3v4l.org

run code in 300+ PHP versions simultaneously
<?php mb_internal_encoding('UTF-8'); echo 'Subject: ', mb_encode_mimeheader('❤', 'UTF-8', 'B'); echo 'Subject: '."=?utf-8?B?" . base64_encode("❤") . "?=";

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)
8.3.60.0120.00318.30
8.3.50.0110.00821.01
8.3.40.0140.00018.67
8.3.30.0100.00319.11
8.3.20.0040.00420.20
8.3.10.0000.00822.10
8.3.00.0050.00322.52
8.2.180.0090.00916.32
8.2.170.0110.00422.96
8.2.160.0070.00719.08
8.2.150.0080.00024.18
8.2.140.0000.00824.66
8.2.130.0170.00026.16
8.2.120.0040.00419.36
8.2.110.0070.00320.29
8.2.100.0040.00717.69
8.2.90.0080.00019.17
8.2.80.0080.00017.97
8.2.70.0060.00317.36
8.2.60.0090.00017.92
8.2.50.0000.00818.07
8.2.40.0000.00919.95
8.2.30.0080.00018.00
8.2.20.0040.00417.50
8.2.10.0000.00717.60
8.2.00.0000.00817.52
8.1.280.0030.01225.92
8.1.270.0040.00422.05
8.1.260.0000.00726.35
8.1.250.0080.00028.09
8.1.240.0080.00022.27
8.1.230.0000.01017.52
8.1.220.0050.00317.74
8.1.210.0080.00018.77
8.1.200.0030.00617.23
8.1.190.0000.00817.43
8.1.180.0060.00318.72
8.1.170.0080.00018.69
8.1.160.0050.00222.05
8.1.150.0030.00618.55
8.1.140.0040.00417.40
8.1.130.0030.00317.67
8.1.120.0070.00017.36
8.1.110.0050.00317.46
8.1.100.0030.00517.37
8.1.90.0020.00517.46
8.1.80.0030.00317.36
8.1.70.0080.00017.42
8.1.60.0080.00017.43
8.1.50.0020.00517.55
8.1.40.0040.00417.50
8.1.30.0040.00417.58
8.1.20.0030.00617.54
8.1.10.0040.00417.43
8.1.00.0090.00017.40
8.0.300.0080.00018.77
8.0.290.0040.00416.75
8.0.280.0030.00318.47
8.0.270.0070.00017.25
8.0.260.0000.00816.81
8.0.250.0000.00616.85
8.0.240.0050.00316.98
8.0.230.0000.00716.80
8.0.220.0030.00316.83
8.0.210.0030.00316.91
8.0.200.0060.00016.84
8.0.190.0000.00816.83
8.0.180.0000.00716.88
8.0.170.0000.00716.88
8.0.160.0040.00416.90
8.0.150.0040.00416.69
8.0.140.0070.00016.88
8.0.130.0030.00313.36
8.0.120.0000.00816.80
8.0.110.0000.00816.79
8.0.100.0000.00816.77
8.0.90.0000.00816.73
8.0.80.0090.00616.83
8.0.70.0040.00416.95
8.0.60.0070.00016.76
8.0.50.0030.00416.69
8.0.30.0160.00817.00
8.0.20.0090.01117.40
8.0.10.0000.00716.71
8.0.00.0120.00516.65
7.4.330.0000.00515.02
7.4.320.0030.00316.45
7.4.300.0000.00716.41
7.4.290.0020.00516.55
7.4.280.0060.00316.42
7.4.270.0060.00016.43
7.4.260.0030.00316.47
7.4.250.0040.00416.36
7.4.240.0050.00216.50
7.4.230.0000.00616.53
7.4.220.0100.00716.42
7.4.210.0090.00716.46
7.4.200.0000.00716.60
7.4.190.0040.00416.48
7.4.160.0060.01016.48
7.4.150.0080.00817.40
7.4.140.0110.00917.86
7.4.130.0100.00716.43
7.4.120.0090.00916.53
7.4.110.0030.01316.45
7.4.100.0070.01116.45
7.4.90.0090.00916.43
7.4.80.0100.01019.39
7.4.70.0080.00916.30
7.4.60.0120.00616.25
7.4.50.0040.00416.61
7.4.40.0060.00622.77
7.4.30.0140.00416.50
7.4.00.0060.00914.74
7.3.330.0040.00413.14
7.3.320.0000.00513.24
7.3.310.0000.00616.32
7.3.300.0060.00016.29
7.3.290.0080.00616.30
7.3.280.0110.00416.30
7.3.270.0040.01417.40
7.3.260.0060.01016.50
7.3.250.0090.00816.21
7.3.240.0080.00816.24
7.3.230.0130.00316.39
7.3.210.0070.01016.51
7.3.200.0130.00919.39
7.3.190.0100.00716.36
7.3.180.0120.00316.54
7.3.170.0090.00616.32
7.3.160.0060.00916.27
7.3.120.0140.00014.52
7.2.330.0080.00816.59
7.2.320.0060.01016.61
7.2.310.0080.00816.51
7.2.300.0070.01116.66
7.2.290.0060.01216.39
7.2.60.0040.00816.78
7.2.00.0090.00319.27
7.1.200.0160.00315.45
7.1.100.0040.00818.00
7.1.70.0000.00717.16
7.1.60.0140.01119.82
7.1.50.0100.01416.80
7.1.00.0100.07322.45
7.0.200.0030.00316.52
7.0.140.0000.07722.13
7.0.90.0100.08319.85
7.0.80.0070.07720.11
7.0.70.0270.08319.79
7.0.60.0400.07019.94
7.0.50.0100.08320.25
7.0.40.0030.08320.04
7.0.30.0130.06720.13
7.0.20.0070.04020.09
7.0.10.0000.08720.08
7.0.00.0200.07020.11
5.6.280.0000.07721.09
5.6.230.0070.08320.66
5.6.220.0070.09020.64
5.6.210.0130.07320.56
5.6.200.0130.08020.95
5.6.190.0100.07721.10
5.6.180.0070.08320.94
5.6.170.0030.08321.11
5.6.160.0170.08021.02
5.6.150.0170.07021.02
5.6.140.0130.03721.05
5.6.130.0130.07721.05
5.6.120.0000.05021.09
5.6.110.0130.06321.02
5.6.100.0130.05021.02
5.6.90.0100.08020.99
5.6.80.0000.05320.51
5.6.70.0030.06320.42
5.6.60.0100.07720.36
5.6.50.0100.08020.33
5.6.40.0130.07320.33
5.6.30.0170.06720.44
5.6.20.0070.08020.46
5.6.10.0030.07720.28
5.6.00.0070.04320.27
5.5.370.0100.08020.41
5.5.360.0100.08720.47
5.5.350.0170.07320.46
5.5.340.0100.07720.92
5.5.330.0170.05320.79
5.5.320.0130.07320.91
5.5.310.0070.04320.76
5.5.300.0200.07020.86
5.5.290.0070.05320.88
5.5.280.0070.08020.72
5.5.270.0170.07320.90
5.5.260.0070.05720.74
5.5.250.0070.04720.70
5.5.240.0070.07720.11
5.5.230.0130.07720.20
5.5.220.0000.08320.25
5.5.210.0170.06320.23
5.5.200.0130.07320.20
5.5.190.0070.08020.25
5.5.180.0030.08320.21
5.5.160.0130.07020.21
5.5.150.0130.07020.14
5.5.140.0070.04320.17
5.5.130.0000.08020.13
5.5.120.0030.07720.20
5.5.110.0070.06020.21
5.5.100.0100.08320.10
5.5.90.0170.06320.08
5.5.80.0070.07319.94
5.5.70.0070.06020.05
5.5.60.0070.04320.04
5.5.50.0100.08019.93
5.5.40.0030.07720.04
5.5.30.0170.06019.91
5.5.20.0100.07720.07
5.5.10.0070.04020.07
5.5.00.0030.08720.04
5.4.450.0100.07319.55
5.4.440.0070.05019.44
5.4.430.0130.04719.28
5.4.420.0030.04019.30
5.4.410.0170.06019.22
5.4.400.0130.06318.91
5.4.390.0070.03719.04
5.4.380.0070.06718.79
5.4.370.0070.07718.81
5.4.360.0070.07719.12
5.4.350.0070.07019.05
5.4.340.0030.07718.98
5.4.320.0030.04719.23
5.4.310.0070.08019.07
5.4.300.0200.06319.11
5.4.290.0070.04019.05
5.4.280.0030.07019.05
5.4.270.0230.05719.12
5.4.260.0200.06719.14
5.4.250.0030.08318.99
5.4.240.0100.07019.14
5.4.230.0030.08319.11
5.4.220.0100.07019.07
5.4.210.0130.07319.03
5.4.200.0170.06019.11
5.4.190.0070.08019.21
5.4.180.0070.07319.10
5.4.170.0070.07719.06
5.4.160.0070.05319.05
5.4.150.0030.07719.07
5.4.140.0100.07316.19
5.4.130.0070.04016.35
5.4.120.0070.06716.25
5.4.110.0070.07716.38
5.4.100.0100.05316.28
5.4.90.0170.06016.23
5.4.80.0000.06316.32
5.4.70.0030.07716.25
5.4.60.0070.06716.40
5.4.50.0100.07316.28
5.4.40.0130.06716.37
5.4.30.0100.07316.18
5.4.20.0070.07316.38
5.4.10.0030.08316.38
5.4.00.0100.07315.81
5.3.290.0100.07014.67
5.3.280.0030.06314.57
5.3.270.0100.06714.61
5.3.260.0130.07014.50
5.3.250.0070.07714.61
5.3.240.0100.07014.54
5.3.230.0070.07714.59
5.3.220.0100.05714.51
5.3.210.0170.07314.55
5.3.200.0130.06314.52
5.3.190.0130.06314.50
5.3.180.0170.06314.55
5.3.170.0030.07014.54
5.3.160.0130.06714.41
5.3.150.0030.07314.54
5.3.140.0130.07014.37
5.3.130.0170.05014.53
5.3.120.0070.07314.50
5.3.110.0100.07314.42
5.3.100.0130.07313.91
5.3.90.0000.05713.98
5.3.80.0130.03013.79
5.3.70.0000.08013.79
5.3.60.0070.04013.98
5.3.50.0000.05313.93
5.3.40.0170.07013.71
5.3.30.0030.05313.86
5.3.20.0070.07013.71
5.3.10.0070.07313.71
5.3.00.0030.06313.71
5.2.170.0030.04013.71
5.2.160.0000.03713.71
5.2.150.0070.06013.71
5.2.140.0000.04013.71
5.2.130.0100.05713.71
5.2.120.0070.06013.71
5.2.110.0070.06313.71
5.2.100.0030.05713.71
5.2.90.0070.06313.71
5.2.80.0070.05713.71
5.2.70.0130.05713.71
5.2.60.0030.06313.71
5.2.50.0000.05713.71
5.2.40.0030.04013.71
5.2.30.0070.06313.71
5.2.20.0070.06013.71
5.2.10.0070.06013.71
5.2.00.0000.05713.71
5.1.60.0030.02713.71
5.1.50.0000.03313.71
5.1.40.0070.05013.71
5.1.30.0070.04713.71
5.1.20.0070.05313.71
5.1.10.0070.05313.71
5.1.00.0070.03713.71
5.0.50.0000.03013.71
5.0.40.0030.02313.71
5.0.30.0030.06313.71
5.0.20.0000.04713.71
5.0.10.0030.02013.71
5.0.00.0000.03313.71
4.4.90.0000.04013.71
4.4.80.0030.03713.71
4.4.70.0000.03713.71
4.4.60.0030.03313.71
4.4.50.0030.02713.71
4.4.40.0000.03713.71
4.4.30.0030.03013.71
4.4.20.0030.03013.71
4.4.10.0030.03713.71
4.4.00.0030.04713.71
4.3.110.0030.03713.71
4.3.100.0030.02713.71
4.3.90.0070.01713.71
4.3.80.0000.02313.71
4.3.70.0030.01313.71
4.3.60.0000.03013.71
4.3.50.0000.02013.71
4.3.40.0030.02313.71
4.3.30.0030.02313.71
4.3.20.0030.01313.71
4.3.10.0030.01313.71
4.3.00.0030.02313.71

preferences:
69.12 ms | 401 KiB | 5 Q