3v4l.org

run code in 300+ PHP versions simultaneously
<?php mb_internal_encoding('UTF-8'); echo 'Subject: ', mb_encode_mimeheader('–', '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)
8.3.60.0080.00818.18
8.3.50.0100.00721.92
8.3.40.0070.00718.85
8.3.30.0150.00618.81
8.3.20.0030.00520.21
8.3.10.0040.00421.96
8.3.00.0050.00322.50
8.2.180.0070.01516.32
8.2.170.0140.00322.96
8.2.160.0070.00720.98
8.2.150.0000.01524.18
8.2.140.0070.00724.66
8.2.130.0040.01126.16
8.2.120.0040.01219.36
8.2.110.0100.00020.52
8.2.100.0110.00017.85
8.2.90.0000.00818.22
8.2.80.0000.00817.97
8.2.70.0030.00617.38
8.2.60.0030.00617.80
8.2.50.0040.00418.07
8.2.40.0030.00518.08
8.2.30.0000.00717.86
8.2.20.0070.00017.48
8.2.10.0040.00417.47
8.2.00.0060.00317.60
8.1.280.0270.00025.92
8.1.270.0080.00022.14
8.1.260.0070.00026.35
8.1.250.0070.00028.09
8.1.240.0080.00022.10
8.1.230.0040.00721.05
8.1.220.0080.00017.74
8.1.210.0080.00019.04
8.1.200.0060.00317.23
8.1.190.0030.00617.28
8.1.180.0060.00318.10
8.1.170.0000.00818.59
8.1.160.0000.00722.05
8.1.150.0030.00618.44
8.1.140.0000.00717.25
8.1.130.0000.00617.67
8.1.120.0000.00817.37
8.1.110.0040.00417.28
8.1.100.0050.00217.29
8.1.90.0040.00417.26
8.1.80.0040.00417.25
8.1.70.0030.00317.39
8.1.60.0030.00617.52
8.1.50.0040.00417.54
8.1.40.0040.00417.42
8.1.30.0000.00817.57
8.1.20.0050.00317.55
8.1.10.0040.00417.51
8.1.00.0080.00017.32
8.0.300.0030.00620.03
8.0.290.0000.00717.05
8.0.280.0030.00318.45
8.0.270.0000.00717.16
8.0.260.0030.00318.45
8.0.250.0000.00716.91
8.0.240.0070.00016.95
8.0.230.0070.00016.76
8.0.220.0030.00316.73
8.0.210.0030.00316.73
8.0.200.0000.00616.84
8.0.190.0000.00716.89
8.0.180.0040.00416.74
8.0.170.0080.00016.88
8.0.160.0070.00016.80
8.0.150.0030.00316.67
8.0.140.0000.00716.80
8.0.130.0030.00313.22
8.0.120.0070.00016.84
8.0.110.0000.00816.72
8.0.100.0040.00416.87
8.0.90.0070.00016.67
8.0.80.0040.01116.84
8.0.70.0050.00316.66
8.0.60.0040.00416.82
8.0.50.0070.00016.70
8.0.30.0120.00817.16
8.0.20.0110.00817.40
8.0.10.0070.00016.82
8.0.00.0090.01416.74
7.4.330.0020.00215.00
7.4.320.0000.00616.54
7.4.300.0030.00316.48
7.4.290.0000.00716.53
7.4.280.0030.00316.52
7.4.270.0000.00716.36
7.4.260.0030.00316.52
7.4.250.0040.00416.43
7.4.240.0040.00316.35
7.4.230.0000.00716.59
7.4.220.0120.00616.62
7.4.210.0070.00716.48
7.4.200.0030.00616.32
7.4.190.0040.00416.64
7.4.160.0070.01116.35
7.4.150.0140.00317.40
7.4.140.0130.00417.86
7.4.130.0120.00516.37
7.4.120.0100.00916.50
7.4.110.0100.00716.28
7.4.100.0130.00916.60
7.4.90.0060.01216.38
7.4.80.0070.01116.65
7.4.70.0100.00716.49
7.4.60.0100.00716.42
7.4.50.0040.00416.36
7.4.40.0070.00722.77
7.4.30.0090.00616.38
7.4.00.0030.01415.01
7.3.330.0000.00613.04
7.3.320.0030.00313.13
7.3.310.0040.00416.18
7.3.300.0000.00616.17
7.3.290.0110.00716.22
7.3.280.0080.00616.18
7.3.270.0100.01017.40
7.3.260.0110.00616.54
7.3.250.0090.01016.20
7.3.240.0140.00416.30
7.3.230.0090.00916.42
7.3.210.0090.00916.15
7.3.200.0120.00919.39
7.3.190.0080.01216.49
7.3.180.0060.01016.34
7.3.170.0060.01516.27
7.3.160.0080.00816.30
7.3.120.0090.00614.75
7.2.330.0090.00916.42
7.2.320.0170.00016.28
7.2.310.0060.01216.42
7.2.300.0140.00316.44
7.2.290.0150.00816.56
7.1.70.0000.00717.03
7.1.60.0100.01319.82
7.1.50.0150.00934.82
7.1.00.0100.07022.57
7.0.200.0040.00716.56
7.0.140.0030.07021.93
7.0.60.0100.06719.91
7.0.50.0070.06717.80
7.0.40.0070.04320.24
7.0.30.0570.08020.34
7.0.20.0270.07020.12
7.0.10.0030.08720.00
7.0.00.0030.06720.08
5.6.280.0100.06020.89
5.6.210.0030.06020.74
5.6.200.0100.08018.19
5.6.190.0030.06320.32
5.6.180.3100.04720.33
5.6.170.0270.07720.33
5.6.160.0000.04720.54
5.6.150.0000.06718.09
5.6.140.0030.04718.13
5.6.130.0130.05318.18
5.6.120.0100.08321.11
5.6.110.0100.05320.97
5.6.100.0070.08721.02
5.6.90.0070.07321.11
5.6.80.0000.04320.38
5.5.350.0100.06720.33
5.5.340.0030.06717.95
5.5.330.0070.08320.21
5.5.320.0300.07020.18
5.5.310.0270.07720.17
5.5.300.0070.07017.95
5.5.290.0100.07717.91
5.5.280.0030.08720.75
5.5.270.0100.08320.84
5.5.260.0100.08320.75
5.5.250.0100.06320.48
5.5.240.3470.04720.18
5.4.450.0200.03319.57
5.4.440.0070.04319.54
5.4.430.0130.04319.45
5.4.420.0130.04719.57
5.4.410.0170.03718.98
5.4.400.0100.04019.07
5.4.390.0200.03019.06
5.4.380.0230.02718.93
5.4.370.0330.02719.24
5.4.360.0270.07318.92
5.4.350.0200.05319.25
5.4.340.0300.07019.24
5.4.320.0300.08719.13
5.4.310.0370.06318.81
5.4.300.0300.06319.17
5.4.290.0230.07018.93
5.4.280.0200.06718.92
5.4.270.0200.04719.12
5.4.260.0200.05318.91
5.4.250.0270.05718.91
5.4.240.0230.06019.15
5.4.230.0230.07019.21
5.4.220.0230.06019.05
5.4.210.0230.07018.91
5.4.200.0230.04319.13
5.4.190.0270.04319.08
5.4.180.0230.06318.91
5.4.170.0270.07019.23
5.4.160.0400.06719.06
5.4.150.0230.04319.03
5.4.140.0270.06716.20
5.4.130.0200.07316.43
5.4.120.0300.06716.54
5.4.110.0300.06316.21
5.4.100.0270.03716.34
5.4.90.0370.04716.22
5.4.80.0230.06716.32
5.4.70.0100.05016.29
5.4.60.0270.05316.47
5.4.50.0200.05716.45
5.4.40.0130.05716.16
5.4.30.0300.02716.36
5.4.20.0230.04316.32
5.4.10.0270.06316.44
5.4.00.0230.07315.78
5.3.290.0270.06314.61
5.3.280.0330.06314.45
5.3.270.0230.04714.48
5.3.260.0170.07314.53
5.3.250.0130.07714.64
5.3.240.0230.04014.63
5.3.230.0270.04314.43
5.3.220.0230.03714.40
5.3.210.0270.04314.40
5.3.200.0130.06314.42
5.3.190.0270.06314.41
5.3.180.0230.07014.43
5.3.170.0230.06314.40
5.3.160.0200.06714.54
5.3.150.0130.08014.43
5.3.140.0230.05714.53
5.3.130.0170.04314.41
5.3.120.0200.07314.40
5.3.110.0100.05714.44
5.3.100.0230.07313.98
5.3.90.0300.06714.06
5.3.80.0330.05013.95
5.3.70.0270.07013.98
5.3.60.0330.05013.87
5.3.50.0200.06713.99
5.3.40.0230.07313.75
5.3.30.0300.06713.81
5.3.20.0230.06713.64
5.3.10.0200.07013.50
5.3.00.0230.06713.47
5.2.170.0270.03312.19
5.2.160.0230.05012.19
5.2.150.0170.04712.19
5.2.140.0170.06712.19
5.2.130.0230.05712.19
5.2.120.0200.03712.19
5.2.110.0230.06012.19
5.2.100.0130.05012.19
5.2.90.0230.05712.19
5.2.80.0300.05012.19
5.2.70.0200.04312.19
5.2.60.0170.04012.19
5.2.50.0170.06012.19
5.2.40.0100.04012.19
5.2.30.0230.05012.19
5.2.20.0130.04312.19
5.2.10.0130.06312.19
5.2.00.0230.05712.19
5.1.60.0130.04312.19
5.1.50.0170.05012.19
5.1.40.0200.02712.19
5.1.30.0130.05712.19
5.1.20.0170.04012.19
5.1.10.0170.05712.19
5.1.00.0170.05712.19
5.0.50.0100.04012.19
5.0.40.0100.04012.19
5.0.30.0100.05012.19
5.0.20.0100.04012.19
5.0.10.0070.03012.19
5.0.00.0100.06312.19
4.4.90.0100.03312.19
4.4.80.0100.02012.19
4.4.70.0030.02012.19
4.4.60.0100.01712.19
4.4.50.0070.01712.19
4.4.40.0170.04712.19
4.4.30.0030.03012.19
4.4.20.0100.02712.19
4.4.10.0100.03312.19
4.4.00.0100.05012.19
4.3.110.0070.02312.19
4.3.100.0130.02312.19
4.3.90.0070.03012.19
4.3.80.0100.05312.19
4.3.70.0100.03312.19
4.3.60.0170.02312.19
4.3.50.0070.02712.19
4.3.40.0070.04712.19
4.3.30.0030.03012.19
4.3.20.0030.04012.19
4.3.10.0030.03012.19
4.3.00.0030.03712.19

preferences:
46.97 ms | 401 KiB | 5 Q