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)
8.3.70.0110.00416.63
8.3.60.0100.00518.40
8.3.50.0130.00622.05
8.3.40.0030.01218.76
8.3.30.0100.00318.92
8.3.20.0000.00720.22
8.3.10.0080.00020.16
8.3.00.0000.00819.13
8.2.180.0070.00716.38
8.2.170.0110.00322.96
8.2.160.0070.00720.43
8.2.150.0050.00324.18
8.2.140.0080.00024.66
8.2.130.0080.00026.16
8.2.120.0070.00022.23
8.2.110.0030.00719.30
8.2.100.0060.00617.78
8.2.90.0030.00619.22
8.2.80.0040.00417.97
8.2.70.0000.01217.49
8.2.60.0000.00817.91
8.2.50.0030.00718.07
8.2.40.0090.00018.22
8.2.30.0020.00518.00
8.2.20.0000.00717.46
8.2.10.0050.00317.98
8.2.00.0000.00717.53
8.1.280.0070.01425.92
8.1.270.0040.00723.83
8.1.260.0050.00326.35
8.1.250.0040.00428.09
8.1.240.0060.00322.39
8.1.230.0060.00622.63
8.1.220.0000.00817.74
8.1.210.0060.00318.77
8.1.200.0000.00917.23
8.1.190.0080.00017.10
8.1.180.0030.00518.10
8.1.170.0000.00818.46
8.1.160.0000.00721.96
8.1.150.0000.00718.69
8.1.140.0060.00317.38
8.1.130.0000.00717.79
8.1.120.0050.00317.46
8.1.110.0000.00817.31
8.1.100.0000.00717.35
8.1.90.0030.00317.39
8.1.80.0030.00317.29
8.1.70.0000.00717.40
8.1.60.0060.00317.39
8.1.50.0090.00017.46
8.1.40.0070.00017.40
8.1.30.0050.00317.55
8.1.20.0040.00417.55
8.1.10.0040.00417.56
8.1.00.0000.00717.45
8.0.300.0000.00720.03
8.0.290.0040.00416.75
8.0.280.0030.00318.48
8.0.270.0000.00717.10
8.0.260.0060.00017.15
8.0.250.0000.00716.93
8.0.240.0060.00016.97
8.0.230.0040.00416.95
8.0.220.0000.00716.90
8.0.210.0000.00716.72
8.0.200.0100.00016.85
8.0.190.0080.00016.89
8.0.180.0040.00416.74
8.0.170.0060.00316.74
8.0.160.0040.00416.85
8.0.150.0000.00716.66
8.0.140.0040.00416.67
8.0.130.0000.00513.27
8.0.120.0040.00416.83
8.0.110.0040.00416.74
8.0.100.0040.00416.84
8.0.90.0000.00716.82
8.0.80.0070.00716.86
8.0.70.0040.00416.79
8.0.60.0000.00816.88
8.0.50.0070.00016.71
8.0.30.0030.01616.95
8.0.20.0100.01117.24
8.0.10.0130.00316.79
8.0.00.0090.01116.81
7.4.330.0030.00315.08
7.4.320.0030.00516.43
7.4.300.0060.00016.29
7.4.290.0060.00016.41
7.4.280.0000.00716.50
7.4.270.0000.00716.35
7.4.260.0040.00416.38
7.4.250.0030.00516.53
7.4.240.0070.00016.44
7.4.230.0040.00416.57
7.4.220.0070.01416.49
7.4.210.0120.00416.35
7.4.200.0000.00716.61
7.4.160.0110.00816.48
7.4.150.0080.01116.97
7.4.140.0110.00817.40
7.4.130.0150.00416.38
7.4.120.0100.00816.44
7.4.110.0050.01516.34
7.4.100.0070.01316.37
7.4.90.0250.00516.34
7.4.80.0120.00617.83
7.4.70.0080.01316.38
7.4.60.0080.00916.33
7.4.50.0070.00416.24
7.4.40.0050.01316.40
7.4.30.0140.00816.42
7.4.20.0040.01516.28
7.4.10.0080.01216.49
7.4.00.0070.00815.71
7.3.330.0000.00512.95
7.3.320.0000.00613.04
7.3.310.0040.00416.05
7.3.300.0000.00716.18
7.3.290.0100.00816.15
7.3.280.0050.01016.19
7.3.270.0090.01116.81
7.3.260.0100.01116.27
7.3.250.0100.00916.26
7.3.240.0050.01616.38
7.3.230.0120.01116.30
7.3.220.0180.00716.02
7.3.210.0060.01216.25
7.3.200.0140.00917.71
7.3.190.0100.01316.18
7.3.180.0110.00816.25
7.3.170.0050.01516.23
7.3.160.0070.01016.17
7.3.150.0210.00416.11
7.3.140.0050.01516.07
7.3.130.0090.01216.06
7.3.120.0030.01316.13
7.3.110.0120.00316.04
7.3.100.0180.00516.14
7.3.90.0100.00916.52
7.3.80.0100.00716.17
7.3.70.0070.01016.31
7.3.60.0040.01116.34
7.3.50.0100.01116.36
7.3.40.0090.01316.36
7.3.30.0090.00916.43
7.3.20.0120.00616.31
7.3.10.0160.00316.20
7.3.00.0150.00616.14
7.2.340.0170.00616.29
7.2.330.0080.01116.34
7.2.320.0080.01116.43
7.2.310.0060.01116.37
7.2.300.0080.01116.45
7.2.290.0070.01216.46
7.2.280.0160.00616.38
7.2.270.0120.00816.25
7.2.260.0100.00816.32
7.2.250.0000.01516.23
7.2.240.0080.00816.25
7.2.230.0040.01616.25
7.2.220.0170.00316.34
7.2.210.0070.01416.27
7.2.200.0030.02016.33
7.2.190.0050.01116.31
7.2.180.0160.00716.29
7.2.170.0000.02116.37
7.2.160.0120.01116.45
7.2.150.0030.01716.39
7.2.140.0100.01316.53
7.2.130.0030.01316.70
7.2.120.0070.01716.61
7.2.110.0090.01116.65
7.2.100.0140.01116.63
7.2.90.0130.00516.46
7.2.80.0100.00716.52
7.2.70.0050.01416.53
7.2.60.0070.01216.48
7.2.50.0180.00416.46
7.2.40.0060.01216.48
7.2.30.0090.01116.43
7.2.20.0130.00316.54
7.2.10.0130.00816.57
7.2.00.0090.01118.01
7.1.330.0080.01315.41
7.1.320.0110.00915.43
7.1.310.0060.01015.55
7.1.300.0030.01815.52
7.1.290.0080.01215.52
7.1.280.0090.00615.42
7.1.270.0100.00815.55
7.1.260.0090.00615.50
7.1.250.0110.00415.38
7.1.240.0150.00015.41
7.1.230.0200.00815.39
7.1.220.0070.00715.48
7.1.210.0050.01015.39
7.1.200.0090.00915.48
7.1.190.0100.01015.39
7.1.180.0270.01315.36
7.1.170.0060.01215.39
7.1.160.0090.00615.37
7.1.150.0110.00515.35
7.1.140.0060.01015.45
7.1.130.0180.00015.37
7.1.120.0140.00815.33
7.1.110.0150.00615.43
7.1.100.0130.00716.80
7.1.90.0140.00715.36
7.1.80.0190.00815.37
7.1.70.0080.00716.07
7.1.60.0170.00716.14
7.1.50.0140.01016.17
7.1.40.0320.00915.35
7.1.30.0140.01115.50
7.1.20.0170.00815.31
7.1.10.0190.00915.46
7.1.00.0000.04818.88
7.0.330.0060.00915.14
7.0.320.0100.00715.14
7.0.310.0070.01015.13
7.0.300.0130.00514.95
7.0.290.0090.01215.26
7.0.280.0040.01214.98
7.0.270.0170.00015.05
7.0.260.0110.00515.02
7.0.250.0030.01315.20
7.0.240.0150.00914.94
7.0.230.0140.00915.28
7.0.220.0120.00915.21
7.0.210.0160.00815.07
7.0.200.0080.01215.91
7.0.190.0150.00315.18
7.0.180.0110.01415.13
7.0.170.0080.00815.09
7.0.160.0310.01215.12
7.0.150.0120.00814.93
7.0.140.0060.04418.59
7.0.130.0100.01015.29
7.0.120.0120.00815.17
7.0.110.0180.01014.54
7.0.100.0110.02617.48
7.0.90.0270.04517.33
7.0.80.0100.02617.43
7.0.70.0080.04317.42
7.0.60.0080.04617.48
7.0.50.0110.02817.71
7.0.40.0120.04417.63
7.0.30.0150.04117.64
7.0.20.0350.02817.60
7.0.10.0050.02817.64
7.0.00.0100.03117.55
5.6.400.0140.00915.67
5.6.390.0000.01815.69
5.6.380.0090.00915.70
5.6.370.0080.00815.60
5.6.360.0060.01115.64
5.6.350.0090.00815.79
5.6.340.0110.01115.70
5.6.330.0090.01215.65
5.6.320.0210.01115.83
5.6.310.0210.00815.68
5.6.300.0200.00515.65
5.6.290.0100.01415.72
5.6.280.0120.03818.36
5.6.270.0150.01315.74
5.6.260.0180.01315.66
5.6.250.0080.04818.15
5.6.240.0140.02618.18
5.6.230.0090.03118.00
5.6.220.0120.04018.10
5.6.210.0070.04818.20
5.6.200.0080.04618.47
5.6.190.0100.04318.42
5.6.180.0070.03618.30
5.6.170.0080.04118.44
5.6.160.0030.03218.51
5.6.150.0110.04618.55
5.6.140.0120.04518.51
5.6.130.0140.04418.44
5.6.120.0110.05018.37
5.6.110.0110.04818.32
5.6.100.0100.05018.39
5.6.90.0160.03618.30
5.6.80.0050.03817.97
5.6.70.0080.04018.10
5.6.60.0070.03818.09
5.6.50.0090.04818.09
5.6.40.0090.02418.05
5.6.30.0080.02918.11
5.6.20.0060.04618.04
5.6.10.0070.03217.96
5.6.00.0070.04018.01
5.5.380.0120.03118.01
5.5.370.0150.04017.99
5.5.360.0140.04417.95
5.5.350.0160.03918.02
5.5.340.0170.03918.26
5.5.330.0160.02818.27
5.5.320.0160.05018.22
5.5.310.0170.04318.24
5.5.300.0160.04118.16
5.5.290.0130.04318.30
5.5.280.0170.04418.22
5.5.270.0150.04518.03
5.5.260.0230.04518.27
5.5.250.0130.03018.19
5.5.240.0140.04117.94
5.5.230.0120.03617.95
5.5.220.0110.04917.81
5.5.210.0140.02818.05
5.5.200.0150.03517.85
5.5.190.0130.04717.88
5.5.180.0070.04917.86
5.5.170.0190.01515.47
5.5.160.0120.04717.77
5.5.150.0140.03817.81
5.5.140.0150.02717.78
5.5.130.0090.04817.77
5.5.120.0170.04217.73
5.5.110.0100.03017.70
5.5.100.0160.02517.91
5.5.90.0120.03017.81
5.5.80.0220.03517.87
5.5.70.0120.05117.93
5.5.60.0100.03517.93
5.5.50.0110.04717.81
5.5.40.0190.02517.85
5.5.30.0120.02917.84
5.5.20.0110.03017.88
5.5.10.0180.03717.70
5.5.00.0120.04317.79
5.4.450.0160.03815.88
5.4.440.0130.03015.85
5.4.430.0130.04515.89
5.4.420.0130.04115.91
5.4.410.0150.03715.90
5.4.400.0180.04215.75
5.4.390.0150.04815.72
5.4.380.0130.03915.69
5.4.370.0120.04315.67
5.4.360.0120.02815.71
5.4.350.0070.03215.85
5.4.340.0090.04715.75
5.4.330.0160.00812.38
5.4.320.0090.03615.71
5.4.310.0090.02715.75
5.4.300.0100.02415.71
5.4.290.0110.02515.77
5.4.280.0160.02115.64
5.4.270.0180.04115.78
5.4.260.0090.04115.68
5.4.250.0120.03715.76
5.4.240.0110.02215.67
5.4.230.0120.02415.66
5.4.220.0120.03315.72
5.4.210.0110.02515.63
5.4.200.0130.02515.60
5.4.190.0080.03915.65
5.4.180.0110.02515.57
5.4.170.0070.04015.55
5.4.160.0160.03315.67
5.4.150.0170.03715.77
5.4.140.0110.03014.33
5.4.130.0070.03414.37
5.4.120.0130.03514.36
5.4.110.0080.04114.41
5.4.100.0150.02314.41
5.4.90.0110.03514.35
5.4.80.0110.03114.52
5.4.70.0110.03514.45
5.4.60.0060.04614.46
5.4.50.0130.03214.33
5.4.40.0120.04114.40
5.4.30.0090.02814.37
5.4.20.0090.03514.52
5.4.10.0070.03314.46
5.4.00.0090.02314.08

preferences:
63.57 ms | 401 KiB | 5 Q