3v4l.org

run code in 300+ PHP versions simultaneously
<?php mb_internal_encoding('UTF-8'); echo 'Subject: ', mb_encode_mimeheader('❤', 'UTF-8', '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)
8.3.60.0110.01116.63
8.3.50.0110.00817.15
8.3.40.0090.00618.75
8.3.30.0120.00318.32
8.3.20.0050.00318.52
8.3.10.0000.00820.42
8.3.00.0100.00017.25
8.2.180.0140.00016.63
8.2.170.0120.00622.96
8.2.160.0030.01020.89
8.2.150.0030.00624.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0000.00719.72
8.2.110.0040.00420.96
8.2.100.0000.01217.53
8.2.90.0030.00719.13
8.2.80.0000.00717.93
8.2.70.0040.00417.38
8.2.60.0000.00717.68
8.2.50.0000.01018.07
8.2.40.0040.00418.03
8.2.30.0040.00417.94
8.2.20.0040.00417.49
8.2.10.0040.00417.64
8.2.00.0000.00717.61
8.1.280.0100.01025.92
8.1.270.0040.00424.66
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0000.00922.47
8.1.230.0070.00320.79
8.1.220.0090.00017.74
8.1.210.0000.00818.77
8.1.200.0060.00317.10
8.1.190.0080.00017.28
8.1.180.0040.00418.10
8.1.170.0050.00318.71
8.1.160.0000.00718.85
8.1.150.0000.00718.43
8.1.140.0000.00917.43
8.1.130.0000.00717.75
8.1.120.0000.00717.41
8.1.110.0040.00417.34
8.1.100.0050.00217.38
8.1.90.0000.00717.32
8.1.80.0000.00717.35
8.1.70.0030.00317.36
8.1.60.0000.00717.49
8.1.50.0040.00417.34
8.1.40.0080.00017.32
8.1.30.0000.00717.61
8.1.20.0040.00417.50
8.1.10.0040.00417.48
8.1.00.0040.00417.48
8.0.300.0070.00019.80
8.0.290.0040.00416.75
8.0.280.0030.00318.36
8.0.270.0070.00017.26
8.0.260.0060.00016.81
8.0.250.0080.00017.02
8.0.240.0000.00716.98
8.0.230.0000.00716.76
8.0.220.0040.00416.80
8.0.210.0030.00316.81
8.0.200.0000.00616.90
8.0.190.0070.00016.86
8.0.180.0000.00816.72
8.0.170.0050.00316.89
8.0.160.0040.00416.65
8.0.150.0040.00416.64
8.0.140.0110.00016.73
8.0.130.0050.00013.29
8.0.120.0040.00416.81
8.0.110.0070.00016.67
8.0.100.0000.00816.82
8.0.90.0000.00716.65
8.0.80.0070.01316.79
8.0.70.0040.00416.73
8.0.60.0070.00016.69
8.0.50.0000.00716.81
8.0.30.0120.01216.99
8.0.20.0090.00917.13
8.0.10.0080.00016.88
8.0.00.0110.00716.64
7.4.330.0050.00012.97
7.4.320.0000.00616.54
7.4.300.0030.00316.31
7.4.290.0030.00316.41
7.4.280.0000.00916.47
7.4.270.0000.00616.46
7.4.260.0050.00013.23
7.4.250.0000.00816.53
7.4.240.0070.00016.44
7.4.230.0000.00716.31
7.4.220.0090.00916.38
7.4.210.0070.01116.47
7.4.200.0030.00516.61
7.4.190.0040.00416.66
7.4.160.0160.00016.45
7.4.150.0070.01316.36
7.4.140.0110.01116.33
7.4.130.0160.00316.38
7.4.120.0090.00716.43
7.4.110.0120.00616.34
7.4.100.0130.00316.35
7.4.90.0090.00916.24
7.4.80.0060.01016.39
7.4.70.0120.00616.18
7.4.60.0070.01116.35
7.4.50.0000.00916.35
7.4.40.0030.01416.39
7.4.30.0070.01016.33
7.4.00.0090.00915.06
7.3.330.0000.00612.96
7.3.320.0030.00313.07
7.3.310.0050.00216.13
7.3.300.0000.00716.09
7.3.290.0100.00516.15
7.3.280.0070.00816.21
7.3.270.0040.01516.27
7.3.260.0100.00716.19
7.3.250.0130.00816.31
7.3.240.0090.01216.34
7.3.230.0150.00616.35
7.3.210.0080.00816.43
7.3.200.0120.00919.39
7.3.190.0060.01016.04
7.3.180.0140.00316.27
7.3.170.0120.00916.45
7.3.160.0030.01216.33
7.3.120.0070.00714.99
7.3.10.0140.00316.61
7.3.00.0060.00615.79
7.2.330.0140.00416.33
7.2.320.0160.00616.60
7.2.310.0040.01716.30
7.2.300.0190.00316.64
7.2.290.0150.00316.50
7.2.130.0100.01016.69
7.2.120.0100.00716.57
7.2.110.0060.01016.51
7.2.100.0150.00316.88
7.2.90.0100.01016.77
7.2.80.0070.01016.53
7.2.70.0160.00016.90
7.2.60.0090.01116.59
7.2.50.0140.00616.66
7.2.40.0150.00616.50
7.2.30.0120.00816.79
7.2.20.0160.00616.77
7.2.10.0210.00416.76
7.2.00.0130.00617.86
7.1.250.0100.01015.19
7.1.200.0060.00615.75
7.1.100.0040.00818.09
7.1.70.0040.00716.73
7.1.60.0030.00719.40
7.1.50.0070.01416.91
7.1.00.0070.06022.57
7.0.200.0080.00016.75
7.0.140.0070.07322.21
7.0.120.0000.05321.96
7.0.60.0230.08021.73
7.0.50.0070.04017.89
7.0.40.0100.08019.98
7.0.30.0270.04020.00
7.0.20.0430.06320.04
7.0.10.0100.08720.16
7.0.00.0030.04720.20
5.6.280.0070.07020.96
5.6.210.0000.04320.54
5.6.200.0030.04018.17
5.6.190.0070.07020.67
5.6.180.0270.08020.33
5.6.170.0300.08020.71
5.6.160.0100.08720.48
5.6.150.0070.03718.21
5.6.140.0070.08018.12
5.6.130.0070.05018.08
5.6.120.0100.08021.12
5.6.110.0130.08720.99
5.6.100.0170.06720.96
5.6.90.0000.08020.94
5.6.80.0100.06320.25
5.5.350.0270.04020.37
5.5.340.0130.07318.01
5.5.330.0000.05320.20
5.5.320.0300.07720.22
5.5.310.0230.05020.23
5.5.300.0100.07318.03
5.5.290.0130.08017.89
5.5.280.0070.08720.84
5.5.270.0030.08720.83
5.5.260.0170.06720.75
5.5.250.0030.08020.69
5.5.240.0330.07020.15
5.4.450.3900.04319.24
5.4.440.0030.06319.54
5.4.430.1630.06019.52
5.4.420.4130.03719.45
5.4.410.3970.03319.07
5.4.400.4200.04019.18
5.4.390.4100.04019.16
5.4.380.3100.03019.20
5.4.370.2700.04019.26
5.4.360.3230.04319.00
5.4.350.2670.03719.16
5.4.340.3270.03718.87
5.4.320.3300.03019.16
5.4.310.3900.04019.17
5.4.300.4270.04719.16
5.4.290.4230.04019.07
5.4.280.4200.03319.27
5.4.270.4070.03719.23
5.4.260.4470.03319.06
5.4.250.0100.06318.90
5.4.240.0070.05318.88
5.4.230.4430.04019.04
5.4.220.4330.04319.04
5.4.210.4100.03318.99
5.4.200.4070.03718.88
5.4.190.4370.03019.12
5.4.180.3900.03719.03
5.4.170.4570.03718.92
5.4.160.0100.03319.11
5.4.150.0100.05319.02
5.4.140.4170.03716.45
5.4.130.4570.03316.20
5.4.120.4030.03716.37
5.4.110.4370.03016.41
5.4.100.3930.04016.23
5.4.90.4730.03016.50
5.4.80.3870.03316.55
5.4.70.4170.04016.45
5.4.60.4630.04016.52
5.4.50.3900.04716.46
5.4.40.4330.04016.44
5.4.30.4330.03716.29
5.4.20.3830.03716.35
5.4.10.2870.03316.44
5.4.00.3700.03015.83
5.3.290.4130.04314.48
5.3.280.4200.03714.38
5.3.270.4100.04314.53
5.3.260.0000.04014.58
5.3.250.4430.05014.54
5.3.240.4830.04014.39
5.3.230.4670.03714.61
5.3.220.4530.03314.40
5.3.210.4630.03314.49
5.3.200.4400.03714.52
5.3.190.3700.04014.48
5.3.180.3770.03014.58
5.3.170.3970.03714.48
5.3.160.4630.03314.46
5.3.150.3530.04014.35
5.3.140.4670.04314.45
5.3.130.4730.03314.36
5.3.120.4630.03714.52
5.3.110.3970.03314.33
5.3.100.3830.03313.98
5.3.90.3630.04013.95
5.3.80.3170.04313.95
5.3.70.3770.04013.94
5.3.60.4000.03013.97
5.3.50.3300.03313.89
5.3.40.3770.02713.78
5.3.30.3430.03313.83
5.3.20.4000.03713.48
5.3.10.4030.03013.61
5.3.00.3970.03713.62
5.2.170.3130.03311.03
5.2.160.3070.03711.07
5.2.150.3370.02711.05
5.2.140.2770.03011.10
5.2.130.3800.04310.93
5.2.120.3570.03011.07
5.2.110.3230.03011.03
5.2.100.3300.02311.18
5.2.90.3070.02711.10
5.2.80.3370.02710.98
5.2.70.2830.02711.02
5.2.60.3600.02711.05
5.2.50.4100.03010.98
5.2.40.3000.02310.92
5.2.30.3230.03010.93
5.2.20.2470.02710.85
5.2.10.2770.03010.88
5.2.00.3030.02710.72
5.1.60.3100.02010.14
5.1.50.3000.0279.96
5.1.40.3070.0239.93
5.1.30.2970.03010.41
5.1.20.3030.03010.34
5.1.10.3300.03010.04
5.1.00.3400.0279.96
5.0.50.1730.0238.44
5.0.40.1530.0238.30
5.0.30.0600.0378.29
5.0.20.0800.0208.25
5.0.10.1230.0208.13
5.0.00.1300.0308.19
4.4.90.1430.0175.77
4.4.80.2070.0205.79
4.4.70.1570.0135.77
4.4.60.1700.0135.82
4.4.50.1470.0175.79
4.4.40.1870.0205.81
4.4.30.1200.0175.81
4.4.20.1470.0205.96
4.4.10.1700.0175.82
4.4.00.1900.0205.86
4.3.110.1300.0175.70
4.3.100.0270.0135.73
4.3.90.0770.0175.76
4.3.80.0970.0275.79
4.3.70.0970.0175.68
4.3.60.0970.0175.66
4.3.50.1300.0105.71
4.3.40.1270.0205.75
4.3.30.0430.0174.56
4.3.20.0230.0134.56
4.3.10.0370.0134.56
4.3.00.0600.0134.56

preferences:
38.9 ms | 401 KiB | 5 Q