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)
8.3.60.0070.00718.30
8.3.50.0150.00017.19
8.3.40.0040.01218.84
8.3.30.0060.00918.76
8.3.20.0000.00818.66
8.3.10.0050.00318.48
8.3.00.0060.00319.13
8.2.180.0140.00416.50
8.2.170.0140.00022.96
8.2.160.0030.01218.66
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0000.00726.16
8.2.120.0040.01117.50
8.2.110.0090.00020.52
8.2.100.0080.00417.78
8.2.90.0050.00218.09
8.2.80.0040.00417.97
8.2.70.0030.00617.63
8.2.60.0040.00417.50
8.2.50.0000.00817.80
8.2.40.0040.00419.22
8.2.30.0040.00717.49
8.2.20.0060.00317.50
8.2.10.0000.00817.41
8.2.00.0040.00417.42
8.1.280.0060.00925.92
8.1.270.0090.00921.94
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0130.00021.96
8.1.230.0080.00422.83
8.1.220.0000.00817.74
8.1.210.0030.00518.77
8.1.200.0030.00617.23
8.1.190.0040.00417.11
8.1.180.0030.00818.10
8.1.170.0040.00418.75
8.1.160.0000.00718.99
8.1.150.0040.00418.60
8.1.140.0020.00517.36
8.1.130.0000.00719.08
8.1.120.0080.00017.43
8.1.110.0040.00417.28
8.1.100.0070.00017.41
8.1.90.0050.00317.40
8.1.80.0030.00317.28
8.1.70.0070.00017.36
8.1.60.0000.00817.51
8.1.50.0070.00017.25
8.1.40.0030.00517.48
8.1.30.0040.00417.62
8.1.20.0050.00317.54
8.1.10.0000.00717.46
8.1.00.0040.00417.32
8.0.300.0000.00720.02
8.0.290.0080.00016.75
8.0.280.0070.00018.55
8.0.270.0000.00717.14
8.0.260.0030.00316.80
8.0.250.0040.00416.91
8.0.240.0050.00316.93
8.0.230.0030.00316.80
8.0.220.0050.00316.74
8.0.210.0040.00416.86
8.0.200.0000.00816.89
8.0.190.0030.00316.79
8.0.180.0040.00416.73
8.0.170.0000.00716.64
8.0.160.0000.00716.75
8.0.150.0040.00416.80
8.0.140.0050.00216.66
8.0.130.0060.00013.32
8.0.120.0040.00416.74
8.0.110.0000.00716.68
8.0.100.0040.00416.80
8.0.90.0050.00316.71
8.0.80.0100.00616.74
8.0.70.0000.00716.79
8.0.60.0080.00016.67
8.0.50.0040.00416.73
8.0.30.0030.01316.86
8.0.20.0080.01116.99
8.0.10.0000.00716.92
8.0.00.0140.00616.74
7.4.330.0000.00512.86
7.4.320.0060.00016.38
7.4.300.0030.00316.33
7.4.290.0070.00016.44
7.4.280.0030.00516.52
7.4.270.0000.00716.54
7.4.260.0030.00313.19
7.4.250.0050.00316.41
7.4.240.0030.00316.48
7.4.230.0030.00316.61
7.4.220.0180.00316.51
7.4.210.0170.00316.61
7.4.200.0030.00316.62
7.4.190.0060.00316.57
7.4.160.0070.00716.27
7.4.150.0080.01216.51
7.4.140.0190.00617.86
7.4.130.0190.00316.50
7.4.120.0130.01016.55
7.4.110.0040.01816.59
7.4.100.0170.00016.60
7.4.90.0060.01216.48
7.4.80.0100.00719.39
7.4.70.0120.00916.36
7.4.60.0150.00016.33
7.4.50.0000.00516.14
7.4.40.0000.01516.48
7.4.30.0140.00316.47
7.4.00.0070.01014.88
7.3.330.0080.00013.02
7.3.320.0060.00013.14
7.3.310.0030.00316.25
7.3.300.0000.00716.23
7.3.290.0070.00916.21
7.3.280.0000.01416.16
7.3.270.0160.00416.51
7.3.260.0130.00416.22
7.3.240.0060.01016.53
7.3.230.0060.01016.44
7.3.210.0090.00716.23
7.3.200.0090.00616.14
7.3.190.0080.00816.24
7.3.180.0110.00716.34
7.3.170.0060.01616.48
7.3.160.0030.01216.13
7.3.120.0080.00814.99
7.3.10.0040.01116.84
7.3.00.0030.00616.52
7.2.330.0100.01016.68
7.2.320.0130.00316.30
7.2.310.0130.00316.42
7.2.300.0100.00716.50
7.2.290.0030.01416.54
7.2.130.0030.00616.85
7.2.120.0060.00616.71
7.2.110.0060.01216.39
7.2.100.0100.00716.60
7.2.90.0090.00616.96
7.2.80.0070.00716.72
7.2.70.0070.00316.50
7.2.60.0060.00816.88
7.2.50.0100.00316.71
7.2.40.0070.00716.98
7.2.30.0080.00416.92
7.2.20.0060.00816.65
7.2.10.0030.00716.77
7.2.00.0140.00818.02
7.1.250.0040.00715.81
7.1.100.0030.00818.24
7.1.70.0030.01316.72
7.1.60.0140.01119.25
7.1.50.0110.00416.69
7.1.00.0000.04322.31
7.0.200.0030.00616.49
7.0.140.0030.07321.95
7.0.120.0100.06722.16
7.0.60.0030.05719.93
7.0.50.0030.04017.84
7.0.40.0200.07720.04
7.0.30.0230.05720.17
7.0.20.0370.07320.33
7.0.10.0070.08720.26
7.0.00.0100.07020.16
5.6.280.0000.07321.03
5.6.210.0130.07320.46
5.6.200.0100.07318.18
5.6.190.0070.07020.61
5.6.180.0330.03320.41
5.6.170.0230.05320.44
5.6.160.0070.07020.38
5.6.150.0030.08318.18
5.6.140.0070.08318.15
5.6.130.0270.02718.20
5.6.120.0030.09021.12
5.6.110.0030.07320.88
5.6.100.0070.08721.09
5.6.90.0070.08320.94
5.6.80.0030.03720.41
5.5.350.0330.04020.48
5.5.340.0130.07317.91
5.5.330.0100.06020.41
5.5.320.2800.04020.15
5.5.310.0330.06020.32
5.5.300.0200.03317.89
5.5.290.0100.08018.01
5.5.280.0030.08320.97
5.5.270.0100.08720.84
5.5.260.0030.06020.76
5.5.250.0000.05020.69
5.5.240.0100.03320.18
5.4.450.0070.03719.11
5.4.440.0170.03719.46
5.4.430.0070.07019.46
5.4.420.0100.06019.23
5.4.410.0070.07319.39
5.4.400.0130.07319.13
5.4.390.0100.07019.15
5.4.380.0070.07318.92
5.4.370.0130.03319.15
5.4.360.0030.06319.07
5.4.350.0030.07719.18
5.4.340.0070.04019.08
5.4.320.0030.07319.08
5.4.310.0030.06018.77
5.4.300.0070.06718.79
5.4.290.0130.06018.92
5.4.280.0130.07019.17
5.4.270.0170.06319.08
5.4.260.0100.07019.08
5.4.250.0070.07318.78
5.4.240.0070.07318.78
5.4.230.0070.07318.80
5.4.220.0100.07019.15
5.4.210.0070.03719.00
5.4.200.0070.07318.93
5.4.190.0030.04718.91
5.4.180.0070.03718.79
5.4.170.0130.03719.16
5.4.160.0130.07019.12
5.4.150.0030.04019.09
5.4.140.0070.03316.48
5.4.130.0070.03316.21
5.4.120.0030.03716.39
5.4.110.0100.03716.23
5.4.100.0000.04016.25
5.4.90.0030.03716.17
5.4.80.0030.07316.25
5.4.70.0070.05716.41
5.4.60.0030.07316.22
5.4.50.0070.04716.21
5.4.40.0000.04716.57
5.4.30.0100.03316.21
5.4.20.0030.08016.34
5.4.10.0100.05316.46
5.4.00.0000.08315.80
5.3.290.0070.04314.59
5.3.280.0070.06714.51
5.3.270.0000.04314.54
5.3.260.0100.07014.69
5.3.250.0070.05314.42
5.3.240.0100.03314.39
5.3.230.0030.04014.53
5.3.220.0070.04714.47
5.3.210.0030.05714.38
5.3.200.0030.06314.65
5.3.190.0070.04714.53
5.3.180.0000.04314.39
5.3.170.0030.08014.48
5.3.160.0000.08014.43
5.3.150.0070.07714.51
5.3.140.0070.07714.45
5.3.130.0030.07014.46
5.3.120.0100.06714.50
5.3.110.0030.04014.46
5.3.100.0100.08313.93
5.3.90.0030.04013.91
5.3.80.0030.05713.98
5.3.70.0100.03313.94
5.3.60.0030.06313.94
5.3.50.0130.03013.92
5.3.40.0100.07013.87
5.3.30.0070.07313.88
5.3.20.0100.03313.61
5.3.10.0170.06313.64
5.3.00.0100.05313.58
5.2.170.0100.02311.05
5.2.160.0070.02711.11
5.2.150.0170.03311.11
5.2.140.0030.03011.22
5.2.130.0000.03311.04
5.2.120.0000.06011.09
5.2.110.0030.03711.10
5.2.100.0030.04711.08
5.2.90.0000.04311.09
5.2.80.0000.04011.10
5.2.70.0030.04710.99
5.2.60.0000.04711.05
5.2.50.0070.06310.96
5.2.40.0000.06311.16
5.2.30.0070.03010.93
5.2.20.0030.03711.04
5.2.10.0100.04010.90
5.2.00.0030.05710.70
5.1.60.0030.04310.07
5.1.50.0030.0339.97
5.1.40.0000.03310.14
5.1.30.0100.05310.38
5.1.20.0070.05310.34
5.1.10.0070.05010.04
5.1.00.0000.05010.14
5.0.50.0000.0278.55
5.0.40.0030.0238.35
5.0.30.0070.0538.19
5.0.20.0000.0238.12
5.0.10.0070.0408.21
5.0.00.0030.0308.14
4.4.90.0000.0377.89
4.4.80.0070.0207.89
4.4.70.0030.0337.89
4.4.60.0000.0207.89
4.4.50.0000.0207.89
4.4.40.0030.0277.89
4.4.30.0070.0177.89
4.4.20.0030.0177.89
4.4.10.0000.0207.89
4.4.00.0030.0237.89
4.3.110.0000.0307.89
4.3.100.0000.0277.89
4.3.90.0000.0207.89
4.3.80.0000.0377.89
4.3.70.0070.0137.89
4.3.60.0000.0307.89
4.3.50.0070.0207.89
4.3.40.0000.0307.89
4.3.30.0000.0237.89
4.3.20.0000.0177.89
4.3.10.0000.0377.89
4.3.00.0030.0377.89

preferences:
51.28 ms | 401 KiB | 5 Q