.0050.03812.34
5.4.140.0070.03912.02
5.4.130.0060.03512.01
5.4.120.0050.03611.96
5.4.110.0060.04211.96
5.4.100.0060.03411.96
5.4.90.0050.04011.96
5.4.80.0070.03611.96
5.4.70.0050.03511.96
5.4.60.0070.03711.96
5.4.50.0070.04011.96
5.4.40.0070.03411.95
5.4.30.0040.03711.95
5.4.20.0040.03711.95
5.4.10.0050.04711.95
5.4.00.0070.03811.43
5.3.290.0040.04312.80
5.3.280.0070.03612.70
5.3.270.0040.04012.72
5.3.260.0070.04012.72
5.3.250.0090.04312.72
5.3.240.0030.03912.72
5.3.230.0060.03712.71
5.3.220.0070.04112.68
5.3.210.0040.04512.68
5.3.200.0050.03912.68
5.3.190.0110.03512.68
5.3.180.0070.03612.67
5.3.170.0070.03512.67
5.3.160.0060.03712.67
5.3.150.0060.03612.68
5.3.140.0060.03612.66
5.3.130.0060.04112.66
5.3.120.0050.04012.66
5.3.110.0060.04012.66
5.3.100.0020.04212.12
5.3.90.0060.03712.08
5.3.80.0050.03812.08
5.3.70.0050.03812.07
5.3.60.0060.03612.06
5.3.50.0050.03712.00
5.3.40.0050.03712.00
5.3.30.0060.03511.94
5.3.20.0060.03711.72
5.3.10.0110.03411.69
5.3.00.0050.04111.67
5.2.170.0040.0339.17
5.2.160.0020.0329.18
5.2.150.0060.0339.18
5.2.140.0040.0369.17
5.2.130.0040.0349.14
5.2.120.0020.0309.13
5.2.110.0090.0259.14
5.2.100.0050.0279.14
5.2.90.0040.0299.14
5.2.80.0060.0299.13
5.2.70.0040.0309.13
5.2.60.0030.0319.09
5.2.50.0010.0349.05
5.2.40.0040.0299.03
5.2.30.0040.0309.01
5.2.20.0040.0299.00
5.2.10.0050.0278.91
5.2.00.0050.0288.77
5.1.60.0030.0268.05
5.1.50.0040.0258.06
5.1.40.0020.0278.04
5.1.30.0040.0268.39
5.1.20.0050.0388.41
5.1.10.0070.0328.13
5.1.00.0050.0258.14
5.0.50.0040.0216.61
5.0.40.0050.0206.47
5.0.30.0040.0366.29
5.0.20.0050.0216.25
5.0.10.0040.0256.23
5.0.00.0080.0296.22
4.4.90.0050.0174.78
4.4.80.0040.0194.76
4.4.70.0020.0174.76
4.4.60.0040.0144.76
4.4.50.0040.0144.77
4.4.40.0010.0274.71
4.4.30.0000.0194.75
4.4.20.0030.0184.84
4.4.10.0040.0144.84
4.4.00.0010.0264.75
4.3.110.0030.0154.67
4.3.100.0020.0164.67
4.3.90.0020.0164.63
4.3.80.0050.0234.59
4.3.70.0040.0134.63
4.3.60.0050.0124.63
4.3.50.0010.0174.62
4.3.40.0030.0234.54
4.3.30.0000.0183.28
4.3.20.0020.0163.26
4.3.10.0030.0163.21
4.3.00.0070.01313.59

preferences:
50.86 ms | 401 KiB | 5 Q