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)
8.3.70.0180.00318.31
8.3.60.0110.00416.74
8.3.50.0080.01121.93
8.3.40.0120.00918.66
8.3.30.0090.00518.68
8.3.20.0040.00420.16
8.3.10.0000.00823.51
8.3.00.0090.00019.16
8.2.180.0090.00618.17
8.2.170.0110.00422.96
8.2.160.0130.00320.52
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0030.00620.88
8.2.110.0060.00322.29
8.2.100.0040.00717.78
8.2.90.0040.00419.09
8.2.80.0080.00017.97
8.2.70.0080.00517.13
8.2.60.0060.00317.91
8.2.50.0000.00818.07
8.2.40.0040.00419.94
8.2.30.0070.00018.08
8.2.20.0030.00617.50
8.2.10.0040.00417.96
8.2.00.0070.00017.55
8.1.280.0100.00325.92
8.1.270.0040.00422.24
8.1.260.0040.00426.35
8.1.250.0060.00328.09
8.1.240.0090.00023.96
8.1.230.0120.00019.18
8.1.220.0080.00017.74
8.1.210.0080.00018.77
8.1.200.0040.00717.22
8.1.190.0030.00617.00
8.1.180.0030.00518.88
8.1.170.0000.00818.38
8.1.160.0070.00021.93
8.1.150.0000.00718.60
8.1.140.0040.00417.39
8.1.130.0040.00417.80
8.1.120.0070.00017.41
8.1.110.0000.00817.27
8.1.100.0040.00417.40
8.1.90.0000.00717.30
8.1.80.0040.00417.33
8.1.70.0000.00717.27
8.1.60.0060.00317.39
8.1.50.0050.00317.44
8.1.40.0000.00717.40
8.1.30.0050.00617.58
8.1.20.0040.00417.51
8.1.10.0040.00417.48
8.1.00.0070.00017.33
8.0.300.0070.00018.77
8.0.290.0000.00717.04
8.0.280.0040.00418.48
8.0.270.0000.00617.16
8.0.260.0060.00017.17
8.0.250.0060.00016.97
8.0.240.0060.00316.93
8.0.230.0030.00716.95
8.0.220.0030.00316.75
8.0.210.0000.00716.74
8.0.200.0040.00416.77
8.0.190.0000.00716.89
8.0.180.0030.00316.83
8.0.170.0000.00716.80
8.0.160.0000.00716.87
8.0.150.0070.00016.73
8.0.140.0000.00716.81
8.0.130.0050.00013.28
8.0.120.0050.00316.88
8.0.110.0030.00316.71
8.0.100.0050.00316.66
8.0.90.0000.00716.69
8.0.80.0170.00316.86
8.0.70.0000.00716.69
8.0.60.0000.00716.70
8.0.50.0040.00416.85
8.0.30.0060.01117.12
8.0.20.0060.01217.40
8.0.10.0040.00416.87
8.0.00.0090.00916.67
7.4.330.0030.00315.00
7.4.320.0030.00316.42
7.4.300.0030.00316.57
7.4.290.0000.00716.41
7.4.280.0070.00016.41
7.4.270.0000.00716.55
7.4.260.0030.00316.52
7.4.250.0040.00416.37
7.4.240.0030.00316.44
7.4.230.0000.00716.53
7.4.220.0060.01216.53
7.4.210.0090.00616.47
7.4.200.0030.00316.50
7.4.190.0030.00316.70
7.4.160.0150.00616.40
7.4.150.0140.00317.40
7.4.140.0110.00617.86
7.4.130.0090.01016.38
7.4.120.0090.01216.42
7.4.110.0120.00916.46
7.4.100.0030.01416.42
7.4.90.0070.01116.58
7.4.80.0100.01019.39
7.4.70.0100.00716.48
7.4.60.0030.01316.43
7.4.50.0080.00016.33
7.4.40.0080.00816.54
7.4.30.0030.01316.39
7.4.00.0060.01014.79
7.3.330.0000.00512.99
7.3.320.0030.00312.93
7.3.310.0000.00716.06
7.3.300.0060.00016.23
7.3.290.0120.00316.23
7.3.280.0080.01016.19
7.3.270.0100.00717.40
7.3.260.0120.00416.44
7.3.250.0090.00916.20
7.3.240.0140.00916.20
7.3.230.0090.00616.41
7.3.210.0170.00616.54
7.3.200.0070.01119.39
7.3.190.0030.01416.33
7.3.180.0030.01316.45
7.3.170.0080.00816.31
7.3.160.0060.01016.38
7.3.120.0080.00814.51
7.3.110.0070.00314.96
7.3.100.0060.01014.72
7.3.90.0030.01014.94
7.3.80.0090.00614.62
7.3.70.0040.00814.66
7.3.60.0030.01214.53
7.3.50.0070.00714.39
7.3.40.0060.00314.65
7.3.30.0070.00714.56
7.3.20.0070.00716.43
7.3.10.0090.01016.48
7.3.00.0090.00616.37
7.2.330.0170.00016.45
7.2.320.0150.00916.48
7.2.310.0030.01316.39
7.2.300.0070.01116.55
7.2.290.0030.01316.29
7.2.250.0070.01115.11
7.2.240.0090.00915.02
7.2.230.0130.00314.72
7.2.220.0030.00714.91
7.2.210.0070.00715.14
7.2.200.0040.00714.57
7.2.190.0170.00014.68
7.2.180.0040.01214.84
7.2.170.0050.00514.87
7.2.130.0170.00616.58
7.2.120.0120.00916.49
7.2.110.0250.00316.55
7.2.100.0160.00816.70
7.2.90.0140.01416.64
7.2.80.0240.00316.49
7.2.70.0150.01516.34
7.2.60.0080.01416.30
7.2.50.0090.00616.63
7.2.40.0130.00916.92
7.2.30.0110.01116.58
7.2.20.0150.00716.24
7.2.10.0170.00716.38
7.2.00.0080.00817.82
7.1.330.0070.00715.51
7.1.320.0000.00915.88
7.1.310.0000.01615.77
7.1.300.0030.00615.58
7.1.290.0090.00615.72
7.1.280.0040.00815.73
7.1.270.0070.00715.43
7.1.260.0040.00715.79
7.1.250.0130.00515.30
7.1.100.0000.01117.77
7.1.70.0080.00016.53
7.1.60.0070.01719.46
7.1.50.0090.01216.79
7.1.00.0100.07022.35
7.0.200.0030.00516.33
7.0.140.0030.07022.05
7.0.60.0030.04021.76
7.0.50.0130.07717.86
7.0.40.0070.08719.96
7.0.30.0200.08320.10
7.0.20.0330.07320.00
7.0.10.0070.06020.18
7.0.00.0000.09020.20
5.6.280.0000.07721.12
5.6.210.0070.07320.50
5.6.200.0070.05718.12
5.6.190.0100.04720.32
5.6.180.0230.08720.45
5.6.170.0500.06020.39
5.6.160.0170.07320.50
5.6.150.0030.03718.21
5.6.140.0230.06718.16
5.6.130.0230.06018.18
5.6.120.0000.04720.97
5.6.110.0100.08720.88
5.6.100.0100.08720.98
5.6.90.0030.09021.02
5.6.80.0070.04020.35
5.5.350.0230.07320.42
5.5.340.0170.07017.93
5.5.330.0070.07720.25
5.5.320.0230.03720.20
5.5.310.0300.07720.13
5.5.300.0130.06718.00
5.5.290.0130.03718.02
5.5.280.0130.08020.89
5.5.270.0130.07720.76
5.5.260.0070.09020.85
5.5.250.0230.07020.61
5.5.240.0200.05020.27
5.4.450.0170.03319.14
5.4.440.0100.04319.44
5.4.430.0130.05019.50
5.4.420.0100.08019.50
5.4.410.0030.04319.36
5.4.400.0070.03718.81
5.4.390.0100.07018.92
5.4.380.0070.04719.18
5.4.370.0030.06719.16
5.4.360.0100.07318.80
5.4.350.0100.06719.08
5.4.340.0030.07019.14
5.4.320.0100.04319.15
5.4.310.0130.06719.08
5.4.300.0070.06319.17
5.4.290.0130.04019.00
5.4.280.0030.06719.13
5.4.270.0070.08019.00
5.4.260.0130.07019.16
5.4.250.0030.05719.07
5.4.240.0170.06719.14
5.4.230.0070.07319.13
5.4.220.0000.06019.12
5.4.210.0030.06018.78
5.4.200.0100.07719.14
5.4.190.0070.04718.99
5.4.180.0070.06319.07
5.4.170.0130.05719.12
5.4.160.0100.04019.11
5.4.150.0070.07019.15
5.4.140.0000.07716.25
5.4.130.0030.07016.33
5.4.120.0100.05716.26
5.4.110.0000.06016.23
5.4.100.0100.06316.27
5.4.90.0130.06316.16
5.4.80.0070.04016.27
5.4.70.0030.05316.38
5.4.60.0030.08316.39
5.4.50.0100.04016.12
5.4.40.0100.06716.38
5.4.30.0070.07016.27
5.4.20.0000.07016.24
5.4.10.0000.04016.58
5.4.00.0030.03715.81
5.3.290.0100.04314.59
5.3.280.0030.05014.53
5.3.270.0030.05314.52
5.3.260.0100.03314.55
5.3.250.0070.07314.52
5.3.240.0000.06014.54
5.3.230.0030.07314.52
5.3.220.0070.04014.38
5.3.210.0030.07014.49
5.3.200.0070.07314.49
5.3.190.0100.07314.46
5.3.180.0000.07314.50
5.3.170.0070.08014.50
5.3.160.0100.06014.64
5.3.150.0030.04714.50
5.3.140.0100.06314.48
5.3.130.0070.05314.63
5.3.120.0130.07314.46
5.3.110.0070.04014.46
5.3.100.0030.03713.97
5.3.90.0130.07013.83
5.3.80.0100.03713.94
5.3.70.0030.05713.95
5.3.60.0170.06313.83
5.3.50.0100.03313.87
5.3.40.0000.05013.88
5.3.30.0030.07013.72
5.3.20.0070.06713.62
5.3.10.0000.04013.57
5.3.00.0030.04013.57
5.2.170.0070.06311.08
5.2.160.0100.03011.14
5.2.150.0070.05711.13
5.2.140.0000.04311.29
5.2.130.0030.04311.09
5.2.120.0070.03011.25
5.2.110.0030.04011.00
5.2.100.0000.03011.00
5.2.90.0030.03311.08
5.2.80.0000.04311.04
5.2.70.0030.03711.04
5.2.60.0030.05011.12
5.2.50.0100.06010.96
5.2.40.0100.05710.84
5.2.30.0070.05710.84
5.2.20.0070.03710.93
5.2.10.0070.05710.85
5.2.00.0000.04710.70
5.1.60.0030.0379.89
5.1.50.0000.0339.83
5.1.40.0070.02310.03
5.1.30.0030.03010.18
5.1.20.0000.03310.39
5.1.10.0100.03010.05
5.1.00.0130.0239.91
5.0.50.0070.0438.55
5.0.40.0030.0438.41
5.0.30.0000.0678.26
5.0.20.0000.0278.26
5.0.10.0030.0278.07
5.0.00.0030.0638.10
4.4.90.0000.0407.80
4.4.80.0000.0237.80
4.4.70.0030.0277.80
4.4.60.0000.0207.80
4.4.50.0000.0377.80
4.4.40.0000.0507.80
4.4.30.0030.0137.80
4.4.20.0030.0237.80
4.4.10.0070.0237.80
4.4.00.0000.0307.80
4.3.110.0000.0407.80
4.3.100.0030.0177.80
4.3.90.0030.0337.80
4.3.80.0030.0307.80
4.3.70.0070.0277.80
4.3.60.0000.0337.80
4.3.50.0030.0177.80
4.3.40.0000.0477.80
4.3.30.0000.0207.80
4.3.20.0000.0237.80
4.3.10.0000.0377.80
4.3.00.0000.0207.80

preferences:
37.56 ms | 401 KiB | 5 Q