3v4l.org

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

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)
8.3.60.0200.00016.25
8.3.50.0160.00421.21
8.3.40.0120.00918.84
8.3.30.0150.00019.08
8.3.20.0070.00020.20
8.3.10.0040.00422.14
8.3.00.0050.00322.41
8.2.180.0070.00718.29
8.2.170.0060.00922.96
8.2.160.0070.00720.52
8.2.150.0080.00024.18
8.2.140.0070.00024.66
8.2.130.0060.01326.16
8.2.120.0030.00519.53
8.2.110.0060.00319.27
8.2.100.0040.00717.66
8.2.90.0040.00419.82
8.2.80.0000.00818.03
8.2.70.0000.00817.63
8.2.60.0000.00817.50
8.2.50.0030.00617.63
8.2.40.0040.00419.48
8.2.30.0050.00217.73
8.2.20.0040.00417.52
8.2.10.0040.00417.53
8.2.00.0080.00017.64
8.1.280.0120.00625.92
8.1.270.0060.00320.27
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00622.55
8.1.230.0040.00820.97
8.1.220.0040.00417.74
8.1.210.0080.00018.85
8.1.200.0000.00817.10
8.1.190.0030.00517.10
8.1.180.0000.00918.10
8.1.170.0040.00419.02
8.1.160.0020.00520.57
8.1.150.0040.00418.63
8.1.140.0070.00017.37
8.1.130.0030.00617.63
8.1.120.0000.00717.39
8.1.110.0040.00417.32
8.1.100.0070.00017.30
8.1.90.0000.00717.40
8.1.80.0000.00717.46
8.1.70.0070.00017.37
8.1.60.0030.00617.47
8.1.50.0000.00717.44
8.1.40.0050.00217.35
8.1.30.0080.00017.53
8.1.20.0040.00417.48
8.1.10.0000.00817.44
8.1.00.0040.00417.29
8.0.300.0040.00419.85
8.0.290.0050.00316.63
8.0.280.0080.00017.91
8.0.270.0030.00317.91
8.0.260.0030.00316.84
8.0.250.0030.00316.82
8.0.240.0000.00816.91
8.0.230.0070.00016.73
8.0.220.0030.00316.84
8.0.210.0000.00616.72
8.0.200.0050.00516.77
8.0.190.0030.00316.86
8.0.180.0000.00716.74
8.0.170.0050.00316.79
8.0.160.0040.00416.66
8.0.150.0070.00016.68
8.0.140.0050.00316.69
8.0.130.0030.00313.29
8.0.120.0040.00416.69
8.0.110.0070.00016.77
8.0.100.0040.00416.71
8.0.90.0040.00416.81
8.0.80.0090.00916.82
8.0.70.0040.00416.76
8.0.60.0030.00316.65
8.0.50.0080.00016.83
8.0.30.0070.01117.12
8.0.20.0130.00917.40
8.0.10.0000.00716.71
8.0.00.0100.01016.62
7.4.330.0060.00015.00
7.4.320.0000.00716.52
7.4.300.0000.00616.45
7.4.290.0070.00016.40
7.4.280.0040.00416.40
7.4.270.0030.00316.54
7.4.260.0000.00716.34
7.4.250.0070.00016.39
7.4.240.0050.00216.46
7.4.230.0040.00416.31
7.4.220.0120.00616.63
7.4.210.0060.01016.50
7.4.200.0070.00016.50
7.4.190.0000.00716.61
7.4.160.0060.00916.66
7.4.150.0060.01017.40
7.4.140.0100.01017.86
7.4.130.0050.01116.46
7.4.120.0070.01016.50
7.4.110.0100.00716.38
7.4.100.0070.01416.43
7.4.90.0130.00416.29
7.4.80.0120.01219.39
7.4.70.0140.00316.44
7.4.60.0100.00716.56
7.4.50.0000.00816.52
7.4.40.0080.00822.77
7.4.30.0120.00616.24
7.4.00.0050.01314.84
7.3.330.0030.00212.95
7.3.320.0000.00513.10
7.3.310.0040.00416.04
7.3.300.0030.00316.21
7.3.290.0030.01016.23
7.3.280.0060.01116.18
7.3.270.0080.00817.40
7.3.260.0070.01116.31
7.3.250.0100.00916.30
7.3.240.0110.00616.27
7.3.230.0110.01116.39
7.3.210.0120.00316.45
7.3.200.0150.00019.39
7.3.190.0090.01216.24
7.3.180.0060.00916.36
7.3.170.0060.01216.27
7.3.160.0150.00316.46
7.3.120.0090.00914.70
7.3.110.0100.00714.38
7.3.100.0060.00914.52
7.3.90.0040.01114.89
7.3.80.0070.00714.74
7.3.70.0070.00714.71
7.3.60.0000.01514.46
7.3.50.0110.00414.61
7.3.40.0030.00614.83
7.3.30.0000.01514.69
7.3.20.0120.00316.53
7.3.10.0080.00416.72
7.3.00.0100.00716.56
7.2.330.0070.01016.54
7.2.320.0080.00816.51
7.2.310.0100.00716.33
7.2.300.0160.00716.60
7.2.290.0120.00916.40
7.2.250.0120.00415.05
7.2.240.0030.01314.74
7.2.230.0100.00614.94
7.2.220.0060.00615.17
7.2.210.0000.01015.03
7.2.200.0080.00415.05
7.2.190.0030.00914.86
7.2.180.0030.01014.82
7.2.170.0070.00714.75
7.2.110.0260.00016.27
7.2.60.0250.00916.40
7.2.00.0000.01518.99
7.1.330.0100.00315.55
7.1.320.0060.01015.69
7.1.310.0000.01216.05
7.1.300.0030.01315.90
7.1.290.0070.00715.57
7.1.280.0070.00715.67
7.1.270.0080.00515.51
7.1.260.0090.00615.71
7.1.200.0090.00315.33
7.1.100.0000.01318.05
7.1.70.0000.00916.87
7.1.60.0120.00019.82
7.1.50.0090.01316.91
7.1.00.0000.03722.31
7.0.200.0000.01016.39
7.0.140.0070.07322.08
7.0.60.0030.07319.93
7.0.50.0100.05717.82
7.0.40.0170.07720.05
7.0.30.0270.03320.13
7.0.20.0400.07320.12
7.0.10.0170.08020.33
7.0.00.0070.07320.09
5.6.280.0000.07720.80
5.6.210.0100.06720.70
5.6.200.0100.05318.16
5.6.190.0070.08320.77
5.6.180.0330.07720.27
5.6.170.0300.08020.37
5.6.160.0000.07320.61
5.6.150.0070.07718.27
5.6.140.0070.05318.18
5.6.130.0070.04718.13
5.6.120.0070.07021.03
5.6.110.0170.07021.08
5.6.100.0100.05720.95
5.6.90.0130.07720.96
5.6.80.0130.03320.35
5.6.70.4500.04020.27
5.5.350.0030.04020.39
5.5.340.0130.07018.00
5.5.330.0070.06720.37
5.5.320.0170.04320.29
5.5.310.0230.05320.29
5.5.300.0100.07318.01
5.5.290.0070.05718.02
5.5.280.0070.06020.89
5.5.270.0130.07720.87
5.5.260.0100.04020.75
5.5.250.0070.06720.65
5.5.240.0300.06320.26
5.4.450.2630.03719.46
5.4.440.2430.03719.54
5.4.430.0470.03719.38
5.4.420.0030.03719.25
5.4.410.0300.03318.97
5.4.400.1600.03319.24
5.4.390.2170.03719.09
5.4.380.2470.03719.25
5.4.370.1900.04319.22
5.4.360.2570.04018.93
5.4.350.3000.03319.08
5.4.340.2670.04019.06
5.4.320.2800.04318.77
5.4.310.2430.03719.25
5.4.300.0100.05719.21
5.4.290.0030.06019.14
5.4.280.1130.06319.13
5.4.270.2900.04019.10
5.4.260.2500.04319.24
5.4.250.2970.03718.89
5.4.240.2730.04019.07
5.4.230.2830.04019.09
5.4.220.2700.04719.09
5.4.210.2830.03719.09
5.4.200.2870.04019.05
5.4.190.2800.03719.07
5.4.180.2870.03719.12
5.4.170.2870.03719.07
5.4.160.2870.03719.04
5.4.150.2630.03719.04
5.4.140.2830.03716.38
5.4.130.3270.03716.26
5.4.120.2000.03716.23
5.4.110.0100.03016.39
5.4.100.0000.04016.18
5.4.90.1830.04716.43
5.4.80.2800.03716.44
5.4.70.2670.03716.38
5.4.60.2670.04016.47
5.4.50.2670.03316.47
5.4.40.2700.03316.36
5.4.30.2800.03716.47
5.4.20.2630.04316.45
5.4.10.2930.04316.20
5.4.00.2700.03715.89
5.3.290.3200.04714.62
5.3.280.2770.03714.45
5.3.270.2670.04014.51
5.3.260.3170.04714.44
5.3.250.2870.03714.43
5.3.240.3330.04714.54
5.3.230.3100.04014.44
5.3.220.2530.04714.50
5.3.210.3000.03714.46
5.3.200.2600.03314.39
5.3.190.2800.04014.54
5.3.180.3000.05014.57
5.3.170.3070.03714.65
5.3.160.2830.03714.43
5.3.150.1470.04014.60
5.3.140.0070.06714.50
5.3.130.0030.04014.53
5.3.120.0530.06714.52
5.3.110.2470.04014.63
5.3.100.3170.03713.98
5.3.90.2730.04013.85
5.3.80.2930.03014.03
5.3.70.2800.03713.85
5.3.60.2870.03713.83
5.3.50.2830.04013.88
5.3.40.3170.03313.85
5.3.30.3070.03713.75
5.3.20.3030.04313.55
5.3.10.2730.03713.70
5.3.00.2870.03013.62
5.2.170.2270.02311.08
5.2.160.2030.03711.16
5.2.150.2370.02710.98
5.2.140.2470.03011.19
5.2.130.1430.03010.96
5.2.120.0100.05311.04
5.2.110.0070.03710.95
5.2.100.0100.03311.04
5.2.90.1900.03011.11
5.2.80.2330.03310.94
5.2.70.2230.03011.10
5.2.60.2170.02710.90
5.2.50.2200.02311.11
5.2.40.1900.02310.88
5.2.30.2070.03310.82
5.2.20.2070.02711.02
5.2.10.2030.02710.80
5.2.00.1830.03010.72
5.1.60.1800.0239.85
5.1.50.1870.0209.88
5.1.40.2170.02710.09
5.1.30.1930.02310.38
5.1.20.2130.03010.50
5.1.10.2100.0309.94
5.1.00.2070.0339.96
5.0.50.1030.0278.43
5.0.40.0770.0178.38
5.0.30.0930.0338.23
5.0.20.0900.0208.09
5.0.10.0830.0238.05
5.0.00.0900.0308.39
4.4.90.1000.0176.84
4.4.80.0970.0136.84
4.4.70.1230.0136.84
4.4.60.0900.0136.84
4.4.50.1030.0176.84
4.4.40.0870.0236.84
4.4.30.0900.0176.84
4.4.20.0930.0136.84
4.4.10.0900.0136.84
4.4.00.1030.0276.84
4.3.110.0930.0176.84
4.3.100.0930.0136.84
4.3.90.0870.0176.84
4.3.80.0930.0276.84
4.3.70.0870.0176.84
4.3.60.0970.0136.84
4.3.50.0970.0136.84
4.3.40.1000.0206.84
4.3.30.0570.0276.84
4.3.20.0570.0136.84
4.3.10.0470.0136.84
4.3.00.0400.0176.84

preferences:
56.49 ms | 401 KiB | 5 Q