3v4l.org

run code in 300+ PHP versions simultaneously
<?php mb_internal_encoding('UTF-8'); echo 'Subject: ', mb_encode_mimeheader('&#9786;', '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)
8.3.60.0140.00718.18
8.3.50.0060.01321.99
8.3.40.0030.01018.77
8.3.30.0190.00018.82
8.3.20.0050.00220.21
8.3.10.0080.00022.10
8.3.00.0070.00022.57
8.2.180.0110.00716.32
8.2.170.0070.00722.96
8.2.160.0070.00720.94
8.2.150.0030.00524.18
8.2.140.0080.00024.66
8.2.130.0000.00726.16
8.2.120.0050.00317.50
8.2.110.0030.00522.29
8.2.100.0040.00817.78
8.2.90.0050.00319.09
8.2.80.0000.00917.97
8.2.70.0080.00017.61
8.2.60.0030.00717.91
8.2.50.0060.00318.07
8.2.40.0040.00418.09
8.2.30.0030.00617.98
8.2.20.0050.00217.64
8.2.10.0070.00017.61
8.2.00.0050.00317.42
8.1.280.0120.00825.92
8.1.270.0040.00422.20
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0070.00323.67
8.1.230.0070.00319.20
8.1.220.0070.00017.74
8.1.210.0080.00018.77
8.1.200.0060.00317.23
8.1.190.0030.00517.05
8.1.180.0040.00418.10
8.1.170.0040.00418.50
8.1.160.0040.00421.98
8.1.150.0040.00418.61
8.1.140.0040.00417.30
8.1.130.0030.00517.75
8.1.120.0040.00417.40
8.1.110.0060.00517.39
8.1.100.0040.00317.41
8.1.90.0000.00717.30
8.1.80.0000.00717.45
8.1.70.0000.00717.38
8.1.60.0000.00817.43
8.1.50.0050.00317.34
8.1.40.0030.00517.46
8.1.30.0000.00717.52
8.1.20.0040.00417.65
8.1.10.0000.00917.42
8.1.00.0070.00017.43
8.0.300.0000.00718.77
8.0.290.0070.00017.18
8.0.280.0000.00718.43
8.0.270.0030.00317.25
8.0.260.0060.00016.86
8.0.250.0030.00616.97
8.0.240.0000.00716.83
8.0.230.0040.00416.94
8.0.220.0030.00316.89
8.0.210.0000.00716.69
8.0.200.0000.00716.77
8.0.190.0000.00716.88
8.0.180.0040.00316.82
8.0.170.0060.00316.72
8.0.160.0000.00816.63
8.0.150.0030.00516.70
8.0.140.0070.00016.71
8.0.130.0030.00313.29
8.0.120.0030.00616.68
8.0.110.0070.00016.68
8.0.100.0030.00316.71
8.0.90.0000.00716.83
8.0.80.0090.00616.88
8.0.70.0000.00816.87
8.0.60.0030.00316.89
8.0.50.0000.00716.75
8.0.30.0130.00716.96
8.0.20.0110.00717.40
8.0.10.0040.00416.75
8.0.00.0090.01216.65
7.4.330.0000.00515.00
7.4.320.0000.00616.43
7.4.300.0060.00016.44
7.4.290.0030.00516.33
7.4.280.0000.00616.42
7.4.270.0000.00716.36
7.4.260.0070.00316.49
7.4.250.0000.00816.50
7.4.240.0030.00316.33
7.4.230.0000.00816.50
7.4.220.0100.00716.53
7.4.210.0060.01016.54
7.4.200.0040.00416.51
7.4.190.0000.00816.57
7.4.160.0090.00616.37
7.4.150.0100.00717.40
7.4.140.0100.01017.86
7.4.130.0060.01216.35
7.4.120.0110.00616.43
7.4.110.0080.00816.37
7.4.100.0090.00616.51
7.4.90.0000.01716.36
7.4.80.0030.01619.39
7.4.70.0060.01116.50
7.4.60.0040.01216.28
7.4.50.0030.00616.39
7.4.40.0060.01022.77
7.4.30.0000.01616.48
7.4.00.0040.01114.86
7.3.330.0030.00313.08
7.3.320.0000.00513.06
7.3.310.0000.00716.33
7.3.300.0070.00016.21
7.3.290.0120.00316.24
7.3.280.0060.00916.17
7.3.270.0100.01317.40
7.3.260.0080.01216.30
7.3.250.0150.00516.18
7.3.240.0100.00716.25
7.3.230.0070.01016.42
7.3.210.0060.01316.27
7.3.200.0120.00619.39
7.3.190.0100.01016.39
7.3.180.0050.01016.35
7.3.170.0150.00016.27
7.3.160.0090.01216.22
7.3.120.0070.00714.77
7.3.10.0120.00916.25
7.3.00.0090.00616.45
7.2.330.0030.01416.68
7.2.320.0100.01316.44
7.2.310.0090.01016.44
7.2.300.0130.00916.24
7.2.290.0120.00316.44
7.2.130.0060.00616.32
7.2.120.0130.01016.44
7.2.110.0090.00316.42
7.2.100.0190.00616.78
7.2.90.0110.00716.93
7.2.80.0150.00416.85
7.2.70.0220.00316.57
7.2.60.0150.00716.68
7.2.50.0150.01216.56
7.2.40.0030.00916.37
7.2.30.0110.00916.57
7.2.20.0140.01117.04
7.2.10.0100.00616.54
7.2.00.0080.00718.11
7.1.250.0040.01615.25
7.1.100.0160.00716.15
7.1.70.0000.00816.99
7.1.60.0140.01019.82
7.1.50.0130.01016.96
7.1.00.0030.07022.54
7.0.200.0090.00616.43
7.0.140.0100.06722.10
7.0.60.0170.07721.82
7.0.50.0030.04017.91
7.0.40.0100.08320.19
7.0.30.0230.04020.17
7.0.20.0330.07720.18
7.0.10.0030.05020.00
7.0.00.0070.04320.16
5.6.280.0070.07021.09
5.6.210.0130.07320.46
5.6.200.0100.06718.17
5.6.190.0030.05720.77
5.6.180.0070.04720.27
5.6.170.0230.04720.49
5.6.160.0070.08320.59
5.6.150.0130.07318.11
5.6.140.0070.03718.16
5.6.130.0030.08318.11
5.6.120.0100.08321.01
5.6.110.0070.09021.13
5.6.100.0070.04021.02
5.6.90.0100.08020.95
5.6.80.0070.08020.37
5.5.350.0130.03720.29
5.5.340.0170.07317.95
5.5.330.0070.04720.29
5.5.320.0270.07320.30
5.5.310.0170.04320.41
5.5.300.0000.04717.92
5.5.290.0070.04017.91
5.5.280.0230.06720.84
5.5.270.0070.08320.95
5.5.260.0030.07320.79
5.5.250.0170.07320.54
5.5.240.0130.06720.11
5.4.450.2870.03719.39
5.4.440.3430.04319.31
5.4.430.3330.04319.22
5.4.420.3400.03319.36
5.4.410.3170.03319.28
5.4.400.0070.07019.06
5.4.390.3800.04019.16
5.4.380.3830.04319.02
5.4.370.3170.03719.12
5.4.360.2900.04018.87
5.4.350.3170.03319.15
5.4.340.3330.04018.96
5.4.320.3570.04019.13
5.4.310.4030.04019.10
5.4.300.3200.04019.16
5.4.290.3930.03719.15
5.4.280.3800.03719.16
5.4.270.3930.04319.06
5.4.260.3670.04019.15
5.4.250.3700.04018.89
5.4.240.3530.04018.89
5.4.230.3200.03719.12
5.4.220.3470.04019.11
5.4.210.3270.03319.11
5.4.200.4130.03718.85
5.4.190.3870.04019.07
5.4.180.4170.03719.14
5.4.170.4070.04018.84
5.4.160.3870.03718.86
5.4.150.4100.04018.91
5.4.140.3970.03716.32
5.4.130.4000.04016.32
5.4.120.3830.03716.41
5.4.110.4000.03716.49
5.4.100.4070.03316.13
5.4.90.3970.03716.47
5.4.80.3530.03316.23
5.4.70.3970.03716.32
5.4.60.3900.04016.39
5.4.50.2770.04016.29
5.4.40.3570.03316.12
5.4.30.3200.03016.25
5.4.20.3430.03716.43
5.4.10.3600.04316.13
5.4.00.3370.04015.79
5.3.290.3370.03714.64
5.3.280.3170.03714.52
5.3.270.4130.03714.54
5.3.260.4070.03714.54
5.3.250.4070.03314.55
5.3.240.4000.03714.53
5.3.230.4000.03714.52
5.3.220.3670.04014.57
5.3.210.4100.03714.48
5.3.200.4000.04314.46
5.3.190.4070.03714.50
5.3.180.3800.03714.52
5.3.170.3970.04714.64
5.3.160.3830.03714.48
5.3.150.4930.03014.50
5.3.140.3230.04014.45
5.3.130.3400.03314.36
5.3.120.3330.04014.36
5.3.110.3400.03714.33
5.3.100.3470.03713.91
5.3.90.3430.03013.98
5.3.80.3700.03713.83
5.3.70.2800.03313.95
5.3.60.3100.02713.94
5.3.50.2630.04313.96
5.3.40.3000.03713.96
5.3.30.3100.03313.84
5.3.20.2800.03313.51
5.3.10.2970.04013.57
5.3.00.3070.03013.45
5.2.170.2430.03011.13
5.2.160.2300.02711.15
5.2.150.2530.03011.13
5.2.140.2600.02311.11
5.2.130.2670.02311.09
5.2.120.2530.02711.07
5.2.110.2670.02711.04
5.2.100.2730.02711.18
5.2.90.2600.03310.92
5.2.80.2230.03011.08
5.2.70.2530.02710.97
5.2.60.2630.02310.98
5.2.50.2600.03010.98
5.2.40.2570.03010.89
5.2.30.2330.03311.12
5.2.20.2230.02711.03
5.2.10.2500.02310.81
5.2.00.2070.03310.59
5.1.60.2230.0239.89
5.1.50.2400.0309.98
5.1.40.2300.0239.98
5.1.30.2400.03010.37
5.1.20.2400.03010.41
5.1.10.2200.0279.96
5.1.00.2330.03010.07
5.0.50.1300.0208.55
5.0.40.1370.0238.47
5.0.30.1430.0308.21
5.0.20.1270.0208.19
5.0.10.1070.0238.22
5.0.00.1030.0308.12
4.4.90.1070.0136.54
4.4.80.1200.0136.54
4.4.70.1370.0176.54
4.4.60.1300.0206.54
4.4.50.1370.0176.54
4.4.40.1400.0276.54
4.4.30.1430.0176.54
4.4.20.1370.0136.54
4.4.10.1300.0176.54
4.4.00.1070.0276.54
4.3.110.1430.0136.54
4.3.100.1500.0206.54
4.3.90.1300.0136.54
4.3.80.1130.0276.54
4.3.70.1300.0206.54
4.3.60.1430.0176.54
4.3.50.1570.0206.54
4.3.40.1300.0236.54
4.3.30.0870.0176.54
4.3.20.0870.0236.54
4.3.10.0630.0276.54
4.3.00.0770.0206.54

preferences:
42.46 ms | 401 KiB | 5 Q