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 . PHP_EOL . 'strlen = ' . $len . PHP_EOL . 'mb_strlen (' . $defaultEncoding . ') = ' . $mbLenDefault . PHP_EOL . '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)
8.3.60.0140.00018.30
8.3.50.0120.00522.03
8.3.40.0070.01418.67
8.3.30.0060.00918.79
8.3.20.0060.00320.09
8.3.10.0000.00821.92
8.3.00.0030.00720.54
8.2.180.0090.00916.50
8.2.170.0070.00722.96
8.2.160.0090.00919.26
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0040.00420.93
8.2.120.0070.00320.70
8.1.280.0040.01625.92
8.1.270.0080.00023.71
8.1.260.0030.00521.99
8.1.250.0000.00922.02
7.4.10.0140.00716.20
7.4.00.0100.01016.42
7.3.130.0060.00616.29
7.3.120.0070.01316.29
7.3.110.0040.01216.35
7.3.100.0060.01016.28
7.3.90.0100.01416.51
7.3.80.0110.01216.34
7.3.70.0230.00016.31
7.3.60.0030.01216.32
7.3.50.0180.01216.30
7.3.40.0190.00312.62
7.3.30.0070.01816.32
7.3.20.0050.01818.23
7.3.10.0080.00818.08
7.3.00.0210.00618.09
7.2.260.0110.01116.41
7.2.250.0090.01516.50
7.2.240.0030.01416.51
7.2.230.0030.01416.49
7.2.220.0160.01016.45
7.2.210.0200.00916.59
7.2.200.0180.01216.50
7.2.190.0030.01216.45
7.2.180.0100.01916.58
7.2.170.0100.01716.50
7.2.160.0220.00716.33
7.2.150.0150.01218.38
7.2.140.0190.01018.42
7.2.130.0130.01018.38
7.2.120.0180.01218.36
7.2.110.0240.00818.50
7.2.100.0130.01318.39
7.2.90.0240.00918.32
7.2.80.0140.01718.43
7.2.70.0160.00413.50
7.2.60.0110.01113.48
7.2.50.0200.01518.25
7.2.40.0220.00013.46
7.2.30.0200.01718.52
7.2.20.0150.01518.40
7.2.10.0150.00813.33
7.2.00.0120.00918.45
7.1.330.0040.01117.14
7.1.320.0110.01717.22
7.1.310.0210.00317.37
7.1.300.0120.00317.39
7.1.290.0140.01017.23
7.1.280.0100.01317.38
7.1.270.0170.01217.27
7.1.260.0120.01617.25
7.1.250.0110.01417.16
7.1.240.0180.00817.34
7.1.230.0090.01717.31
7.1.220.0180.00917.29
7.1.210.0260.00417.19
7.1.200.0110.01817.20
7.1.190.0130.01817.38
7.1.180.0130.00917.14
7.1.170.0210.00817.39
7.1.160.0170.01117.08
7.1.150.0080.02117.32
7.1.140.0160.01117.39
7.1.130.0130.01317.16
7.1.120.0110.01317.22
7.1.110.0160.01217.16
7.1.100.0110.01917.31
7.1.90.0140.01417.38
7.1.80.0150.01017.32
7.1.70.0200.00717.46
7.1.60.0210.01117.21
7.1.50.2020.01012.99
7.1.40.0220.00517.25
7.1.30.0210.00417.35
7.1.20.0140.01417.34
7.1.10.0130.01117.31
7.1.00.0130.04119.78
7.0.330.0190.00816.90
7.0.320.0120.01616.98
7.0.310.0040.01412.77
7.0.300.0240.00316.79
7.0.290.0270.00016.71
7.0.280.0120.01316.91
7.0.270.0110.01716.88
7.0.260.0160.01017.00
7.0.250.0150.01117.02
7.0.240.0210.00717.05
7.0.230.0110.01717.11
7.0.220.0330.00817.01
7.0.210.0120.01216.83
7.0.200.0150.01216.97
7.0.190.0190.01017.07
7.0.180.0120.01616.94
7.0.170.0120.01617.03
7.0.160.0180.00916.97
7.0.150.0120.01516.84
7.0.140.0120.04019.57
7.0.130.0090.01617.16
7.0.120.0110.03819.52
7.0.110.0110.04119.58
7.0.100.0090.03019.59
7.0.90.0130.03619.56
7.0.80.0150.02219.56
7.0.70.0100.03219.66
7.0.60.0110.02019.51
7.0.50.0080.04419.59
7.0.40.0090.03918.50
7.0.30.0040.04518.49
7.0.20.0090.03818.53
7.0.10.0070.04518.44
7.0.00.0110.04318.61
5.6.400.0200.00815.83
5.6.390.0170.00915.84
5.6.380.0120.01715.48
5.6.370.0180.01015.87
5.6.360.0180.00915.92
5.6.350.0180.00515.80
5.6.340.0180.01215.88
5.6.330.0240.00615.81
5.6.320.0120.01815.90
5.6.310.0040.02515.76
5.6.300.0160.01015.72
5.6.290.0170.01315.93
5.6.280.0110.04118.37
5.6.270.0210.00616.06
5.6.260.0130.03618.40
5.6.250.0120.02518.46
5.6.240.0070.03718.39
5.6.230.0090.02718.41
5.6.220.0060.03018.28
5.6.210.0080.02518.31
5.6.200.0070.04618.25
5.6.190.0080.04618.34
5.6.180.0160.03318.39
5.6.170.0150.03718.34
5.6.160.0090.03218.32
5.6.150.0100.02618.36
5.6.140.0060.04718.38
5.6.130.0120.02316.71
5.6.120.0070.03818.29
5.6.110.0090.02218.51
5.6.100.0130.02318.47
5.6.90.0070.02216.82
5.6.80.0070.03917.91
5.6.70.0100.04018.10
5.6.60.0070.04518.10
5.6.50.0140.03418.11
5.6.40.0080.02117.95
5.6.30.0040.02618.07
5.6.20.0130.02818.01
5.6.10.0070.03118.01
5.6.00.0090.02217.98
5.5.380.0070.06717.52
5.5.370.0000.05017.43
5.5.360.0030.05317.62
5.5.350.0000.04017.64
5.5.340.0030.06317.98
5.5.330.0030.07318.00
5.5.320.0000.07318.12
5.5.310.0070.07018.09
5.5.300.0070.05317.77
5.5.290.0000.08017.86
5.5.280.0100.06717.84
5.5.270.0000.04317.84
5.5.260.0000.03717.88
5.5.250.0000.03317.57
5.5.240.0000.04017.27
5.5.230.0030.07017.38
5.5.220.0000.05017.62
5.5.210.0030.07017.40
5.5.200.0000.03317.21
5.5.190.0030.03017.45
5.5.180.0000.06317.33
5.5.160.0030.03017.11
5.5.150.0070.04017.23
5.5.140.0000.05717.46
5.5.130.0000.07017.11
5.5.120.0000.04017.43
5.5.110.0030.03017.11
5.5.100.0000.03317.26
5.5.90.0000.03017.34
5.5.80.0030.02717.50
5.5.70.0000.03317.10
5.5.60.0000.03017.09
5.5.50.0000.03017.48
5.5.40.0000.03017.36
5.5.30.0000.03017.09
5.5.20.0030.03017.40
5.5.10.0030.03017.36
5.5.00.0030.03017.35
5.4.450.0000.07719.32
5.4.440.0070.04019.50
5.4.430.0000.03319.43
5.4.420.0030.03319.45
5.4.410.0070.05019.21
5.4.400.0000.03719.27
5.4.390.0000.06319.09
5.4.380.0000.06718.93
5.4.370.0070.03718.95
5.4.360.0000.03319.26
5.4.350.0000.03018.97
5.4.340.0030.03018.94
5.4.320.0000.04018.97
5.4.310.0000.06719.27
5.4.300.0000.07019.09
5.4.290.0030.07019.02
5.4.280.0030.06718.94
5.4.270.0030.04018.99
5.4.260.0000.03019.10
5.4.250.0030.02718.98
5.4.240.0000.03019.11
5.4.230.0030.02718.99
5.4.220.0030.03018.92
5.4.210.0000.03018.96
5.4.200.0030.02718.99
5.4.190.0000.03319.25
5.4.180.0000.03018.96
5.4.170.0000.03319.16
5.4.160.0000.03018.90
5.4.150.0100.03018.95
5.4.140.0000.05016.16
5.4.130.0000.06716.47
5.4.120.0000.04316.15
5.4.110.0000.03016.18
5.4.100.0030.02716.26
5.4.90.0000.03016.39
5.4.80.0000.03016.16
5.4.70.0030.05016.15
5.4.60.0100.05716.16
5.4.50.0000.04316.50
5.4.40.0030.04016.41
5.4.30.0070.06016.36
5.4.20.0030.07016.09
5.4.10.0000.06716.49
5.4.00.0030.04315.89
5.3.290.0000.03314.66
5.3.280.0030.02714.65
5.3.270.0030.03014.46
5.3.260.0030.03014.49
5.3.250.0030.03314.66
5.3.240.0030.03314.54
5.3.230.0000.07014.59
5.3.220.0000.03314.50
5.3.210.0030.03014.45
5.3.200.0000.03014.45
5.3.190.0000.03314.56
5.3.180.0030.06314.46
5.3.170.0030.06014.35
5.3.160.0030.06314.43
5.3.150.0030.06314.48
5.3.140.0000.03014.61
5.3.130.0030.05314.41
5.3.120.0030.07014.50
5.3.110.0030.06714.48
5.3.100.0030.06714.09
5.3.90.0030.06713.91
5.3.80.0000.05713.84
5.3.70.0030.06313.86
5.3.60.0030.06014.05
5.3.50.0070.05713.88
5.3.40.0000.06713.90
5.3.30.0030.06013.79
5.3.20.0030.04713.61
5.3.10.0000.04013.58
5.3.00.0000.07013.57
5.2.170.0000.06011.32
5.2.160.0000.05311.32
5.2.150.0030.05711.32
5.2.140.0030.05711.32
5.2.130.0000.03711.32
5.2.120.0000.03011.32
5.2.110.0030.03711.32
5.2.100.0030.04711.32
5.2.90.0030.05011.32
5.2.80.0070.04311.32
5.2.70.0030.05011.32
5.2.60.0030.03711.32
5.2.50.0000.02711.32
5.2.40.0030.02011.32
5.2.30.0000.02311.32
5.2.20.0000.02311.32
5.2.10.0000.02311.32
5.2.00.0070.01711.32
5.1.60.0030.01711.32
5.1.50.0000.02011.32
5.1.40.0030.02011.32
5.1.30.0000.02711.32
5.1.20.0070.02311.32
5.1.10.0030.02711.32
5.1.00.0030.03011.32
5.0.50.0000.02011.32
5.0.40.0070.02711.32
5.0.30.0000.03311.32
5.0.20.0030.01711.32
5.0.10.0070.02011.32
5.0.00.0000.04311.32
4.4.90.0000.02011.32
4.4.80.0000.01311.32
4.4.70.0000.01311.32
4.4.60.0000.01311.32
4.4.50.0000.01311.32
4.4.40.0000.02011.32
4.4.30.0000.01311.32
4.4.20.0000.01311.32
4.4.10.0000.02011.32
4.4.00.0000.02011.32
4.3.110.0000.02011.32
4.3.100.0000.01711.32
4.3.90.0000.01711.32
4.3.80.0030.02011.32
4.3.70.0000.01311.32
4.3.60.0030.01011.32
4.3.50.0000.01311.32
4.3.40.0000.02011.32
4.3.30.0000.01311.32
4.3.20.0000.01311.32
4.3.10.0000.01311.32
4.3.00.0000.02011.32

preferences:
64.53 ms | 401 KiB | 5 Q