3v4l.org

run code in 300+ PHP versions simultaneously
<?php mb_internal_encoding('UTF-8'); echo 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)
8.3.60.0070.01016.38
8.3.50.0100.00817.93
8.3.40.0080.00818.85
8.3.30.0110.00718.69
8.3.20.0040.00418.70
8.3.10.0040.00418.44
8.3.00.0070.00417.50
8.2.180.0110.00816.32
8.2.170.0070.00722.96
8.2.160.0090.00920.57
8.2.150.0070.00324.18
8.2.140.0080.00024.66
8.2.130.0000.00826.16
8.2.120.0000.00721.03
8.2.110.0030.00622.30
8.2.100.0060.00617.53
8.2.90.0040.00417.50
8.2.80.0070.00718.37
8.2.70.0030.00517.50
8.2.60.0000.00817.63
8.2.50.0080.00018.04
8.2.40.0050.00319.95
8.2.30.0000.00817.54
8.2.20.0070.00417.61
8.2.10.0080.00017.63
8.2.00.0040.00417.61
8.1.280.0120.00625.92
8.1.270.0000.00723.99
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0070.00321.23
8.1.230.0070.00420.84
8.1.220.0030.00518.39
8.1.210.0030.00518.77
8.1.200.0030.00517.23
8.1.190.0000.00817.10
8.1.180.0000.00918.10
8.1.170.0040.00417.62
8.1.160.0000.00718.84
8.1.150.0070.00018.61
8.1.140.0040.00417.42
8.1.130.0000.00617.69
8.1.120.0000.00717.38
8.1.110.0040.00417.35
8.1.100.0000.00717.41
8.1.90.0000.00817.32
8.1.80.0030.00317.29
8.1.70.0040.00417.34
8.1.60.0040.00417.39
8.1.50.0030.00617.34
8.1.40.0000.00717.48
8.1.30.0030.00517.59
8.1.20.0070.00317.58
8.1.10.0070.00017.45
8.1.00.0000.00717.45
8.0.300.0050.00218.77
8.0.290.0000.00716.75
8.0.280.0080.00018.57
8.0.270.0000.00717.30
8.0.260.0030.00316.84
8.0.250.0040.00416.84
8.0.240.0070.00016.96
8.0.230.0090.00016.88
8.0.220.0070.00016.84
8.0.210.0040.00416.79
8.0.200.0030.00316.89
8.0.190.0080.00316.77
8.0.180.0000.00716.85
8.0.170.0060.00316.77
8.0.160.0050.00316.84
8.0.150.0080.00016.72
8.0.140.0000.00716.78
8.0.130.0000.00513.33
8.0.120.0030.00616.78
8.0.110.0080.00016.79
8.0.100.0000.00716.88
8.0.90.0000.00716.69
8.0.80.0120.00916.84
8.0.70.0040.00416.73
8.0.60.0000.00716.68
8.0.50.0040.00416.70
8.0.30.0090.00917.17
8.0.20.0130.00517.04
8.0.10.0040.00416.77
8.0.00.0110.00616.81
7.4.330.0000.00512.81
7.4.320.0030.00316.44
7.4.300.0030.00316.52
7.4.290.0030.00316.50
7.4.280.0070.00016.38
7.4.270.0040.00416.54
7.4.260.0030.00313.14
7.4.250.0000.00816.39
7.4.240.0040.00416.45
7.4.230.0000.00716.61
7.4.220.0100.01016.42
7.4.210.0100.01016.39
7.4.200.0030.00316.60
7.4.190.0030.00316.38
7.4.160.0090.00616.53
7.4.150.0070.01016.26
7.4.140.0110.00716.43
7.4.130.0090.00916.32
7.4.120.0120.00616.25
7.4.110.0120.00916.49
7.4.100.0000.01716.30
7.4.90.0170.00016.33
7.4.80.0060.00919.39
7.4.70.0030.01216.36
7.4.60.0100.00616.27
7.4.50.0050.00016.52
7.4.40.0030.01016.35
7.4.30.0130.00316.40
7.4.00.0040.00914.71
7.3.330.0060.00013.08
7.3.320.0030.00313.01
7.3.310.0030.00316.28
7.3.300.0030.00315.97
7.3.290.0050.01016.22
7.3.280.0100.00616.19
7.3.270.0120.00616.07
7.3.260.0110.01116.52
7.3.250.0120.01016.27
7.3.240.0090.00816.16
7.3.230.0040.01316.10
7.3.210.0110.00916.22
7.3.200.0120.00416.20
7.3.190.0060.01516.22
7.3.180.0090.00616.46
7.3.170.0070.01016.10
7.3.160.0120.00916.00
7.3.120.0060.00914.93
7.3.10.0090.00316.25
7.3.00.0030.00616.10
7.2.330.0050.01116.22
7.2.320.0100.01016.53
7.2.310.0190.00316.45
7.2.300.0070.01016.63
7.2.290.0100.00716.57
7.2.130.0070.01416.44
7.2.120.0040.01116.61
7.2.110.0000.01216.48
7.2.100.0110.00416.22
7.2.90.0090.00316.36
7.2.80.0120.00816.46
7.2.70.0100.00716.68
7.2.60.0180.01416.69
7.2.50.0160.00816.44
7.2.40.0120.00916.43
7.2.30.0160.00616.20
7.2.20.0130.00316.52
7.2.10.0120.00416.43
7.2.00.0060.00918.02
7.1.250.0080.00315.36
7.1.100.0030.00517.66
7.1.70.0000.01117.19
7.1.60.0060.01019.30
7.1.50.0070.01416.79
7.1.00.0030.06722.42
7.0.200.0120.00316.50
7.0.140.0000.07322.19
7.0.120.0000.07722.04
7.0.60.0070.07019.84
7.0.50.0070.08317.63
7.0.40.0030.04320.21
7.0.30.0530.06020.17
7.0.20.0230.03720.12
7.0.10.0030.04720.00
7.0.00.0030.09020.16
5.6.280.0030.07321.01
5.6.210.0100.06720.55
5.6.200.0100.08018.19
5.6.190.0170.07020.77
5.6.180.0330.04320.42
5.6.170.0270.08720.47
5.6.160.0030.09020.32
5.6.150.0030.04318.11
5.6.140.0030.08718.20
5.6.130.0070.08018.15
5.6.120.0000.06021.11
5.6.110.0100.08720.88
5.6.100.0030.07720.97
5.6.90.0100.08021.10
5.6.80.0030.08320.36
5.6.70.4770.04020.36
5.5.350.0270.07320.43
5.5.340.0100.04018.02
5.5.330.0170.07320.13
5.5.320.0030.08320.13
5.5.310.0270.07720.31
5.5.300.0030.04017.91
5.5.290.0070.07317.88
5.5.280.0030.08720.65
5.5.270.0070.03720.86
5.5.260.0070.06320.78
5.5.250.0100.03720.68
5.5.240.0300.06320.12
5.4.450.0030.04019.52
5.4.440.0100.03319.45
5.4.430.0100.03019.24
5.4.420.0070.03719.41
5.4.410.0000.04019.24
5.4.400.0030.03719.18
5.4.390.0000.04019.15
5.4.380.0070.03319.17
5.4.370.0070.06719.16
5.4.360.0100.07719.18
5.4.350.0100.05319.08
5.4.340.0100.07319.08
5.4.320.0070.04718.92
5.4.310.0100.05019.14
5.4.300.0130.07019.15
5.4.290.0100.05318.79
5.4.280.0030.05019.18
5.4.270.0070.06018.92
5.4.260.0070.07718.78
5.4.250.0130.06719.17
5.4.240.0070.05019.11
5.4.230.0230.06319.15
5.4.220.0070.07718.93
5.4.210.0070.05018.99
5.4.200.0100.07718.78
5.4.190.0070.04018.77
5.4.180.0100.07018.79
5.4.170.0030.07018.77
5.4.160.0030.08019.06
5.4.150.0100.07319.17
5.4.140.0100.07016.48
5.4.130.0070.07316.33
5.4.120.0070.05316.21
5.4.110.0030.06016.44
5.4.100.0030.07716.43
5.4.90.0000.07716.37
5.4.80.0070.07716.39
5.4.70.0070.04716.41
5.4.60.0170.06716.32
5.4.50.0070.05716.20
5.4.40.0100.07316.38
5.4.30.0070.06016.38
5.4.20.0070.05016.24
5.4.10.0170.03716.24
5.4.00.0000.08015.69
5.3.290.0030.08314.54
5.3.280.0030.05714.53
5.3.270.0130.06714.48
5.3.260.0100.06014.54
5.3.250.0170.07014.54
5.3.240.0130.05714.57
5.3.230.0100.07314.52
5.3.220.0030.05314.54
5.3.210.0100.07314.50
5.3.200.0170.07014.54
5.3.190.0000.07714.46
5.3.180.0100.05014.48
5.3.170.0170.06314.34
5.3.160.0030.08014.48
5.3.150.0070.06314.53
5.3.140.0170.06714.45
5.3.130.0100.04714.46
5.3.120.0130.06314.52
5.3.110.0100.07314.42
5.3.100.0000.06313.96
5.3.90.0030.08013.91
5.3.80.0030.07713.80
5.3.70.0070.07013.95
5.3.60.0070.06313.93
5.3.50.0030.07013.73
5.3.40.0030.07314.03
5.3.30.0070.04013.87
5.3.20.0030.05713.63
5.3.10.0070.06713.44
5.3.00.0070.07013.45
5.2.170.0030.06711.15
5.2.160.0130.05711.13
5.2.150.0070.04311.13
5.2.140.0030.06711.08
5.2.130.0000.06011.26
5.2.120.0100.06011.10
5.2.110.0030.04311.25
5.2.100.0030.05011.18
5.2.90.0000.04310.95
5.2.80.0030.05711.02
5.2.70.0100.04311.24
5.2.60.0030.06310.87
5.2.50.0100.03310.96
5.2.40.0030.03311.07
5.2.30.0030.06011.12
5.2.20.0070.06310.96
5.2.10.0070.05310.73
5.2.00.0000.04010.56
5.1.60.0000.03310.15
5.1.50.0000.05010.14
5.1.40.0030.05710.01
5.1.30.0030.05710.33
5.1.20.0030.04710.35
5.1.10.0030.04710.04
5.1.00.0070.05010.21
5.0.50.0030.0408.53
5.0.40.0030.0278.40
5.0.30.0100.0638.29
5.0.20.0070.0378.26
5.0.10.0030.0408.18
5.0.00.0070.0338.29
4.4.90.0030.0207.88
4.4.80.0030.0237.88
4.4.70.0000.0307.88
4.4.60.0070.0177.88
4.4.50.0070.0207.88
4.4.40.0070.0477.88
4.4.30.0030.0277.88
4.4.20.0030.0337.88
4.4.10.0000.0307.88
4.4.00.0000.0437.88
4.3.110.0030.0337.88
4.3.100.0030.0207.88
4.3.90.0030.0237.88
4.3.80.0000.0407.88
4.3.70.0030.0207.88
4.3.60.0030.0377.88
4.3.50.0070.0277.88
4.3.40.0000.0577.88
4.3.30.0030.0337.88
4.3.20.0030.0237.88
4.3.10.0000.0377.88
4.3.00.0000.0307.88

preferences:
49.21 ms | 401 KiB | 5 Q