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)
8.3.60.0120.00616.50
8.3.50.0130.00817.45
8.3.40.0150.00318.70
8.3.30.0090.00618.64
8.3.20.0000.00818.48
8.3.10.0040.00420.43
8.3.00.0050.00319.26
8.2.180.0040.01116.63
8.2.170.0100.01022.96
8.2.160.0030.01020.96
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0000.00726.16
8.2.120.0080.00020.39
8.2.110.0030.00721.12
8.2.100.0110.00017.78
8.2.90.0030.00519.28
8.2.80.0040.00419.28
8.2.70.0090.00017.50
8.2.60.0040.00417.93
8.2.50.0030.00718.07
8.2.40.0000.00718.09
8.2.30.0000.00718.03
8.2.20.0040.00417.59
8.2.10.0080.00017.46
8.2.00.0040.00417.60
8.1.280.0070.01425.92
8.1.270.0000.00724.66
8.1.260.0090.00026.35
8.1.250.0100.00328.09
8.1.240.0030.00722.44
8.1.230.0080.00320.84
8.1.220.0030.00617.74
8.1.210.0060.00318.77
8.1.200.0000.00817.10
8.1.190.0070.00017.18
8.1.180.0040.00418.10
8.1.170.0040.00418.82
8.1.160.0000.00718.72
8.1.150.0040.00418.57
8.1.140.0030.00617.36
8.1.130.0000.00717.70
8.1.120.0070.00017.37
8.1.110.0000.00717.27
8.1.100.0030.00317.27
8.1.90.0020.00517.24
8.1.80.0020.00517.36
8.1.70.0040.00417.25
8.1.60.0080.00017.46
8.1.50.0050.00517.29
8.1.40.0000.00717.47
8.1.30.0040.00417.52
8.1.20.0060.00317.64
8.1.10.0040.00417.48
8.1.00.0040.00417.43
8.0.300.0000.00820.04
8.0.290.0000.00716.75
8.0.280.0000.00718.44
8.0.270.0070.00017.23
8.0.260.0030.00518.43
8.0.250.0040.00416.96
8.0.240.0020.00516.96
8.0.230.0030.00316.91
8.0.220.0000.00616.78
8.0.210.0030.00516.88
8.0.200.0030.00316.77
8.0.190.0030.00616.92
8.0.180.0000.00716.87
8.0.170.0000.00916.82
8.0.160.0050.00216.71
8.0.150.0030.00716.71
8.0.140.0080.00516.68
8.0.130.0000.00513.23
8.0.120.0040.00416.79
8.0.110.0040.00416.71
8.0.100.0040.00416.76
8.0.90.0000.00816.62
8.0.80.0090.01316.85
8.0.70.0070.00016.68
8.0.60.0040.00416.70
8.0.50.0070.00016.60
8.0.30.0060.01216.78
8.0.20.0180.00817.12
8.0.10.0050.00216.89
8.0.00.0060.01416.63
7.4.330.0050.00012.91
7.4.320.0070.00016.45
7.4.300.0030.00316.41
7.4.290.0090.00016.42
7.4.280.0030.00516.52
7.4.270.0080.00016.58
7.4.260.0050.00013.20
7.4.250.0080.00016.41
7.4.240.0030.00316.41
7.4.230.0030.00316.53
7.4.220.0150.00416.46
7.4.210.0070.00916.42
7.4.200.0080.00016.50
7.4.190.0000.00716.38
7.4.160.0040.01116.29
7.4.150.0070.01116.43
7.4.140.0090.00916.46
7.4.130.0090.00716.36
7.4.120.0100.00716.42
7.4.110.0100.00916.55
7.4.100.0070.01116.30
7.4.90.0030.01316.49
7.4.80.0090.00919.39
7.4.70.0160.00016.50
7.4.60.0120.00416.43
7.4.50.0040.00916.55
7.4.40.0110.00716.13
7.4.30.0070.01016.55
7.4.00.0030.01415.08
7.3.330.0030.00313.18
7.3.320.0020.00212.89
7.3.310.0030.00316.20
7.3.300.0070.00016.20
7.3.290.0080.00816.18
7.3.280.0060.01016.16
7.3.270.0180.00016.16
7.3.260.0120.01216.52
7.3.250.0090.00816.29
7.3.240.0100.00716.51
7.3.230.0090.00616.15
7.3.210.0120.00316.29
7.3.200.0110.00616.20
7.3.190.0120.01216.36
7.3.180.0190.00616.38
7.3.170.0070.01016.24
7.3.160.0120.00316.50
7.3.120.0100.00714.68
7.2.330.0140.00316.38
7.2.320.0160.00316.56
7.2.310.0100.01016.34
7.2.300.0100.00616.41
7.2.290.0070.01016.55
7.1.70.0000.00716.99
7.1.60.0030.02119.40
7.1.50.0100.01016.89
7.1.00.0030.03322.27
7.0.200.0550.00614.60
7.0.140.0030.07322.04
7.0.120.0030.07322.15
7.0.60.0100.07719.92
7.0.50.0070.03717.74
7.0.40.0030.04320.21
7.0.30.0270.04720.01
7.0.20.0300.07320.00
7.0.10.0230.05320.16
7.0.00.0130.08020.08
5.6.210.0070.08020.52
5.6.200.0130.07018.09
5.6.190.0070.08720.31
5.6.180.0200.05020.46
5.6.170.0200.05020.48
5.6.160.0070.08720.44
5.6.150.0100.08018.11
5.6.140.0170.03018.17
5.6.130.0100.08318.17
5.6.120.0030.08721.14
5.6.110.0100.04021.13
5.6.100.0030.05321.07
5.6.90.0170.06720.99
5.6.80.0230.07020.35
5.6.70.0170.04320.40
5.5.350.0270.08320.36
5.5.340.0100.08017.95
5.5.330.0130.08020.37
5.5.320.0000.04720.13
5.5.310.0300.08720.29
5.5.300.0100.04017.95
5.5.290.0070.08018.01
5.5.280.0170.07720.76
5.5.270.0100.08720.75
5.5.260.0030.04020.66
5.5.250.0070.07720.69
5.5.240.0030.05020.18
5.4.450.0070.07719.13
5.4.440.0070.08019.50
5.4.430.0100.07319.50
5.4.420.0070.06319.11
5.4.410.0000.06719.12
5.4.400.0070.04019.19
5.4.390.0030.05018.81
5.4.380.0030.06719.14
5.4.370.0030.07719.14
5.4.360.0070.03719.11
5.4.350.0100.06719.08
5.4.340.0000.06718.79
5.4.320.0070.06718.81
5.4.310.0130.07018.92
5.4.300.0000.05718.79
5.4.290.0030.04019.00
5.4.280.0030.07718.91
5.4.270.0070.07319.07
5.4.260.0130.07318.91
5.4.250.0200.05718.78
5.4.240.0130.03018.80
5.4.230.0070.05318.95
5.4.220.0030.04318.90
5.4.210.0070.07319.13
5.4.200.0070.03718.82
5.4.190.0100.05019.13
5.4.180.0070.05319.13
5.4.170.0000.05719.17
5.4.160.0070.03718.77
5.4.150.0000.05718.78
5.4.140.0000.08016.29
5.4.130.0100.04316.27
5.4.120.0100.06316.42
5.4.110.0130.05316.37
5.4.100.0000.04716.36
5.4.90.0100.07316.24
5.4.80.0070.07016.59
5.4.70.0030.06316.22
5.4.60.0070.06016.38
5.4.50.0070.04316.26
5.4.40.0000.06316.34
5.4.30.0130.06716.20
5.4.20.0070.07016.21
5.4.10.0100.07716.25
5.4.00.0070.05715.61
5.3.290.0030.08014.75
5.3.280.0030.04014.46
5.3.270.0070.08314.52
5.3.260.0130.06014.52
5.3.250.0100.06714.55
5.3.240.0130.06714.55
5.3.230.0030.06714.52
5.3.220.0070.06714.46
5.3.210.0070.07714.38
5.3.200.0030.04714.50
5.3.190.0100.06014.50
5.3.180.0270.05314.50
5.3.170.0100.03714.47
5.3.160.0100.06714.50
5.3.150.0100.06314.54
5.3.140.0100.05714.52
5.3.130.0030.08714.52
5.3.120.0030.08014.48
5.3.110.0030.07714.42
5.3.100.0070.05313.93
5.3.90.0000.04313.95
5.3.80.0070.05714.04
5.3.70.0070.07313.99
5.3.60.0030.06313.79
5.3.50.0130.06713.88
5.3.40.0030.08013.91
5.3.30.0000.05013.83
5.3.20.0070.05313.71
5.3.10.0030.05313.60
5.3.00.0070.07013.47
5.2.170.0030.05711.13
5.2.160.0000.06710.96
5.2.150.0070.05711.04
5.2.140.0070.06011.04
5.2.130.0070.06311.18
5.2.120.0100.05311.09
5.2.110.0030.06311.04
5.2.100.0100.05010.96
5.2.90.0000.06311.03
5.2.80.0100.04711.25
5.2.70.0030.03011.02
5.2.60.0000.05711.05
5.2.50.0000.04710.99
5.2.40.0070.02711.00
5.2.30.0030.03011.12
5.2.20.0000.03010.90
5.2.10.0070.04310.86
5.2.00.0030.04710.86
5.1.60.0100.0479.98
5.1.50.0000.03310.05
5.1.40.0130.0439.98
5.1.30.0000.05010.29
5.1.20.0030.03310.38
5.1.10.0030.05010.14
5.1.00.0100.02310.06
5.0.50.0000.0238.69
5.0.40.0000.0238.43
5.0.30.0030.0538.43
5.0.20.0030.0238.43
5.0.10.0030.0478.43
5.0.00.0070.0538.43
4.4.90.0070.0108.43
4.4.80.0070.0278.43
4.4.70.0030.0208.43
4.4.60.0070.0178.43
4.4.50.0030.0208.43
4.4.40.0030.0508.43
4.4.30.0030.0138.43
4.4.20.0000.0238.43
4.4.10.0000.0208.43
4.4.00.0000.0278.43
4.3.110.0030.0138.43
4.3.100.0070.0308.43
4.3.90.0070.0308.43
4.3.80.0000.0538.43
4.3.70.0000.0378.43
4.3.60.0030.0338.43
4.3.50.0030.0208.43
4.3.40.0030.0378.43
4.3.30.0000.0378.43
4.3.20.0030.0308.43
4.3.10.0030.0278.43
4.3.00.0000.0238.43

preferences:
52.95 ms | 401 KiB | 5 Q