3v4l.org

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

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)
8.3.60.0090.00918.30
8.3.50.0090.00921.98
8.3.40.0000.01418.67
8.3.30.0150.00418.84
8.3.20.0000.00720.18
8.3.10.0070.00021.82
8.3.00.0060.00322.43
8.2.180.0090.00618.20
8.2.170.0090.00622.96
8.2.160.0070.00722.13
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0000.00726.16
8.2.120.0000.00817.50
8.2.110.0050.00322.25
8.2.100.0090.00317.59
8.2.90.0000.00719.16
8.2.80.0040.00417.97
8.2.70.0090.00617.25
8.2.60.0080.00317.93
8.2.50.0030.00618.07
8.2.40.0040.00418.03
8.2.30.0000.00718.00
8.2.20.0070.00017.64
8.2.10.0040.00417.55
8.2.00.0040.00417.42
8.1.280.0100.01025.92
8.1.270.0000.00823.91
8.1.260.0020.00226.35
8.1.250.0030.01028.09
8.1.240.0090.00023.83
8.1.230.0040.00719.16
8.1.220.0000.00817.74
8.1.210.0000.00918.77
8.1.200.0040.00417.13
8.1.190.0070.00017.29
8.1.180.0040.00418.10
8.1.170.0070.00318.50
8.1.160.0070.00022.01
8.1.150.0050.00318.47
8.1.140.0040.00417.38
8.1.130.0000.00717.63
8.1.120.0000.00717.37
8.1.110.0040.00417.28
8.1.100.0000.00717.38
8.1.90.0030.00317.41
8.1.80.0030.00317.40
8.1.70.0000.00717.41
8.1.60.0000.00817.47
8.1.50.0040.00417.37
8.1.40.0030.00617.35
8.1.30.0040.00417.38
8.1.20.0040.00417.44
8.1.10.0020.00517.51
8.1.00.0040.00417.51
8.0.300.0030.00318.77
8.0.290.0040.00417.05
8.0.280.0030.00318.42
8.0.270.0000.00817.25
8.0.260.0000.00616.81
8.0.250.0040.00416.95
8.0.240.0030.00316.91
8.0.230.0040.00416.82
8.0.220.0040.00416.70
8.0.210.0000.00716.73
8.0.200.0000.00616.84
8.0.190.0040.00416.91
8.0.180.0040.00416.71
8.0.170.0000.00816.75
8.0.160.0040.00416.81
8.0.150.0030.00316.87
8.0.140.0050.00316.80
8.0.130.0000.00813.28
8.0.120.0050.00316.74
8.0.110.0040.00416.79
8.0.100.0050.00216.83
8.0.90.0030.00416.87
8.0.80.0090.00816.81
8.0.70.0000.00716.85
8.0.60.0040.00416.72
8.0.50.0030.00316.80
8.0.30.0150.00716.84
8.0.20.0160.00317.40
8.0.10.0000.00716.75
8.0.00.0090.01216.62
7.4.330.0000.00515.03
7.4.320.0000.00616.49
7.4.300.0000.00716.47
7.4.290.0000.00816.44
7.4.280.0030.00316.55
7.4.270.0030.00316.41
7.4.260.0000.00716.43
7.4.250.0030.00316.44
7.4.240.0030.00316.46
7.4.230.0030.00316.22
7.4.220.0100.00616.53
7.4.210.0090.00616.46
7.4.200.0000.00716.32
7.4.190.0070.00016.56
7.4.160.0110.00616.40
7.4.150.0110.00717.40
7.4.140.0050.01317.86
7.4.130.0100.01116.47
7.4.120.0090.01116.37
7.4.110.0080.00816.44
7.4.100.0030.01416.32
7.4.90.0070.01716.33
7.4.80.0120.00616.37
7.4.70.0090.00916.33
7.4.60.0160.00016.51
7.4.50.0060.00316.09
7.4.40.0080.00522.77
7.4.30.0060.01216.40
7.4.00.0090.00614.98
7.3.330.0050.00012.93
7.3.320.0000.00612.98
7.3.310.0040.00416.16
7.3.300.0040.00416.03
7.3.290.0070.01016.22
7.3.280.0040.01516.21
7.3.270.0090.01417.40
7.3.260.0170.00716.30
7.3.250.0100.00916.35
7.3.240.0150.00616.45
7.3.230.0130.00216.39
7.3.210.0060.01116.49
7.3.200.0100.00719.39
7.3.190.0090.00816.40
7.3.180.0060.00916.20
7.3.170.0090.00616.34
7.3.160.0110.01216.32
7.3.120.0100.00714.65
7.2.330.0030.01416.61
7.2.320.0030.01316.55
7.2.310.0130.00716.46
7.2.300.0100.00716.55
7.2.290.0100.01016.60
7.2.60.0040.01116.82
7.2.00.0060.01019.00
7.1.200.0080.00315.71
7.1.100.0000.00817.87
7.1.70.0000.01016.90
7.1.60.0030.00717.09
7.1.50.0110.01116.50
7.1.00.0030.07722.28
7.0.200.0040.00816.72
7.0.140.0030.07022.15
7.0.80.0100.03019.86
7.0.70.0470.04019.88
7.0.60.0070.03719.84
7.0.50.0100.04320.21
7.0.40.0000.03719.92
7.0.30.0000.04720.09
7.0.20.0030.03720.18
7.0.10.0100.03020.12
7.0.00.0000.04319.99
5.6.280.0030.07021.09
5.6.230.0070.03720.52
5.6.220.0000.04320.66
5.6.210.0070.04320.64
5.6.200.0070.03321.07
5.6.190.0030.04320.93
5.6.180.0100.03021.07
5.6.170.0000.03720.91
5.6.160.0000.03721.07
5.6.150.0070.03321.00
5.6.140.0070.03321.07
5.6.130.0130.02721.00
5.6.120.0030.04321.07
5.6.110.0000.04320.99
5.6.100.0100.02721.03
5.6.90.0130.02721.11
5.6.80.0030.03320.43
5.6.70.0030.03720.41
5.6.60.0130.06320.41
5.6.50.0030.04320.54
5.6.40.0170.07720.49
5.6.30.0100.03320.31
5.6.20.0000.04320.39
5.6.10.0030.03720.32
5.6.00.0000.03720.38
5.5.370.0000.03720.43
5.5.360.0030.04020.52
5.5.350.0070.04020.33
5.5.340.0100.03320.93
5.5.330.0000.03720.79
5.5.320.0000.03720.82
5.5.310.0130.04020.72
5.5.300.0000.04320.77
5.5.290.0030.03320.75
5.5.280.0100.03020.92
5.5.270.0100.03020.84
5.5.260.0030.03720.78
5.5.250.0030.03720.64
5.5.240.0070.03720.18
5.5.230.0030.07020.29
5.5.220.0100.03720.18
5.5.210.0030.05320.14
5.5.200.0100.07320.27
5.5.190.0130.07720.20
5.5.180.0130.03320.19
5.5.160.0070.04320.14
5.5.150.0030.05020.13
5.5.140.0000.04320.22
5.5.130.0030.04020.16
5.5.120.0170.06320.11
5.5.110.0100.05020.25
5.5.100.0070.08020.10
5.5.90.0200.04020.14
5.5.80.0030.04020.10
5.5.70.0070.03720.07
5.5.60.0070.07720.14
5.5.50.0030.08320.14
5.5.40.0100.07720.02
5.5.30.0070.03720.05
5.5.20.0070.06720.02
5.5.10.0000.04720.10
5.5.00.0070.05320.07
5.4.450.0030.03719.23
5.4.440.0000.03719.47
5.4.430.0030.03319.27
5.4.420.0000.04019.13
5.4.410.0070.03019.04
5.4.400.0030.04718.81
5.4.390.0100.06019.23
5.4.380.0030.04019.06
5.4.370.0070.05318.90
5.4.360.0030.03719.13
5.4.350.0070.04019.04
5.4.340.0100.03319.12
5.4.320.0000.05019.07
5.4.310.0030.07019.08
5.4.300.0100.03018.95
5.4.290.0000.08018.94
5.4.280.0030.04718.96
5.4.270.0170.06718.98
5.4.260.0100.04019.07
5.4.250.0130.06718.78
5.4.240.0130.06018.94
5.4.230.0130.06319.06
5.4.220.0070.07019.13
5.4.210.0100.06319.13
5.4.200.0030.07018.97
5.4.190.0070.07718.95
5.4.180.0070.06719.02
5.4.170.0200.04018.77
5.4.160.0030.05718.82
5.4.150.0070.08019.00
5.4.140.0070.06316.27
5.4.130.0070.07716.05
5.4.120.0030.07716.38
5.4.110.0030.05716.21
5.4.100.0130.07016.36
5.4.90.0130.05016.25
5.4.80.0000.04316.20
5.4.70.0100.06316.34
5.4.60.0030.06016.33
5.4.50.0070.05016.24
5.4.40.0070.07316.44
5.4.30.0100.03716.40
5.4.20.0100.04316.27
5.4.10.0030.06016.32
5.4.00.0030.07715.79
5.3.290.0100.07314.52
5.3.280.0070.05314.45
5.3.270.0070.07714.46
5.3.260.0030.07314.58
5.3.250.0030.04014.59
5.3.240.0030.07714.57
5.3.230.0100.07314.55
5.3.220.0170.06014.41
5.3.210.0030.06014.54
5.3.200.0030.04014.40
5.3.190.0100.03314.50
5.3.180.0070.04014.42
5.3.170.0100.08014.51
5.3.160.0030.04014.41
5.3.150.0070.07714.54
5.3.140.0170.06314.49
5.3.130.0100.05014.50
5.3.120.0100.06314.52
5.3.110.0100.07714.54
5.3.100.0070.06013.89
5.3.90.0030.07313.99
5.3.80.0030.07713.96
5.3.70.0130.06713.97
5.3.60.0100.07313.99
5.3.50.0030.07713.88
5.3.40.0030.03713.80
5.3.30.0100.06313.91
5.3.20.0070.04313.68
5.3.10.0070.05313.63
5.3.00.0070.04013.65
5.2.170.0130.04712.46
5.2.160.0070.05012.46
5.2.150.0030.03012.46
5.2.140.0030.04012.46
5.2.130.0070.06012.46
5.2.120.0000.06312.46
5.2.110.0000.04012.46
5.2.100.0030.06312.46
5.2.90.0070.04312.46
5.2.80.0030.03012.46
5.2.70.0070.06012.46
5.2.60.0100.04312.46
5.2.50.0030.05012.46
5.2.40.0000.03012.46
5.2.30.0000.07012.46
5.2.20.0130.03712.46
5.2.10.0100.05312.46
5.2.00.0100.05712.46
5.1.60.0070.04012.46
5.1.50.0030.05312.46
5.1.40.0000.03712.46
5.1.30.0030.05012.46
5.1.20.0100.04312.46
5.1.10.0130.03012.46
5.1.00.0070.05312.46
5.0.50.0000.03312.46
5.0.40.0000.02312.46
5.0.30.0030.06312.46
5.0.20.0030.04312.46
5.0.10.0000.04012.46
5.0.00.0030.06312.46
4.4.90.0030.03312.46
4.4.80.0070.03012.46
4.4.70.0000.02312.46
4.4.60.0000.03712.46
4.4.50.0000.02012.46
4.4.40.0000.05712.46
4.4.30.0100.02712.46
4.4.20.0070.03012.46
4.4.10.0000.02312.46
4.4.00.0030.02312.46
4.3.110.0070.03012.46
4.3.100.0000.02312.46
4.3.90.0030.03312.46
4.3.80.0030.03312.46
4.3.70.0000.02312.46
4.3.60.0030.03012.46
4.3.50.0030.02012.46
4.3.40.0030.03312.46
4.3.30.0030.01712.46
4.3.20.0000.02012.46
4.3.10.0000.03312.46
4.3.00.0030.03312.46

preferences:
45.97 ms | 401 KiB | 5 Q