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)
8.3.60.0090.00618.35
8.3.50.0090.00721.99
8.3.40.0000.01418.50
8.3.30.0070.00719.11
8.3.20.0000.00720.16
8.3.10.0050.00323.66
8.3.00.0040.00420.79
8.2.180.0130.00916.32
8.2.170.0090.00622.96
8.2.160.0090.00420.52
8.2.150.0000.00824.18
8.2.140.0050.00224.66
8.2.130.0050.00326.16
8.2.120.0050.00319.24
8.2.110.0040.00422.25
8.2.100.0100.00317.63
8.2.90.0080.00019.09
8.2.80.0030.00617.97
8.2.70.0050.00317.38
8.2.60.0080.00017.80
8.2.50.0040.00418.07
8.2.40.0000.00819.82
8.2.30.0040.00418.16
8.2.20.0040.00417.59
8.2.10.0030.00517.98
8.2.00.0040.00417.54
8.1.280.0100.00725.92
8.1.270.0060.00322.00
8.1.260.0130.00326.35
8.1.250.0080.00028.09
8.1.240.0090.00023.97
8.1.230.0070.00419.16
8.1.220.0000.00817.74
8.1.210.0080.00018.77
8.1.200.0060.00617.11
8.1.190.0080.00017.10
8.1.180.0040.00418.10
8.1.170.0000.00918.50
8.1.160.0020.00522.00
8.1.150.0000.00818.62
8.1.140.0000.00817.24
8.1.130.0030.00319.57
8.1.120.0000.00717.23
8.1.110.0000.00917.27
8.1.100.0000.00817.29
8.1.90.0000.00717.41
8.1.80.0040.00417.44
8.1.70.0030.00317.35
8.1.60.0040.00817.57
8.1.50.0030.00517.32
8.1.40.0060.00617.46
8.1.30.0030.00517.48
8.1.20.0000.00717.55
8.1.10.0050.00217.39
8.1.00.0050.00217.40
8.0.300.0070.00018.77
8.0.290.0080.00016.63
8.0.280.0030.00318.39
8.0.270.0030.00317.17
8.0.260.0060.00017.15
8.0.250.0070.00016.93
8.0.240.0000.00716.95
8.0.230.0070.00016.84
8.0.220.0070.00016.81
8.0.210.0070.00016.79
8.0.200.0030.00316.84
8.0.190.0000.00816.79
8.0.180.0040.00416.73
8.0.170.0000.00816.75
8.0.160.0030.00616.70
8.0.150.0070.00016.67
8.0.140.0030.00316.79
8.0.130.0040.00413.29
8.0.120.0020.00516.79
8.0.110.0000.00716.86
8.0.100.0080.00016.71
8.0.90.0030.00516.86
8.0.80.0110.01116.85
8.0.70.0000.00716.87
8.0.60.0000.00716.78
8.0.50.0030.00516.75
8.0.30.0100.01016.96
8.0.20.0090.01017.40
8.0.10.0000.00716.92
8.0.00.0080.01216.69
7.4.330.0000.00515.07
7.4.320.0000.00716.52
7.4.300.0000.00616.33
7.4.290.0070.00016.52
7.4.280.0000.00716.32
7.4.270.0030.00316.42
7.4.260.0070.00016.50
7.4.250.0000.00816.32
7.4.240.0020.00516.49
7.4.230.0040.00416.52
7.4.220.0130.00416.39
7.4.210.0040.01116.56
7.4.200.0080.00016.63
7.4.160.0120.00316.60
7.4.150.0140.00317.40
7.4.140.0110.00817.86
7.4.130.0120.00616.25
7.4.120.0090.00816.30
7.4.110.0100.00616.52
7.4.100.0100.00716.58
7.4.90.0150.00316.58
7.4.80.0160.00319.39
7.4.70.0090.00916.38
7.4.60.0090.01216.44
7.4.50.0020.00216.07
7.4.40.0060.01216.19
7.4.30.0060.01216.33
7.4.00.0100.00315.08
7.3.330.0030.00312.90
7.3.320.0000.00512.91
7.3.310.0070.00016.27
7.3.300.0050.00316.12
7.3.290.0100.01016.24
7.3.280.0100.00716.22
7.3.270.0140.00317.40
7.3.260.0150.00316.41
7.3.250.0090.00916.35
7.3.240.0140.00216.34
7.3.230.0100.00716.39
7.3.210.0160.00316.06
7.3.200.0170.00619.39
7.3.190.0060.00916.52
7.3.180.0040.01116.47
7.3.170.0060.00916.36
7.3.160.0110.00416.36
7.3.120.0080.00814.84
7.3.10.0030.00916.27
7.3.00.0060.00916.71
7.2.330.0150.00616.32
7.2.320.0170.01016.32
7.2.310.0060.01016.25
7.2.300.0080.00816.64
7.2.290.0160.01216.60
7.2.130.0060.00916.80
7.2.120.0060.00616.79
7.2.110.0000.01016.91
7.2.100.0070.00716.54
7.2.90.0100.00716.60
7.2.80.0030.00916.54
7.2.70.0030.00816.61
7.2.60.0060.00916.64
7.2.50.0070.00716.62
7.2.40.0070.00416.73
7.2.30.0030.01016.86
7.2.20.0040.00716.63
7.2.10.0040.00717.06
7.2.00.0090.00417.89
7.1.250.0040.00415.52
7.1.100.0030.01318.20
7.1.70.0100.00316.67
7.1.60.0100.00716.99
7.1.50.0090.00616.52
7.1.40.0090.00916.33
7.1.30.0070.00716.76
7.1.20.0100.00316.70
7.1.10.0030.00816.52
7.1.00.0080.00016.68
7.0.200.0000.01316.72
7.0.190.0030.01416.43
7.0.180.0050.00916.19
7.0.170.0030.00916.01
7.0.160.0000.00716.02
7.0.150.0000.01016.18
7.0.140.0040.00416.27
7.0.130.0100.00316.62
7.0.120.0060.00316.54
7.0.110.0040.00416.02
7.0.100.0030.00616.24
7.0.90.0000.00916.14
7.0.80.0040.00416.25
7.0.70.0030.00516.27
7.0.60.0000.00816.14
7.0.50.0030.00616.44
7.0.40.0030.00715.15
7.0.30.0060.00615.15
7.0.20.0000.00915.15
7.0.10.0040.00415.15
7.0.00.0090.00615.15
5.6.300.0070.03820.83
5.6.290.0000.07420.99
5.6.280.0060.06320.97
5.6.270.0120.03720.80
5.6.260.0000.04821.03
5.6.250.0000.04920.95
5.6.240.0000.04420.85
5.6.230.0070.03720.88
5.6.220.0030.05521.02
5.6.210.0000.05221.00
5.6.200.0120.03120.86
5.6.190.0030.05320.98
5.6.180.0070.05420.98
5.6.170.0140.08220.95
5.6.160.0140.04421.02
5.6.150.0040.04320.93
5.6.140.0060.06120.78
5.6.130.0040.04220.86
5.6.120.0030.04520.80
5.6.110.0100.03720.94
5.6.100.0070.04020.92
5.6.90.0000.04520.90
5.6.80.0070.03420.12
5.6.70.0060.03520.35
5.6.60.0030.04120.23
5.6.50.0000.04620.34
5.6.40.0100.03920.22
5.6.30.0030.04520.30
5.6.20.0030.04320.17
5.6.10.0030.03720.38
5.6.00.0070.04320.17
5.5.380.0060.04817.54
5.5.370.0030.04117.57
5.5.360.0060.04517.56
5.5.350.0030.04117.49
5.5.340.0030.04317.98
5.5.330.0000.05318.03
5.5.320.0060.04218.04
5.5.310.0120.06217.84
5.5.300.0030.04617.68
5.5.290.0000.04917.93
5.5.280.0070.05018.03
5.5.270.0060.03817.70
5.5.260.0030.04918.02
5.5.250.0070.04317.78
5.5.240.0000.04017.25
5.5.230.0030.05017.32
5.5.220.0030.04417.08
5.5.210.0000.04017.08
5.5.200.0000.04617.10
5.5.190.0030.04017.38
5.5.180.0060.03617.32
5.5.160.0170.03017.29
5.5.150.0070.04417.37
5.5.140.0030.04417.37
5.5.130.0070.03417.40
5.5.120.0030.03617.05
5.5.110.0260.02917.36
5.5.100.0030.03617.20
5.5.90.0000.04317.28
5.5.80.0200.04017.32
5.5.70.0000.04217.23
5.5.60.0160.04316.98
5.5.50.0030.03517.19
5.5.40.0060.03616.98
5.5.30.0000.04217.10
5.5.20.0030.04517.07
5.5.10.0030.04417.10
5.5.00.0070.03717.20
5.4.450.0000.04219.36
5.4.440.0240.04419.40
5.4.430.0000.04419.17
5.4.420.0030.04319.37
5.4.410.0070.04119.34
5.4.400.0030.04019.03
5.4.390.0100.06419.02
5.4.380.0000.04419.05
5.4.370.0070.03719.06
5.4.360.0000.04218.82
5.4.350.0090.03519.13
5.4.340.0030.04119.14
5.4.320.0100.07519.06
5.4.310.0000.04118.84
5.4.300.0030.04118.86
5.4.290.0030.03618.89
5.4.280.0030.05119.02
5.4.270.0030.03718.82
5.4.260.0060.03818.86
5.4.250.0100.03118.83
5.4.240.0000.04019.04
5.4.230.0000.04019.05
5.4.220.0000.04518.97
5.4.210.0030.04519.05
5.4.200.0030.04018.82
5.4.190.0000.04419.04
5.4.180.0070.03619.00
5.4.170.0030.05019.01
5.4.160.0030.04119.03
5.4.150.0030.04219.13
5.4.140.0030.03916.54
5.4.130.0030.03916.62
5.4.120.0030.03816.62
5.4.110.0030.04216.33
5.4.100.0070.03116.59
5.4.90.0070.03416.66
5.4.80.0000.04616.46
5.4.70.0070.07916.35
5.4.60.0030.03416.40
5.4.50.0130.05216.33
5.4.40.0030.03716.61
5.4.30.0030.03716.55
5.4.20.0000.04116.47
5.4.10.0000.03916.55
5.4.00.0060.03415.88
5.3.290.0000.06115.15
5.3.280.0070.05015.15
5.3.270.0070.03415.15
5.3.260.0000.05315.15
5.3.250.0000.04215.15
5.3.240.0000.04015.15
5.3.230.0000.04115.15
5.3.220.0140.04115.15
5.3.210.0030.04015.15
5.3.200.0070.03315.15
5.3.190.0000.03815.15
5.3.180.0000.03815.15
5.3.170.0030.05515.15
5.3.160.0030.07815.15
5.3.150.0070.04615.15
5.3.140.0040.03915.15
5.3.130.0000.04715.15
5.3.120.0030.04015.15
5.3.110.0030.03815.15
5.3.100.0030.03715.15
5.3.90.0000.04515.15
5.3.80.0000.03915.15
5.3.70.0000.04015.15
5.3.60.0070.03415.15
5.3.50.0030.03415.15
5.3.40.0000.04015.15
5.3.30.0030.03415.15
5.3.20.0000.04515.15
5.3.10.0000.03915.15
5.3.00.0030.03715.15
5.2.170.0070.03115.15
5.2.160.0030.02615.15
5.2.150.0200.03615.15
5.2.140.0000.04315.15
5.2.130.0070.02715.15
5.2.120.0000.04115.15
5.2.110.0070.02715.15
5.2.100.0000.03215.15
5.2.90.0030.03715.15
5.2.80.0030.02815.15
5.2.70.0000.04715.15
5.2.60.0030.03015.15
5.2.50.0040.02815.15
5.2.40.0000.04215.15
5.2.30.0060.03615.15
5.2.20.0030.03215.15
5.2.10.0260.01915.15
5.2.00.0000.03015.15
5.1.60.0030.02315.15
5.1.50.0030.02315.15
5.1.40.0030.02415.15
5.1.30.0070.02115.15
5.1.20.0030.02715.15
5.1.10.0070.04015.15
5.1.00.0030.02315.15
5.0.50.0000.02415.15
5.0.40.0000.02215.15
5.0.30.0000.03415.15
5.0.20.0070.01715.15
5.0.10.0000.02915.15
5.0.00.0030.02815.15
4.4.90.0030.01315.15
4.4.80.0030.01415.15
4.4.70.0000.01715.15
4.4.60.0000.01915.15
4.4.50.0140.01015.15
4.4.40.0030.02515.15
4.4.30.0030.01415.15
4.4.20.0030.01315.15
4.4.10.0060.01215.15
4.4.00.0000.02915.15
4.3.110.0000.01615.15
4.3.100.0030.01415.15
4.3.90.0030.01615.15
4.3.80.0000.02615.15
4.3.70.0000.01715.15
4.3.60.0060.01015.15
4.3.50.0030.01315.15
4.3.40.0000.02515.15
4.3.30.0000.01715.15
4.3.20.0040.01515.15
4.3.10.0000.01815.15
4.3.00.0030.01515.15

preferences:
41.81 ms | 401 KiB | 5 Q