3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'äëïöü'; $defaultEncoding = mb_internal_encoding(); $len = strlen($string); $mbLenDefault = mb_strlen($string); $mbLen = mb_strlen($string, 'UTF-8'); echo 'Default Encoding = ' . $defaultEncoding . "\n" . 'strlen = ' . $len . "\n" . 'mb_strlen (' . $defaultEncoding . ') = ' . $mbLenDefault . "\n" . 'mb_strlen (UTF-8) = ' . $mbLen ;

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)
8.3.60.0070.00718.56
8.3.50.0050.01122.05
8.3.40.0100.01018.71
8.3.30.0040.01119.09
8.3.20.0040.00420.34
8.3.10.0050.00321.96
8.3.00.0080.00022.59
8.2.180.0040.01416.32
8.2.170.0150.00022.96
8.2.160.0070.01019.04
8.2.150.0030.00724.18
8.2.140.0000.00924.66
8.2.130.0110.00726.16
8.2.120.0030.00717.50
8.2.110.0100.00022.29
8.2.100.0090.00319.45
8.2.90.0000.00719.22
8.2.80.0040.00417.97
8.2.70.0000.00817.50
8.2.60.0080.00018.05
8.2.50.0040.00418.07
8.2.40.0000.00918.22
8.2.30.0000.00718.05
8.2.20.0020.00517.53
8.2.10.0050.00217.61
8.2.00.0070.00017.72
8.1.280.0160.00625.92
8.1.270.0050.00322.14
8.1.260.0040.00426.35
8.1.250.0060.00328.09
8.1.240.0080.00023.82
8.1.230.0070.00319.17
8.1.220.0050.00317.74
8.1.210.0040.00418.77
8.1.200.0080.00317.23
8.1.190.0000.00717.38
8.1.180.0080.00018.61
8.1.170.0040.00418.70
8.1.160.0040.00422.14
8.1.150.0040.00418.63
8.1.140.0000.00717.41
8.1.130.0000.00617.70
8.1.120.0030.00317.35
8.1.110.0060.00317.45
8.1.100.0050.00317.33
8.1.90.0030.00417.36
8.1.80.0040.00417.36
8.1.70.0000.00717.46
8.1.60.0080.00017.55
8.1.50.0030.00617.64
8.1.40.0000.00717.56
8.1.30.0080.00017.54
8.1.20.0040.00417.70
8.1.10.0000.00717.55
8.1.00.0040.00417.53
8.0.300.0040.00418.77
8.0.290.0000.00717.28
8.0.280.0070.00018.43
8.0.270.0070.00017.23
8.0.260.0060.00016.79
8.0.250.0030.00316.97
8.0.240.0090.00016.91
8.0.230.0000.00716.92
8.0.220.0000.00716.85
8.0.210.0070.00016.82
8.0.200.0040.00416.90
8.0.190.0060.00316.92
8.0.180.0020.00516.99
8.0.170.0040.00416.86
8.0.160.0070.00017.07
8.0.150.0000.00816.77
8.0.140.0040.00416.89
8.0.130.0050.00013.41
8.0.120.0030.00516.94
8.0.110.0040.00417.01
8.0.100.0000.00716.83
8.0.90.0070.00016.89
8.0.80.0040.01116.93
8.0.70.0040.00416.82
8.0.60.0040.00416.93
8.0.50.0040.00416.77
8.0.30.0110.01017.13
8.0.20.0120.00617.40
8.0.10.0000.00816.89
8.0.00.0090.00916.61
7.4.330.0050.00015.09
7.4.320.0060.00016.60
7.4.300.0000.00616.57
7.4.290.0040.00416.46
7.4.280.0030.00316.58
7.4.270.0030.00316.50
7.4.260.0030.00316.59
7.4.250.0070.00016.41
7.4.240.0040.00316.54
7.4.230.0000.00716.61
7.4.220.0100.00716.64
7.4.210.0090.00516.51
7.4.200.0000.00716.61
7.4.190.0070.00016.59
7.4.160.0140.00316.63
7.4.150.0130.00317.40
7.4.140.0080.01217.86
7.4.130.0120.00816.49
7.4.120.0110.00816.49
7.4.110.0040.01516.46
7.4.100.0140.00316.35
7.4.90.0130.01016.55
7.4.80.0140.00319.39
7.4.70.0070.01016.40
7.4.60.0040.01216.49
7.4.50.0030.00616.31
7.4.40.0070.01122.77
7.4.30.0030.02116.55
7.4.00.0000.01614.86
7.3.330.0000.00513.24
7.3.320.0050.00013.13
7.3.310.0070.00016.42
7.3.300.0070.00016.23
7.3.290.0110.00316.34
7.3.280.0060.01016.29
7.3.270.0080.00817.40
7.3.260.0060.01616.57
7.3.250.0100.00816.58
7.3.240.0150.00316.33
7.3.230.0080.00816.39
7.3.210.0140.00316.40
7.3.200.0060.01119.39
7.3.190.0100.00716.45
7.3.180.0080.00816.31
7.3.170.0030.01316.51
7.3.160.0100.00616.57
7.3.120.0030.01014.58
7.2.330.0120.00616.65
7.2.320.0070.01216.57
7.2.310.0170.00316.42
7.2.300.0050.01416.78
7.2.290.0070.01416.61
7.1.70.0000.00816.84
7.1.60.0170.00719.82
7.1.50.0090.01217.03
7.1.00.0070.08022.33
7.0.200.0000.00716.82
7.0.140.0030.07322.04
7.0.100.0070.08319.89
7.0.90.0200.06319.94
7.0.80.0070.06320.01
7.0.70.0230.03320.13
7.0.60.0130.06719.88
7.0.50.0300.05020.27
7.0.40.0030.05720.02
7.0.30.0030.07020.07
7.0.20.0170.07320.16
7.0.10.0100.08020.03
7.0.00.0030.04720.13
5.6.280.0070.07021.14
5.6.250.0070.08020.66
5.6.240.0070.05320.53
5.6.230.0170.06320.62
5.6.220.0100.08320.73
5.6.210.0030.06320.55
5.6.200.0030.09021.06
5.6.190.0100.08021.05
5.6.180.0030.06721.04
5.6.170.0070.08321.04
5.6.160.0030.08721.06
5.6.150.0030.05320.99
5.6.140.0100.03721.04
5.6.130.0170.07021.04
5.6.120.0130.04321.11
5.6.110.0030.08020.92
5.6.100.0030.04721.00
5.6.90.0100.06720.89
5.6.80.0070.07720.38
5.6.70.0070.07320.53
5.6.60.0170.04320.43
5.6.50.0130.07320.39
5.6.40.0100.07720.47
5.6.30.0100.03720.44
5.6.20.0070.04320.35
5.6.10.0100.06720.29
5.6.00.0000.08720.36
5.5.380.0100.05720.49
5.5.370.0100.04320.54
5.5.360.0130.07720.40
5.5.350.0100.05720.45
5.5.340.0070.06720.84
5.5.330.0100.08320.75
5.5.320.0070.08020.81
5.5.310.0030.07320.73
5.5.300.0100.09320.89
5.5.290.0000.05720.90
5.5.280.0000.05320.85
5.5.270.0100.08320.72
5.5.260.0100.06020.88
5.5.250.0130.07720.59
5.5.240.0170.05720.25
5.5.230.0100.07720.26
5.5.220.0100.07320.18
5.5.210.0130.07320.19
5.5.200.0170.06320.26
5.5.190.0030.05020.26
5.5.180.0070.07720.22
5.5.160.0070.05720.14
5.5.150.0130.06020.23
5.5.140.0070.07320.25
5.5.130.0100.07320.06
5.5.120.0030.04720.22
5.5.110.0070.07320.22
5.5.100.0100.07020.05
5.5.90.0070.08320.13
5.5.80.0000.06720.14
5.5.70.0070.07320.14
5.5.60.0030.07020.14
5.5.50.0100.06019.94
5.5.40.0130.07020.02
5.5.30.0100.04320.07
5.5.20.0170.03320.02
5.5.10.0070.03720.05
5.5.00.0070.08020.00
5.4.450.0130.03319.23
5.4.440.0170.07719.13
5.4.430.0030.05019.35
5.4.420.0130.07319.36
5.4.410.0030.08319.16
5.4.400.0130.06319.10
5.4.390.0030.07319.03
5.4.380.0070.07719.14
5.4.370.0030.04319.03
5.4.360.0130.03318.91
5.4.350.0100.06019.09
5.4.340.0130.07019.04
5.4.320.0100.07318.98
5.4.310.0130.07318.98
5.4.300.0100.06719.05
5.4.290.0030.07719.03
5.4.280.0130.06318.81
5.4.270.0100.07019.03
5.4.260.0130.06718.90
5.4.250.0100.07018.78
5.4.240.0100.05718.93
5.4.230.0130.06719.04
5.4.220.0070.08018.80
5.4.210.0100.07318.94
5.4.200.0070.06719.02
5.4.190.0030.06018.99
5.4.180.0070.03718.77
5.4.170.0030.04019.08
5.4.160.0030.04019.09
5.4.150.0000.04319.20
5.4.140.0000.04016.18
5.4.130.0030.03716.33
5.4.120.0070.03716.27
5.4.110.0070.03716.45
5.4.100.0100.03016.43
5.4.90.0030.03016.42
5.4.80.0070.02716.20
5.4.70.0000.03716.42
5.4.60.0000.03016.29
5.4.50.0000.04316.20
5.4.40.0070.03316.47
5.4.30.0030.03316.17
5.4.20.0030.03716.34
5.4.10.0030.03316.24
5.4.00.0000.03315.74
5.3.290.0070.07014.66
5.3.280.0130.06714.46
5.3.270.0130.03714.59
5.3.260.0000.04314.44
5.3.250.0100.03014.59
5.3.240.0000.04714.58
5.3.230.0000.04314.58
5.3.220.0000.04714.42
5.3.210.0030.04014.39
5.3.200.0030.03714.52
5.3.190.0130.02314.55
5.3.180.0070.03714.50
5.3.170.0000.04014.52
5.3.160.0070.02714.39
5.3.150.0070.05014.49
5.3.140.0070.03314.42
5.3.130.0070.03714.54
5.3.120.0030.03714.38
5.3.110.0030.05014.48
5.3.100.0070.03314.02
5.3.90.0100.02713.99
5.3.80.0030.03713.78
5.3.70.0030.03714.02
5.3.60.0000.04013.98
5.3.50.0030.06313.90
5.3.40.0000.04713.70
5.3.30.0030.03013.90
5.3.20.0030.04013.68
5.3.10.0130.03013.63
5.3.00.0030.04013.62
5.2.170.0030.02711.10
5.2.160.0100.05011.14
5.2.150.0000.03311.19
5.2.140.0030.03011.16
5.2.130.0070.03011.05
5.2.120.0030.02711.13
5.2.110.0000.02711.18
5.2.100.0070.02311.08
5.2.90.0070.02311.10
5.2.80.0070.02711.09
5.2.70.0070.02311.16
5.2.60.0030.03010.89
5.2.50.0070.02311.00
5.2.40.0000.03010.95
5.2.30.0000.03010.97
5.2.20.0070.02311.02
5.2.10.0030.03310.99
5.2.00.0000.03010.66
5.1.60.0030.0239.98
5.1.50.0000.02710.06
5.1.40.0030.02710.09
5.1.30.0000.02710.45
5.1.20.0030.02310.35
5.1.10.0000.02310.09
5.1.00.0070.01710.05
5.0.50.0000.0209.85
5.0.40.0030.0179.85
5.0.30.0100.0209.85
5.0.20.0030.0179.85
5.0.10.0070.0139.85
5.0.00.0030.0239.85
4.4.90.0030.0139.85
4.4.80.0030.0139.85
4.4.70.0070.0109.85
4.4.60.0030.0139.85
4.4.50.0000.0239.85
4.4.40.0030.0209.85
4.4.30.0000.0179.85
4.4.20.0000.0139.85
4.4.10.0070.0109.85
4.4.00.0030.0279.85
4.3.110.0000.0209.85
4.3.100.0030.0139.85
4.3.90.0030.0109.85
4.3.80.0000.0239.85
4.3.70.0070.0139.85
4.3.60.0000.0139.85
4.3.50.0000.0309.85
4.3.40.0000.0239.85
4.3.30.0000.0139.85
4.3.20.0000.0179.85
4.3.10.0030.0139.85
4.3.00.0000.0179.85

preferences:
38.88 ms | 400 KiB | 5 Q