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)
8.3.60.0070.00716.50
8.3.50.0100.01017.22
8.3.40.0090.00618.89
8.3.30.0100.00318.60
8.3.20.0080.00018.65
8.3.10.0070.00318.59
8.3.00.0060.00319.25
8.2.180.0130.00916.32
8.2.170.0120.00322.96
8.2.160.0070.01020.52
8.2.150.0070.00024.18
8.2.140.0080.00024.66
8.2.130.0050.00226.16
8.2.120.0110.00418.58
8.2.110.0060.00321.04
8.2.100.0070.00317.61
8.2.90.0030.00621.11
8.2.80.0070.00019.32
8.2.70.0040.00417.50
8.2.60.0000.00817.80
8.2.50.0000.00918.07
8.2.40.0040.00418.09
8.2.30.0000.00717.91
8.2.20.0040.00417.54
8.2.10.0000.00817.54
8.2.00.0000.00717.62
8.1.280.0140.00325.92
8.1.270.0080.00024.66
8.1.260.0030.00626.35
8.1.250.0040.00428.09
8.1.240.0090.00022.42
8.1.230.0080.00320.89
8.1.220.0080.00017.74
8.1.210.0040.00418.79
8.1.200.0030.00616.97
8.1.190.0050.00217.27
8.1.180.0040.00418.10
8.1.170.0090.00018.86
8.1.160.0000.00718.82
8.1.150.0030.00618.61
8.1.140.0050.00317.39
8.1.130.0030.00317.75
8.1.120.0000.00817.29
8.1.110.0000.00817.36
8.1.100.0040.00417.25
8.1.90.0000.00817.28
8.1.80.0030.00417.40
8.1.70.0040.00417.41
8.1.60.0080.00017.44
8.1.50.0000.00817.34
8.1.40.0030.00617.48
8.1.30.0050.00217.50
8.1.20.0000.00817.57
8.1.10.0040.00417.48
8.1.00.0040.00417.43
8.0.300.0080.00020.03
8.0.290.0040.00416.75
8.0.280.0070.00018.36
8.0.270.0000.00717.29
8.0.260.0030.00316.70
8.0.250.0000.00716.96
8.0.240.0070.00016.93
8.0.230.0000.00716.75
8.0.220.0030.00316.73
8.0.210.0040.00416.72
8.0.200.0030.00316.92
8.0.190.0000.00916.79
8.0.180.0050.00316.86
8.0.170.0050.00416.86
8.0.160.0040.00416.68
8.0.150.0040.00416.77
8.0.140.0030.00616.82
8.0.130.0030.00313.29
8.0.120.0060.00316.73
8.0.110.0000.00816.78
8.0.100.0040.00416.86
8.0.90.0050.00216.94
8.0.80.0090.00616.79
8.0.70.0000.00716.83
8.0.60.0000.00716.76
8.0.50.0070.00016.61
8.0.30.0080.01116.93
8.0.20.0050.01417.02
8.0.10.0070.00016.84
8.0.00.0080.01016.70
7.4.330.0050.00012.83
7.4.320.0080.00016.42
7.4.300.0000.00616.57
7.4.290.0030.00316.53
7.4.280.0060.00316.52
7.4.270.0000.00716.41
7.4.260.0080.00013.16
7.4.250.0000.00916.36
7.4.240.0020.00516.44
7.4.230.0000.00716.41
7.4.220.0150.00916.37
7.4.210.0060.00916.59
7.4.200.0070.00016.40
7.4.190.0000.00816.57
7.4.160.0070.01716.63
7.4.150.0080.01116.48
7.4.140.0110.00716.45
7.4.130.0150.00316.39
7.4.120.0050.01216.35
7.4.110.0070.01116.63
7.4.100.0110.01216.29
7.4.90.0000.01816.34
7.4.80.0060.01019.39
7.4.70.0100.00716.36
7.4.60.0130.00316.40
7.4.50.0070.00716.55
7.4.40.0030.01016.43
7.4.30.0060.00916.36
7.4.00.0060.00614.98
7.3.330.0000.00613.08
7.3.320.0050.00013.04
7.3.310.0040.00416.24
7.3.300.0030.00316.03
7.3.290.0090.00616.22
7.3.280.0080.01016.17
7.3.270.0160.00016.28
7.3.260.0090.00916.38
7.3.250.0090.01216.42
7.3.240.0090.01416.11
7.3.230.0140.00416.43
7.3.210.0150.00616.25
7.3.200.0100.00716.36
7.3.190.0100.00916.43
7.3.180.0000.01516.38
7.3.170.0090.00616.31
7.3.160.0030.01316.43
7.3.120.0030.01014.45
7.2.330.0110.00716.39
7.2.320.0100.00716.46
7.2.310.0050.01416.35
7.2.300.0120.00416.36
7.2.290.0060.00916.31
7.2.00.0070.01019.36
7.1.100.0070.01416.16
7.1.70.0030.00816.99
7.1.60.0090.01619.40
7.1.50.0090.01316.70
7.1.00.0030.06722.51
7.0.200.0350.00714.79
7.0.140.0030.07322.00
7.0.120.0000.07022.04
7.0.60.0270.06019.93
7.0.50.0000.04317.81
7.0.40.0170.03017.69
7.0.30.0000.04317.70
7.0.20.0030.04017.79
7.0.10.0000.04317.75
7.0.00.0030.04017.69
5.6.210.0170.07720.47
5.6.200.0030.04018.11
5.6.190.0030.04018.19
5.6.180.0030.04018.11
5.6.170.0030.04018.09
5.6.160.0000.04318.11
5.6.150.0070.03718.18
5.6.140.0100.03318.14
5.6.130.0030.04718.22
5.6.120.0070.03718.20
5.6.110.0030.04018.10
5.6.100.0030.05718.11
5.6.90.0030.04318.20
5.6.80.0000.04017.48
5.6.70.0100.07017.53
5.6.60.0030.07717.54
5.6.50.0000.04317.47
5.6.40.0030.06317.57
5.6.30.0100.03317.53
5.6.20.0100.05017.57
5.6.10.0070.05017.50
5.6.00.0070.07717.60
5.5.350.0030.07020.46
5.5.340.0030.03717.92
5.5.330.0070.03718.02
5.5.320.0000.04018.01
5.5.310.0000.04317.89
5.5.300.0030.03717.91
5.5.290.0070.03717.97
5.5.280.0100.03317.98
5.5.270.0030.04718.01
5.5.260.0000.04317.99
5.5.250.0030.06017.77
5.5.240.0100.05317.37
5.5.230.0000.04317.25
5.5.220.0030.04717.38
5.5.210.0030.03717.25
5.5.200.0170.07317.27
5.5.190.0070.07717.36
5.5.180.0070.04717.23
5.5.160.0070.05717.32
5.5.150.0030.05317.36
5.5.140.0070.04017.32
5.5.130.0030.08017.30
5.5.120.0100.06717.32
5.5.110.0170.04717.26
5.5.100.0030.07317.26
5.5.90.0030.04017.13
5.5.80.0030.04717.14
5.5.70.0100.07717.22
5.5.60.0070.07317.15
5.5.50.0100.07317.15
5.5.40.0070.07317.11
5.5.30.0030.07317.22
5.5.20.0100.07317.18
5.5.10.0170.06717.25
5.5.00.0070.04017.11
5.4.450.0030.03719.36
5.4.440.0100.03019.22
5.4.430.0070.03719.46
5.4.420.0030.04019.31
5.4.410.0000.04719.21
5.4.400.0030.04018.97
5.4.390.0070.08019.20
5.4.380.0130.06718.99
5.4.370.0070.08018.98
5.4.360.0070.03319.03
5.4.350.0070.03719.07
5.4.340.0030.05719.01
5.4.320.0030.06018.82
5.4.310.0100.04719.04
5.4.300.0100.07318.96
5.4.290.0070.04319.12
5.4.280.0030.05718.96
5.4.270.0130.04019.12
5.4.260.0200.06319.02
5.4.250.0100.06018.98
5.4.240.0100.07318.98
5.4.230.0130.07019.06
5.4.220.0030.07718.91
5.4.210.0030.08018.97
5.4.200.0030.07719.20
5.4.190.0100.07319.00
5.4.180.0070.05319.20
5.4.170.0070.04319.02
5.4.160.0030.05019.14
5.4.150.0030.08719.10
5.4.140.0170.06716.25
5.4.130.0030.04016.33
5.4.120.0000.04316.34
5.4.110.0030.07716.53
5.4.100.0170.06316.18
5.4.90.0070.07316.35
5.4.80.0100.06316.26
5.4.70.0130.06016.32
5.4.60.0130.07016.25
5.4.50.0030.06016.50
5.4.40.0070.04316.20
5.4.30.0030.04316.26
5.4.20.0070.07016.36
5.4.10.0030.08016.17
5.4.00.0100.07315.61
5.3.290.0070.07314.63
5.3.280.0030.05714.57
5.3.270.0100.06014.54
5.3.260.0130.07014.54
5.3.250.0030.06314.45
5.3.240.0070.05014.46
5.3.230.0100.03314.57
5.3.220.0030.07714.38
5.3.210.0170.06314.54
5.3.200.0070.06014.51
5.3.190.0100.07314.54
5.3.180.0070.06314.57
5.3.170.0030.06314.33
5.3.160.0070.06714.52
5.3.150.0070.07014.34
5.3.140.0100.07014.50
5.3.130.0070.06014.32
5.3.120.0030.08014.51
5.3.110.0130.04314.37
5.3.100.0000.04014.00
5.3.90.0070.05013.84
5.3.80.0000.04013.96
5.3.70.0130.07013.95
5.3.60.0070.05313.96
5.3.50.0100.07013.70
5.3.40.0030.05313.80
5.3.30.0070.04713.90
5.3.20.0170.06713.63
5.3.10.0000.04013.61
5.3.00.0130.06013.55
5.2.170.0100.06011.12
5.2.160.0030.06710.96
5.2.150.0070.04310.96
5.2.140.0030.06310.97
5.2.130.0100.05711.10
5.2.120.0000.05310.88
5.2.110.0000.05710.92
5.2.100.0030.06311.07
5.2.90.0070.04011.01
5.2.80.0030.03311.07
5.2.70.0070.02710.86
5.2.60.0030.03711.03
5.2.50.0070.02711.05
5.2.40.0030.05710.79
5.2.30.0070.03310.93
5.2.20.0100.03310.91
5.2.10.0030.06010.86
5.2.00.0000.03710.74
5.1.60.0070.0509.93
5.1.50.0030.0379.99
5.1.40.0070.04010.11
5.1.30.0030.04710.36
5.1.20.0000.05710.32
5.1.10.0070.05710.01
5.1.00.0070.03710.05
5.0.50.0000.0339.01
5.0.40.0030.0309.01
5.0.30.0030.0409.01
5.0.20.0130.0379.01
5.0.10.0000.0379.01
5.0.00.0030.0639.01
4.4.90.0000.0179.01
4.4.80.0000.0179.01
4.4.70.0000.0179.01
4.4.60.0070.0209.01
4.4.50.0030.0179.01
4.4.40.0000.0509.01
4.4.30.0000.0339.01
4.4.20.0030.0209.01
4.4.10.0000.0379.01
4.4.00.0070.0439.01
4.3.110.0030.0179.01
4.3.100.0070.0279.01
4.3.90.0000.0339.01
4.3.80.0000.0379.01
4.3.70.0000.0339.01
4.3.60.0000.0379.01
4.3.50.0030.0339.01
4.3.40.0000.0579.01
4.3.30.0030.0339.01
4.3.20.0030.0339.01
4.3.10.0000.0409.01
4.3.00.0000.0239.01

preferences:
54.18 ms | 401 KiB | 5 Q