3v4l.org

run code in 300+ PHP versions simultaneously
<?php mb_internal_encoding('ascii'); echo 'Subject: ', mb_encode_mimeheader('❤', 'ascii', 'D');

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)
8.3.70.0110.00416.58
8.3.60.0040.01118.55
8.3.50.0110.00821.92
8.3.40.0110.00418.54
8.3.30.0070.00718.59
8.3.20.0090.00018.48
8.3.10.0000.00821.02
8.3.00.0070.00023.47
8.2.180.0140.00716.38
8.2.170.0100.01022.96
8.2.160.0070.00720.47
8.2.150.0060.00324.18
8.2.140.0080.00024.66
8.2.130.0000.00826.16
8.2.120.0040.00419.77
8.2.110.0050.00520.35
8.2.100.0030.00917.69
8.2.90.0030.00519.20
8.2.80.0070.00018.04
8.2.70.0050.00317.50
8.2.60.0000.00818.04
8.2.50.0030.00618.07
8.2.40.0000.00718.09
8.2.30.0040.00419.48
8.2.20.0040.00417.82
8.2.10.0040.00417.60
8.2.00.0030.00617.65
8.1.280.0110.00325.92
8.1.270.0100.00023.99
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0030.00622.47
8.1.230.0070.00420.91
8.1.220.0000.00918.77
8.1.210.0040.00419.03
8.1.200.0060.00317.35
8.1.190.0040.00419.32
8.1.180.0000.00818.10
8.1.170.0050.00318.51
8.1.160.0000.00718.82
8.1.150.0040.00418.57
8.1.140.0000.00817.39
8.1.130.0030.00317.77
8.1.120.0000.00717.29
8.1.110.0040.00417.30
8.1.100.0070.00017.30
8.1.90.0020.00517.42
8.1.80.0050.00217.40
8.1.70.0000.00717.41
8.1.60.0060.00317.51
8.1.50.0040.00417.38
8.1.40.0040.00417.45
8.1.30.0040.00417.63
8.1.20.0050.00317.51
8.1.10.0030.00517.44
8.1.00.0040.00417.33
8.0.300.0060.00319.73
8.0.290.0000.00917.05
8.0.280.0000.00718.36
8.0.270.0070.00017.23
8.0.260.0030.00316.77
8.0.250.0000.00716.87
8.0.240.0040.00417.02
8.0.230.0000.00716.85
8.0.220.0030.00316.81
8.0.210.0070.00016.79
8.0.200.0040.00416.95
8.0.190.0030.00316.90
8.0.180.0030.00316.82
8.0.170.0040.00416.74
8.0.160.0040.00416.88
8.0.150.0000.00816.77
8.0.140.0070.00016.77
8.0.130.0030.00313.28
8.0.120.0000.00716.70
8.0.110.0080.00016.77
8.0.100.0040.00416.83
8.0.90.0000.00716.69
8.0.80.0090.00616.83
8.0.70.0070.00016.63
8.0.60.0040.00416.81
8.0.50.0030.00516.71
8.0.30.0140.00617.22
8.0.20.0090.00917.40
8.0.10.0000.00716.71
8.0.00.0110.00816.65
7.4.330.0000.00514.53
7.4.320.0030.00316.33
7.4.300.0000.00716.26
7.4.290.0000.00616.45
7.4.280.0030.00316.34
7.4.270.0000.00716.39
7.4.260.0000.00513.25
7.4.250.0000.00816.25
7.4.240.0000.00816.44
7.4.230.0000.00716.35
7.4.220.0090.01516.33
7.4.210.0060.00816.45
7.4.200.0040.00416.26
7.4.190.0040.00416.50
7.4.160.0100.01316.43
7.4.150.0120.00417.40
7.4.140.0110.00517.86
7.4.130.0090.01116.36
7.4.120.0090.01016.26
7.4.110.0120.00816.33
7.4.100.0070.01116.38
7.4.90.0080.00816.38
7.4.80.0040.01319.39
7.4.70.0130.00316.25
7.4.60.0120.00616.43
7.4.50.0030.00616.27
7.4.40.0100.00722.52
7.4.30.0060.01016.38
7.4.00.0060.01214.91
7.3.330.0050.00013.00
7.3.320.0000.00513.04
7.3.310.0080.00016.21
7.3.300.0000.00716.09
7.3.290.0040.01116.11
7.3.280.0100.00516.12
7.3.270.0130.00317.40
7.3.260.0110.01018.24
7.3.250.0120.00916.33
7.3.240.0130.00316.45
7.3.230.0110.00716.48
7.3.210.0140.00316.42
7.3.200.0110.01119.39
7.3.190.0100.00716.47
7.3.180.0060.00916.20
7.3.170.0040.01516.27
7.3.160.0110.00516.35
7.3.120.0030.01014.85
7.2.330.0150.00316.53
7.2.320.0110.00616.24
7.2.310.0090.00916.55
7.2.300.0100.00716.57
7.2.290.0180.00316.62
7.2.00.0040.00819.04
7.1.100.0080.00418.11
7.1.70.0030.00517.00
7.1.60.0100.01019.40
7.1.50.0120.00916.90
7.1.00.0030.07722.41
7.0.200.0000.01016.55
7.0.140.0030.07322.00
7.0.60.0170.07720.00
7.0.50.0030.05317.93
7.0.40.0030.08719.90
7.0.30.0270.04020.25
7.0.20.0200.05720.01
7.0.10.0030.07320.30
7.0.00.0100.06020.30
5.6.280.0030.07321.03
5.6.210.0030.08320.74
5.6.200.0130.07318.17
5.6.190.0000.06020.57
5.6.180.0270.04720.63
5.6.170.0270.07320.52
5.6.160.0000.09020.54
5.6.150.0070.08718.11
5.6.140.0070.08318.16
5.6.130.0070.05318.20
5.6.120.0070.05320.89
5.6.110.0170.07320.98
5.6.100.0130.07021.00
5.6.90.0100.08020.94
5.6.80.0100.07720.53
5.5.350.0300.07320.48
5.5.340.0030.03717.94
5.5.330.0100.04020.53
5.5.320.0130.06020.18
5.5.310.0330.06320.23
5.5.300.0070.04717.95
5.5.290.0100.07317.91
5.5.280.0030.05320.64
5.5.270.0130.08320.84
5.5.260.0230.06020.73
5.5.250.0000.08720.57
5.5.240.0130.06720.18
5.4.450.0070.06319.41
5.4.440.0100.07019.39
5.4.430.0000.06019.56
5.4.420.0030.04719.48
5.4.410.0030.04319.33
5.4.400.0100.06719.09
5.4.390.0000.04019.08
5.4.380.0030.07319.06
5.4.370.0030.04319.24
5.4.360.0000.05318.79
5.4.350.0030.03719.06
5.4.340.0070.03319.25
5.4.320.0030.07719.05
5.4.310.0000.06719.25
5.4.300.0100.03018.80
5.4.290.0000.04019.03
5.4.280.0100.03019.10
5.4.270.0030.03718.79
5.4.260.0030.04319.13
5.4.250.0070.07319.12
5.4.240.0030.06018.91
5.4.230.0000.07019.08
5.4.220.0070.05719.23
5.4.210.0100.04318.78
5.4.200.0170.03719.05
5.4.190.0030.07719.24
5.4.180.0000.04719.07
5.4.170.0030.03718.90
5.4.160.0070.07719.14
5.4.150.0030.07319.06
5.4.140.0000.05016.31
5.4.130.0100.06316.28
5.4.120.0070.05316.18
5.4.110.0030.06716.39
5.4.100.0100.04016.41
5.4.90.0070.06716.34
5.4.80.0000.04716.37
5.4.70.0030.04016.18
5.4.60.0000.06016.39
5.4.50.0070.06016.38
5.4.40.0070.06716.47
5.4.30.0070.04016.35
5.4.20.0100.07016.40
5.4.10.0030.06716.45
5.4.00.0030.05315.78
5.3.290.0000.05014.62
5.3.280.0030.06714.49
5.3.270.0100.03014.71
5.3.260.0030.07714.44
5.3.250.0070.07314.44
5.3.240.0000.07714.62
5.3.230.0000.08014.47
5.3.220.0100.04014.40
5.3.210.0030.04714.59
5.3.200.0030.07314.39
5.3.190.0000.07714.61
5.3.180.0100.07314.46
5.3.170.0070.04314.39
5.3.160.0000.04014.55
5.3.150.0000.04014.46
5.3.140.0030.04314.50
5.3.130.0000.07714.40
5.3.120.0030.07314.59
5.3.110.0070.07714.57
5.3.100.0000.04013.98
5.3.90.0070.07313.86
5.3.80.0100.06714.06
5.3.70.0100.06713.85
5.3.60.0030.07313.83
5.3.50.0030.06714.04
5.3.40.0030.07313.78
5.3.30.0100.05713.76
5.3.20.0070.06013.62
5.3.10.0130.05313.74
5.3.00.0000.07313.48
5.2.170.0030.03712.04
5.2.160.0030.06012.04
5.2.150.0030.06312.04
5.2.140.0100.05712.04
5.2.130.0000.04312.04
5.2.120.0030.05012.04
5.2.110.0030.06012.04
5.2.100.0030.05712.04
5.2.90.0070.05312.04
5.2.80.0030.04312.04
5.2.70.0100.03712.04
5.2.60.0070.06012.04
5.2.50.0100.04712.04
5.2.40.0030.04712.04
5.2.30.0000.05712.04
5.2.20.0070.04712.04
5.2.10.0070.05012.04
5.2.00.0030.06012.04
5.1.60.0030.05012.04
5.1.50.0030.04312.04
5.1.40.0000.03312.04
5.1.30.0030.05712.04
5.1.20.0000.05712.04
5.1.10.0000.05712.04
5.1.00.0030.03712.04
5.0.50.0030.02012.04
5.0.40.0000.02012.04
5.0.30.0030.04012.04
5.0.20.0000.02312.04
5.0.10.0030.03312.04
5.0.00.0000.06312.04
4.4.90.0030.01712.04
4.4.80.0000.02012.04
4.4.70.0000.03012.04
4.4.60.0030.03012.04
4.4.50.0030.03712.04
4.4.40.0030.03712.04
4.4.30.0000.02012.04
4.4.20.0000.02012.04
4.4.10.0070.01712.04
4.4.00.0000.02712.04
4.3.110.0070.02312.04
4.3.100.0000.02012.04
4.3.90.0070.02012.04
4.3.80.0030.04312.04
4.3.70.0000.02012.04
4.3.60.0000.03712.04
4.3.50.0070.03312.04
4.3.40.0030.05312.04
4.3.30.0030.02712.04
4.3.20.0000.02712.04
4.3.10.0000.02012.04
4.3.00.0030.02712.04

preferences:
51.2 ms | 401 KiB | 5 Q