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)
8.3.40.0120.00618.59
8.3.30.0130.00020.17
8.3.20.0080.00020.36
8.3.10.0000.00820.89
8.3.00.0050.00322.58
8.2.170.0140.00722.96
8.2.160.0070.00720.39
8.2.150.0080.00024.18
8.2.140.0000.00824.66
8.2.130.0050.00226.16
8.2.120.0070.00021.12
8.2.110.0060.00321.00
8.2.100.0070.00417.53
8.2.90.0000.00719.27
8.2.80.0040.00417.97
8.2.70.0050.00317.50
8.2.60.0040.00417.93
8.2.50.0000.00818.07
8.2.40.0000.00718.09
8.2.30.0050.00319.84
8.2.20.0040.00417.46
8.2.10.0040.00417.40
8.2.00.0000.00717.53
8.1.270.0050.00323.99
8.1.260.0050.00226.35
8.1.250.0040.00428.09
8.1.240.0060.00322.52
8.1.230.0120.00020.96
8.1.220.0030.00518.77
8.1.210.0000.00818.77
8.1.200.0030.00617.23
8.1.190.0040.00417.41
8.1.180.0050.00518.10
8.1.170.0040.00418.57
8.1.160.0000.00718.80
8.1.150.0050.00318.47
8.1.140.0070.00017.39
8.1.130.0000.00717.80
8.1.120.0050.00217.28
8.1.110.0000.00917.38
8.1.100.0000.00717.28
8.1.90.0050.00317.30
8.1.80.0030.00317.38
8.1.70.0000.00717.29
8.1.60.0040.00417.44
8.1.50.0000.00717.41
8.1.40.0080.00017.40
8.1.30.0040.00417.54
8.1.20.0000.00817.48
8.1.10.0000.00817.54
8.1.00.0000.00717.43
8.0.300.0000.00819.98
8.0.290.0030.00516.75
8.0.280.0000.00718.43
8.0.270.0030.00517.24
8.0.260.0070.00016.75
8.0.250.0030.00316.95
8.0.240.0090.00016.86
8.0.230.0080.00016.92
8.0.220.0070.00016.80
8.0.210.0050.00216.84
8.0.200.0030.00316.88
8.0.190.0000.00816.79
8.0.180.0000.00716.88
8.0.170.0000.00816.84
8.0.160.0020.00516.74
8.0.150.0030.00316.66
8.0.140.0040.00416.82
8.0.130.0050.00013.20
8.0.120.0000.00716.82
8.0.110.0000.00916.64
8.0.100.0000.00716.66
8.0.90.0000.00816.93
8.0.80.0070.00716.83
8.0.70.0040.00416.69
8.0.60.0050.00216.88
8.0.50.0040.00416.73
8.0.30.0070.01716.91
8.0.20.0110.00817.40
8.0.10.0040.00416.93
8.0.00.0090.00916.54
7.4.330.0020.00216.77
7.4.320.0030.00316.49
7.4.300.0030.00316.40
7.4.290.0070.00016.42
7.4.280.0040.00416.50
7.4.270.0080.00016.36
7.4.260.0000.00513.23
7.4.250.0000.00816.37
7.4.240.0000.00716.50
7.4.230.0030.00316.31
7.4.220.0030.01416.55
7.4.210.0070.00916.54
7.4.200.0070.00016.45
7.4.190.0040.00416.40
7.4.160.0090.00616.50
7.4.150.0060.01517.40
7.4.140.0080.01217.86
7.4.130.0120.00516.46
7.4.120.0060.01216.51
7.4.110.0100.00716.38
7.4.100.0030.01316.53
7.4.90.0150.00916.36
7.4.80.0110.00719.39
7.4.70.0100.00716.30
7.4.60.0060.00916.30
7.4.50.0040.00416.36
7.4.40.0030.01322.77
7.4.30.0110.00716.34
7.4.00.0100.00714.79
7.3.330.0000.00613.04
7.3.320.0000.00513.18
7.3.310.0030.00316.20
7.3.300.0040.00416.17
7.3.290.0040.01216.08
7.3.280.0070.00916.21
7.3.270.0170.00017.40
7.3.260.0080.01218.24
7.3.250.0080.01216.48
7.3.240.0080.00916.46
7.3.230.0090.01016.39
7.3.210.0130.00316.36
7.3.200.0080.01219.39
7.3.190.0030.01416.51
7.3.180.0080.01116.45
7.3.170.0100.00616.30
7.3.160.0060.00916.19
7.3.120.0100.00314.70
7.2.330.0140.00316.52
7.2.320.0080.01216.52
7.2.310.0040.01416.36
7.2.300.0150.00016.59
7.2.290.0040.01416.50
7.2.00.0000.01119.31
7.1.100.0070.00717.89
7.1.70.0000.00917.08
7.1.60.0050.00917.14
7.1.50.0060.00816.62
7.1.40.0000.01116.60
7.1.30.0000.01616.58
7.1.20.0080.01116.63
7.1.10.0040.01116.46
7.1.00.0080.00416.72
7.0.200.0000.01016.85
7.0.190.0060.00316.52
7.0.180.0050.00516.07
7.0.170.0030.00816.08
7.0.160.0030.00616.03
7.0.150.0060.01216.27
7.0.140.0040.00716.13
7.0.130.0100.00516.51
7.0.120.0090.00416.58
7.0.110.0090.00016.27
7.0.100.0040.00716.20
7.0.90.0070.01016.46
7.0.80.0040.00416.13
7.0.70.0000.00716.15
7.0.60.0020.00515.96
7.0.50.0000.01216.39
7.0.40.0030.00614.87
7.0.30.0000.01114.87
7.0.20.0040.00414.87
7.0.10.0000.01514.87
7.0.00.0070.00014.87
5.6.300.0070.07120.79
5.6.290.0060.05120.91
5.6.280.0040.07420.97
5.6.270.0030.09821.07
5.6.260.0070.05920.86
5.6.250.0030.04320.73
5.6.240.0030.04320.83
5.6.230.0030.04120.95
5.6.220.0030.05020.79
5.6.210.0030.03820.96
5.6.200.0030.04420.76
5.6.190.0030.05121.02
5.6.180.0030.03920.98
5.6.170.0000.08321.02
5.6.160.0070.05621.04
5.6.150.0000.05020.82
5.6.140.0100.07920.82
5.6.130.0070.04020.73
5.6.120.0030.07620.81
5.6.110.0070.05820.82
5.6.100.0130.03620.84
5.6.90.0000.04420.80
5.6.80.0000.05920.37
5.6.70.0030.05920.30
5.6.60.0070.03720.30
5.6.50.0000.04120.32
5.6.40.0090.03520.19
5.6.30.0000.04220.10
5.6.20.0030.04220.17
5.6.10.0100.08320.30
5.6.00.0030.04420.39
5.5.380.0030.04317.48
5.5.370.0070.03617.46
5.5.360.0000.05617.59
5.5.350.0030.04417.45
5.5.340.0070.03718.03
5.5.330.0000.05118.06
5.5.320.0030.04617.97
5.5.310.0070.03518.12
5.5.300.0100.07418.00
5.5.290.0030.05017.86
5.5.280.0100.05417.93
5.5.270.0030.04317.85
5.5.260.0000.04217.98
5.5.250.0000.05617.84
5.5.240.0100.07617.13
5.5.230.0100.03217.41
5.5.220.0030.03817.35
5.5.210.0000.08817.32
5.5.200.0000.04217.19
5.5.190.0100.08317.35
5.5.180.0030.04217.07
5.5.160.0000.04117.06
5.5.150.0000.04217.29
5.5.140.0030.03817.38
5.5.130.0030.07617.38
5.5.120.0060.04117.09
5.5.110.0070.03617.08
5.5.100.0140.02717.23
5.5.90.0060.05817.28
5.5.80.0060.03217.13
5.5.70.0000.05917.18
5.5.60.0070.05317.18
5.5.50.0070.04617.18
5.5.40.0000.04916.95
5.5.30.0070.07717.25
5.5.20.0070.08517.09
5.5.10.0030.04417.21
5.5.00.0000.04517.23
5.4.450.0000.04319.38
5.4.440.0030.07819.38
5.4.430.0100.04319.38
5.4.420.0070.04619.30
5.4.410.0000.04019.26
5.4.400.0070.08018.83
5.4.390.0030.03718.98
5.4.380.0070.07619.16
5.4.370.0100.03019.05
5.4.360.0000.04419.16
5.4.350.0030.03919.07
5.4.340.0000.04118.88
5.4.320.0070.03719.09
5.4.310.0070.04619.16
5.4.300.0000.07319.07
5.4.290.0100.07319.14
5.4.280.0070.03718.85
5.4.270.0000.04118.97
5.4.260.0030.04219.14
5.4.250.0000.04118.97
5.4.240.0070.07519.04
5.4.230.0100.04519.13
5.4.220.0030.04818.82
5.4.210.0070.03619.06
5.4.200.0030.07618.97
5.4.190.0100.07119.00
5.4.180.0070.07318.97
5.4.170.0030.05418.96
5.4.160.0030.04018.83
5.4.150.0070.03518.84
5.4.140.0060.04216.34
5.4.130.0000.04216.64
5.4.120.0060.03216.61
5.4.110.0030.08716.57
5.4.100.0030.04216.66
5.4.90.0000.03916.61
5.4.80.0090.03116.34
5.4.70.0000.04016.62
5.4.60.0000.04616.40
5.4.50.0030.03516.55
5.4.40.0030.03316.65
5.4.30.0030.03316.33
5.4.20.0070.03316.55
5.4.10.0030.03616.47
5.4.00.0030.03315.92
5.3.290.0030.03814.87
5.3.280.0130.05214.87
5.3.270.0030.03614.87
5.3.260.0000.07414.87
5.3.250.0030.04214.87
5.3.240.0070.03714.87
5.3.230.0030.04414.87
5.3.220.0030.04314.87
5.3.210.0070.03314.87
5.3.200.0000.04114.87
5.3.190.0130.03614.87
5.3.180.0000.03814.87
5.3.170.0060.03214.87
5.3.160.0070.03314.87
5.3.150.0030.03514.87
5.3.140.0000.03814.87
5.3.130.0000.04914.87
5.3.120.0030.03914.87
5.3.110.0070.03114.87
5.3.100.0000.03814.87
5.3.90.0030.05814.87
5.3.80.0030.03314.87
5.3.70.0030.03614.87
5.3.60.0040.03914.87
5.3.50.0030.03314.87
5.3.40.0030.03814.87
5.3.30.0170.04614.87
5.3.20.0000.03914.87
5.3.10.0100.02914.87
5.3.00.0000.03914.87
5.2.170.0030.02714.87
5.2.160.0060.02514.87
5.2.150.0030.02914.87
5.2.140.0030.03914.87
5.2.130.0000.03114.87
5.2.120.0000.03314.87
5.2.110.0000.02914.87
5.2.100.0000.06914.87
5.2.90.0060.03814.87
5.2.80.0000.03814.87
5.2.70.0030.04014.87
5.2.60.0000.05414.87
5.2.50.0030.03514.87
5.2.40.0030.02714.87
5.2.30.0000.03114.87
5.2.20.0060.03114.87
5.2.10.0030.03714.87
5.2.00.0070.02314.87
5.1.60.0030.04514.87
5.1.50.0000.02814.87
5.1.40.0000.03214.87
5.1.30.0040.02514.87
5.1.20.0030.03414.87
5.1.10.0000.02814.87
5.1.00.0000.02714.87
5.0.50.0070.01714.87
5.0.40.0030.02714.87
5.0.30.0060.04114.87
5.0.20.0030.03214.87
5.0.10.0030.02514.87
5.0.00.0030.06614.87
4.4.90.0000.02314.87
4.4.80.0040.01814.87
4.4.70.0000.02714.87
4.4.60.0030.01514.87
4.4.50.0000.02914.87
4.4.40.0030.03614.87
4.4.30.0030.01314.87
4.4.20.0000.02614.87
4.4.10.0000.01814.87
4.4.00.0000.03114.87
4.3.110.0030.01514.87
4.3.100.0090.02814.87
4.3.90.0000.01614.87
4.3.80.0030.02214.87
4.3.70.0000.01614.87
4.3.60.0000.01614.87
4.3.50.0000.01614.87
4.3.40.0030.02814.87
4.3.30.0070.02014.87
4.3.20.0000.01714.87
4.3.10.0160.01214.87
4.3.00.0000.01814.87

preferences:
37.21 ms | 400 KiB | 5 Q