3v4l.org

run code in 300+ PHP versions simultaneously
<?php $ascii = 'foo'; var_dump(mb_check_encoding($ascii, 'UTF-8')); var_dump(mb_check_encoding($ascii, 'ASCII')); $utf8 = 'Österreich'; var_dump(mb_check_encoding($utf8, 'UTF-8')); var_dump(mb_check_encoding($utf8, 'ASCII')); $jp = '日本語'; var_dump(mb_check_encoding($jp, 'UTF-8')); var_dump(mb_check_encoding($jp, 'ASCII'));

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)
8.3.60.0070.00718.13
8.3.50.0110.00822.85
8.3.40.0040.01118.59
8.3.30.0070.00719.15
8.3.20.0040.00420.34
8.3.10.0070.00021.86
8.3.00.0080.00018.89
8.2.180.0150.00616.38
8.2.170.0110.00422.96
8.2.160.0130.00720.47
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0030.00526.16
8.2.120.0000.00821.09
8.2.110.0070.00321.13
8.2.100.0090.00317.66
8.2.90.0080.00019.38
8.2.80.0040.00418.09
8.2.70.0050.00317.79
8.2.60.0040.00417.63
8.2.50.0040.00418.10
8.2.40.0060.00320.55
8.2.30.0040.00420.73
8.2.20.0000.00817.66
8.2.10.0000.00818.13
8.2.00.0080.00017.74
8.1.280.0040.01125.92
8.1.270.0090.00018.71
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0040.00422.38
8.1.230.0070.00420.96
8.1.220.0000.00917.74
8.1.210.0000.00818.77
8.1.200.0030.00617.22
8.1.190.0040.00417.23
8.1.180.0000.01018.10
8.1.170.0040.00418.59
8.1.160.0050.00318.88
8.1.150.0070.00020.21
8.1.140.0030.00617.46
8.1.130.0000.00717.91
8.1.120.0000.00717.38
8.1.110.0070.00017.51
8.1.100.0000.00717.32
8.1.90.0040.00417.48
8.1.80.0040.00417.48
8.1.70.0030.00317.46
8.1.60.0080.00017.46
8.1.50.0030.00517.55
8.1.40.0030.00617.37
8.1.30.0040.00417.68
8.1.20.0040.00417.56
8.1.10.0020.00517.38
8.1.00.0000.00817.48
8.0.300.0040.00419.93
8.0.290.0030.00516.63
8.0.280.0000.00718.29
8.0.270.0030.00317.13
8.0.260.0040.00417.32
8.0.250.0040.00416.97
8.0.240.0050.00217.03
8.0.230.0030.00317.01
8.0.220.0040.00416.90
8.0.210.0040.00416.93
8.0.200.0060.00016.84
8.0.190.0030.00616.84
8.0.180.0070.00016.81
8.0.170.0000.00816.86
8.0.160.0000.00716.91
8.0.150.0050.00216.88
8.0.140.0080.00316.80
8.0.130.0000.00513.29
8.0.120.0080.00016.86
8.0.110.0070.00016.87
8.0.100.0000.00816.88
8.0.90.0040.00416.71
8.0.80.0090.01216.84
8.0.70.0040.00416.70
8.0.60.0000.00716.69
8.0.50.0000.00716.93
8.0.30.0100.01017.09
8.0.20.0090.01017.40
8.0.10.0040.00416.77
8.0.00.0080.00916.78
7.4.330.0070.00015.13
7.4.320.0070.00016.65
7.4.300.0060.00016.60
7.4.290.0000.00716.59
7.4.280.0070.00016.59
7.4.270.0000.00716.63
7.4.260.0000.00716.63
7.4.250.0000.00716.42
7.4.240.0050.00216.56
7.4.230.0000.00716.30
7.4.220.0130.01016.56
7.4.210.0070.01016.50
7.4.200.0040.00416.61
7.4.160.0060.01516.52
7.4.150.0100.00717.40
7.4.140.0120.01017.86
7.4.130.0100.00916.40
7.4.120.0090.00916.37
7.4.110.0140.00816.39
7.4.100.0180.00616.36
7.4.90.0060.01216.45
7.4.80.0030.01319.39
7.4.70.0120.00316.56
7.4.60.0030.01416.36
7.4.50.0060.00316.38
7.4.40.0090.00916.46
7.4.30.0120.00916.30
7.4.00.0030.01014.96
7.3.330.0030.00313.13
7.3.320.0000.00613.13
7.3.310.0040.00416.28
7.3.300.0030.00316.19
7.3.290.0070.00816.19
7.3.280.0110.00816.21
7.3.270.0000.01817.40
7.3.260.0190.00016.43
7.3.250.0110.00516.50
7.3.240.0110.00616.22
7.3.230.0040.01416.39
7.3.210.0100.00716.32
7.3.200.0100.00619.39
7.3.190.0060.01216.35
7.3.180.0100.00616.29
7.3.170.0120.00416.27
7.3.160.0060.00916.15
7.3.10.0050.00516.35
7.3.00.0090.00316.35
7.2.330.0060.01016.70
7.2.320.0090.00616.47
7.2.310.0100.01316.36
7.2.300.0100.00616.55
7.2.290.0140.00516.29
7.2.130.0000.01216.42
7.2.120.0060.01016.52
7.2.110.0070.01016.56
7.2.100.0000.00716.58
7.2.90.0000.01516.16
7.2.80.0100.00716.16
7.2.70.0100.00516.55
7.2.60.0110.00416.69
7.2.50.0050.01016.62
7.2.40.0070.01016.74
7.2.30.0040.00716.43
7.2.20.0070.00716.62
7.2.10.0060.00616.42
7.2.00.0050.01117.87
7.1.250.0130.00615.57
7.1.200.0070.00415.50
7.1.100.0040.00818.26
7.1.70.0040.00816.81
7.1.60.0100.01419.57
7.1.50.0100.00716.62
7.1.00.0070.07322.51
7.0.200.0030.01216.41
7.0.140.0070.06022.00
7.0.60.0000.08719.95
7.0.50.0100.05317.90
7.0.40.0030.09020.27
7.0.30.0230.04720.18
7.0.20.0230.07720.03
7.0.10.0130.07720.13
7.0.00.0000.04320.15
5.6.280.0030.07320.77
5.6.210.0070.04020.46
5.6.200.0070.08318.08
5.6.190.0170.07720.61
5.6.180.0270.04320.43
5.6.170.0230.04320.51
5.6.160.0100.06320.61
5.6.150.0070.08018.17
5.6.140.0100.07718.11
5.6.130.0100.05018.07
5.6.120.0070.08021.04
5.6.110.0130.04721.04
5.6.100.0100.06720.88
5.6.90.0030.06721.09
5.6.80.0030.04020.37
5.5.350.0230.08320.43
5.5.340.0130.08018.02
5.5.330.0100.07320.48
5.5.320.0230.04720.20
5.5.310.0400.07020.27
5.5.300.0030.08317.96
5.5.290.0070.08317.96
5.5.280.0030.08720.98
5.5.270.0000.08320.86
5.5.260.0170.08020.61
5.5.250.0170.07320.57
5.5.240.0070.06020.18
5.4.450.0770.05019.64
5.4.440.0100.06319.32
5.4.430.0070.05719.48
5.4.420.0200.06019.39
5.4.410.0170.04719.34
5.4.400.0130.05318.85
5.4.390.0070.05718.98
5.4.380.0230.04718.53
5.4.370.0100.05718.45
5.4.360.0200.04718.55
5.4.350.0170.05718.64
5.4.340.0200.05018.53
5.4.320.0200.05018.66
5.4.310.0170.05018.57
5.4.300.0200.05018.55
5.4.290.0200.05018.48
5.4.280.0100.06018.64
5.4.270.0100.06018.59
5.4.260.0270.05718.53
5.4.250.0270.06718.64
5.4.240.0230.06018.52
5.4.230.0130.05318.66
5.4.220.0300.05018.54
5.4.210.0170.05318.61
5.4.200.0200.04716.43
5.4.190.0130.06318.55
5.4.180.0170.05718.54
5.4.170.0130.06318.50
5.4.160.0200.05318.50
5.4.150.0200.05018.61
5.4.140.0170.05016.10
5.4.130.0200.05016.36
5.4.120.0230.04016.31
5.4.110.0170.04316.17
5.4.100.0200.05316.23
5.4.90.0200.05016.11
5.4.80.0130.05016.08
5.4.70.0170.05016.10
5.4.60.0130.05716.21
5.4.50.0100.05316.14
5.4.40.0170.05016.05
5.4.30.0130.05016.10
5.4.20.0130.05316.09
5.4.10.0170.05016.13
5.4.00.0070.05715.68
5.3.290.0230.04714.66
5.3.280.0170.05014.66
5.3.270.0170.06014.70
5.3.260.0130.05714.54
5.3.250.0130.05014.65
5.3.240.0000.06314.60
5.3.230.0170.04714.59
5.3.220.0200.04714.54
5.3.210.0130.05314.50
5.3.200.0130.05314.55
5.3.190.0170.05314.60
5.3.180.0030.06014.61
5.3.170.0270.03714.52
5.3.160.0170.05014.55
5.3.150.0130.07014.47
5.3.140.0030.06014.53
5.3.130.0200.04714.55
5.3.120.0200.05014.64
5.3.110.0070.06014.44
5.3.100.0170.04713.96
5.3.90.0170.04713.91
5.3.80.0100.05313.96
5.3.70.0130.05013.91
5.3.60.0130.05013.96
5.3.50.0070.05714.04
5.3.40.0070.05713.89
5.3.30.0130.05014.01
5.3.20.0100.05013.65
5.3.10.0100.05013.76
5.3.00.0200.04313.74
5.2.170.0170.04011.13
5.2.160.0230.03011.05
5.2.150.0170.03711.29
5.2.140.0130.04011.13
5.2.130.0100.04011.01
5.2.120.0030.04711.16
5.2.110.0100.04011.16
5.2.100.0170.03311.05
5.2.90.0170.03311.03
5.2.80.0230.04011.04
5.2.70.0200.03311.23
5.2.60.0100.04311.02
5.2.50.0130.04011.07
5.2.40.0170.03311.13
5.2.30.0130.04011.05
5.2.20.0100.04011.03
5.2.10.0100.04010.97
5.2.00.0070.04310.72
5.1.60.0130.03010.05
5.1.50.0100.0339.97
5.1.40.0100.0409.95
5.1.30.0070.04310.39
5.1.20.0200.04010.35
5.1.10.0070.03710.13
5.1.00.0100.03710.21
5.0.50.0070.0308.54
5.0.40.0100.0238.44
5.0.30.0030.0478.25
5.0.20.0100.0238.29
5.0.10.0130.0208.25
5.0.00.0100.0378.28
4.4.90.0070.0205.88
4.4.80.0000.0235.86
4.4.70.0030.0235.89
4.4.60.0070.0205.92
4.4.50.0100.0135.94
4.4.40.0030.0375.90
4.4.30.0030.0235.86
4.4.20.0030.0235.95
4.4.10.0030.0236.00
4.4.00.0070.0335.93
4.3.110.0100.0175.76
4.3.100.0070.0205.75
4.3.90.0070.0175.80
4.3.80.0030.0335.82
4.3.70.0070.0175.78
4.3.60.0070.0175.82
4.3.50.0000.0305.79
4.3.40.0070.0305.78
4.3.30.0030.0234.57
4.3.20.0030.0204.54
4.3.10.0000.0234.62
4.3.00.0170.0177.05

preferences:
78.81 ms | 401 KiB | 5 Q