3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = "Şef"; for ($x = 0; $x < 1000; ++$x) { for ($i = 0; $i < iconv_strlen($str, 'utf-8'); $i++) { echo iconv_substr($str, $i, 1, 'utf-8').'<br>'; } }

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)
8.3.40.0170.02018.59
8.3.30.0140.02120.38
8.3.20.0090.00920.59
8.3.10.0030.01621.08
8.3.00.0080.00623.40
8.2.170.0200.02022.96
8.2.160.0190.01620.38
8.2.150.0110.00424.18
8.2.140.0040.01124.66
8.2.130.0060.00926.16
8.2.120.0080.00621.05
8.2.110.0150.00820.38
8.2.100.0060.01917.77
8.2.90.0070.01018.22
8.2.80.0110.01417.97
8.2.70.0090.00917.63
8.2.60.0070.01018.04
8.2.50.0110.00718.07
8.2.40.0070.01418.16
8.2.30.0070.01019.49
8.2.20.0030.01317.68
8.2.10.0060.01217.51
8.2.00.0030.01317.57
8.1.270.0040.01123.99
8.1.260.0040.01526.35
8.1.250.0110.00428.09
8.1.240.0100.01022.18
8.1.230.0100.01720.97
8.1.220.0030.01417.74
8.1.210.0030.01318.77
8.1.200.0070.01117.22
8.1.190.0070.01517.38
8.1.180.0070.01518.10
8.1.170.0090.00918.66
8.1.160.0060.01018.89
8.1.150.0060.01218.54
8.1.140.0080.00817.31
8.1.130.0030.01217.83
8.1.120.0060.01017.51
8.1.110.0000.01817.43
8.1.100.0030.01317.42
8.1.90.0040.01517.39
8.1.80.0030.01317.45
8.1.70.0030.01717.31
8.1.60.0070.01117.48
8.1.50.0030.01617.48
8.1.40.0080.01917.50
8.1.30.0100.00617.55
8.1.20.0100.00717.63
8.1.10.0070.01317.53
8.1.00.0000.01917.43
8.0.300.0030.01320.23
8.0.290.0000.01617.04
8.0.280.0030.01318.35
8.0.270.0090.00617.18
8.0.260.0060.00916.83
8.0.250.0040.01516.96
8.0.240.0030.02116.88
8.0.230.0060.01016.84
8.0.220.0000.02216.84
8.0.210.0000.01716.89
8.0.200.0030.01716.87
8.0.190.0100.00716.95
8.0.180.0000.01716.90
8.0.170.0040.01516.89
8.0.160.0070.01016.93
8.0.150.0000.01616.89
8.0.140.0000.01616.86
8.0.130.0060.00013.33
8.0.120.0070.01417.02
8.0.110.0030.02017.00
8.0.100.0070.01317.07
8.0.90.0040.01417.08
8.0.80.0130.02316.98
8.0.70.0030.01517.09
8.0.60.0030.01616.84
8.0.50.0150.00316.93
8.0.30.0220.03017.10
8.0.20.0230.02917.48
8.0.10.0030.01616.96
8.0.00.0220.02916.79
7.4.330.0020.00216.83
7.4.320.0060.01316.47
7.4.300.0040.01516.39
7.4.290.0030.01416.51
7.4.280.0070.01016.40
7.4.270.0060.01016.60
7.4.260.0050.00013.27
7.4.250.0100.01416.50
7.4.240.0030.01716.53
7.4.230.0030.01516.44
7.4.220.0190.02816.52
7.4.210.0150.02216.65
7.4.200.0030.01416.42
7.4.190.0040.01916.67
7.4.160.0230.03216.46
7.4.150.0250.01917.40
7.4.140.0200.03717.86
7.4.130.0270.03116.63
7.4.120.0190.03716.52
7.4.110.0350.01316.66
7.4.100.0100.03716.45
7.4.90.0130.03616.58
7.4.80.0090.04419.39
7.4.70.0100.03416.39
7.4.60.0140.03416.47
7.4.50.0040.01216.51
7.4.40.0030.02522.77
7.4.30.0070.03916.41
7.4.00.0070.02714.90
7.3.330.0030.00313.25
7.3.320.0040.00413.30
7.3.310.0030.01516.37
7.3.300.0100.00716.37
7.3.290.0060.02916.36
7.3.280.0100.03416.46
7.3.270.0340.02017.40
7.3.260.0210.04218.24
7.3.250.0290.02616.48
7.3.240.0320.03816.70
7.3.230.0150.04916.64
7.3.210.0290.02616.63
7.3.200.0260.03619.39
7.3.190.0130.03516.27
7.3.180.0240.04416.47
7.3.170.0160.03616.52
7.3.160.0120.03216.49
7.3.120.0070.02115.19
7.3.10.0080.02016.68
7.3.00.0130.02216.77
7.2.330.0150.03116.61
7.2.320.0300.04016.43
7.2.310.0240.02116.81
7.2.300.0160.04516.76
7.2.290.0180.02716.71
7.2.130.0100.01916.89
7.2.120.0070.02417.02
7.2.110.0050.02317.00
7.2.100.0100.02216.89
7.2.90.0130.02416.99
7.2.80.0090.02116.87
7.2.70.0100.01717.14
7.2.60.0110.01917.01
7.2.50.0020.02717.08
7.2.40.0060.01917.04
7.2.30.0090.02317.03
7.2.20.0140.01717.03
7.2.10.0150.02016.96
7.2.00.0150.01817.93
7.1.250.0100.01815.80
7.1.200.0130.01915.89
7.1.100.0100.02018.31
7.1.70.0110.01117.39
7.1.60.0070.01717.61
7.1.50.0070.01716.93
7.1.40.0130.01017.00
7.1.30.0080.01916.84
7.1.20.0360.01616.87
7.1.10.0110.01416.64
7.1.00.0140.02417.04
7.0.200.0030.01916.99
7.0.190.0080.01516.97
7.0.180.0100.01316.70
7.0.170.0000.01916.52
7.0.160.0140.01716.63
7.0.150.0070.02016.40
7.0.140.0030.01516.47
7.0.130.0100.04216.64
7.0.120.0140.01016.68
7.0.110.0100.01616.50
7.0.100.0040.02216.70
7.0.90.0170.01316.48
7.0.80.0030.01716.70
7.0.70.0030.02016.45
7.0.60.0070.01816.47
7.0.50.0070.03016.55
7.0.40.0030.02315.66
7.0.30.0030.02215.66
7.0.20.0030.02015.66
7.0.10.0030.01915.66
7.0.00.0030.01615.66
5.6.300.0100.05121.00
5.6.290.0130.08520.95
5.6.280.0100.04721.10
5.6.270.0070.06721.04
5.6.260.0070.05421.13
5.6.250.0430.04320.87
5.6.240.0100.05920.91
5.6.230.0070.06521.04
5.6.220.0070.05621.03
5.6.210.0030.05920.73
5.6.200.0030.05821.02
5.6.190.0100.06220.93
5.6.180.0070.06020.93
5.6.170.0100.05220.90
5.6.160.0100.05920.89
5.6.150.0070.05721.07
5.6.140.0160.05220.92
5.6.130.0130.05620.96
5.6.120.0070.06121.11
5.6.110.0130.05721.09
5.6.100.0100.06121.00
5.6.90.0030.06221.00
5.6.80.0130.06720.31
5.6.70.0030.05620.29
5.6.60.0100.05920.45
5.6.50.0030.06320.31
5.6.40.0100.04720.47
5.6.30.0130.05020.29
5.6.20.0260.04620.31
5.6.10.0160.04620.42
5.6.00.0000.05720.27
5.5.380.0340.05717.43
5.5.370.0000.05017.55
5.5.360.0030.04117.49
5.5.350.0070.04017.53
5.5.340.0130.05417.98
5.5.330.0200.05318.16
5.5.320.0130.05318.21
5.5.310.0230.04318.16
5.5.300.0140.05117.88
5.5.290.0030.07118.07
5.5.280.0000.06717.89
5.5.270.0070.05518.09
5.5.260.0070.05517.84
5.5.250.0390.05217.66
5.5.240.0100.04717.55
5.5.230.0030.05417.54
5.5.220.0070.08217.54
5.5.210.0100.04917.61
5.5.200.0100.05117.48
5.5.190.0130.04917.53
5.5.180.0070.05417.46
5.5.160.0030.05617.20
5.5.150.0130.04517.32
5.5.140.0200.04417.51
5.5.130.0070.06117.46
5.5.120.0000.06417.60
5.5.110.0030.05417.19
5.5.100.0160.08917.41
5.5.90.0030.05117.46
5.5.80.0130.04917.14
5.5.70.0000.06117.31
5.5.60.0070.05317.13
5.5.50.0100.05217.21
5.5.40.0030.05117.08
5.5.30.0060.04817.40
5.5.20.0590.04617.39
5.5.10.0160.04517.39
5.5.00.0070.06117.31
5.4.450.0130.05019.63
5.4.440.0100.06019.48
5.4.430.0070.05719.55
5.4.420.0200.07819.49
5.4.410.0100.04419.20
5.4.400.0000.06419.16
5.4.390.0100.10219.17
5.4.380.0070.06019.22
5.4.370.0070.04919.13
5.4.360.0030.06719.29
5.4.350.0030.05919.01
5.4.340.0070.06419.02
5.4.320.0230.06919.21
5.4.310.0100.04819.00
5.4.300.0160.04519.00
5.4.290.0070.05319.20
5.4.280.0230.04619.10
5.4.270.0000.05619.20
5.4.260.0100.04519.29
5.4.250.0130.05719.12
5.4.240.0130.05519.04
5.4.230.0100.04919.29
5.4.220.0160.04819.27
5.4.210.0130.04319.00
5.4.200.0060.05119.26
5.4.190.0030.06319.00
5.4.180.0030.05319.12
5.4.170.0000.05819.00
5.4.160.0100.05319.20
5.4.150.0130.05319.27
5.4.140.0000.06016.53
5.4.130.0030.05516.70
5.4.120.0000.05716.80
5.4.110.0070.05316.70
5.4.100.0260.05316.79
5.4.90.0000.06216.55
5.4.80.0070.05216.76
5.4.70.0160.03916.87
5.4.60.0170.05616.77
5.4.50.0070.04416.76
5.4.40.0000.07116.73
5.4.30.0100.05116.81
5.4.20.0100.04716.74
5.4.10.0070.04616.52
5.4.00.0000.05316.16
5.3.290.0070.04915.66
5.3.280.0000.05715.66
5.3.270.0030.05115.66
5.3.260.0160.05215.66
5.3.250.0100.04915.66
5.3.240.0070.05415.66
5.3.230.0170.08015.66
5.3.220.0090.04415.66
5.3.210.0140.05615.66
5.3.200.0070.05415.66
5.3.190.0070.04915.66
5.3.180.0130.04715.66
5.3.170.0060.05215.66
5.3.160.0160.04615.66
5.3.150.0030.05515.66
5.3.140.0360.05315.66
5.3.130.0000.06215.66
5.3.120.0000.06215.66
5.3.110.0140.04715.66
5.3.100.0150.04315.66
5.3.90.0030.05115.66
5.3.80.0140.04015.66
5.3.70.0100.04815.66
5.3.60.0030.05415.66
5.3.50.0100.04515.66
5.3.40.0130.07615.66
5.3.30.0100.04915.66
5.3.20.0100.05015.66
5.3.10.0030.06215.66
5.3.00.0030.05515.66
5.2.170.0070.03915.66
5.2.160.0170.07915.66
5.2.150.0170.03015.66
5.2.140.0030.04915.66
5.2.130.0100.04215.66
5.2.120.0030.04515.66
5.2.110.0000.05215.66
5.2.100.0070.04715.66
5.2.90.0000.06615.66
5.2.80.0070.04615.66
5.2.70.0070.04315.66
5.2.60.0000.05715.66
5.2.50.0130.03515.66
5.2.40.0070.04715.66
5.2.30.0070.04315.66
5.2.20.0100.03415.66
5.2.10.0030.04015.66
5.2.00.0070.04115.66
5.1.60.0090.03815.66
5.1.50.0100.03115.66
5.1.40.0000.04415.66
5.1.30.0000.04315.66
5.1.20.0130.03715.66
5.1.10.0130.03615.66
5.1.00.0100.03615.66
5.0.50.0060.03515.66
5.0.40.0070.04515.66
5.0.30.0030.04715.66
5.0.20.0030.03715.66
5.0.10.0130.02615.66
5.0.00.0000.04815.66
4.4.90.0040.01415.66
4.4.80.0030.01315.66
4.4.70.0000.02115.66
4.4.60.0000.01615.66
4.4.50.0050.01115.66
4.4.40.0000.02815.66
4.4.30.0000.02115.66
4.4.20.0030.01515.66
4.4.10.0000.02115.66
4.4.00.0030.02315.66
4.3.110.0100.01615.66
4.3.100.0000.01715.66
4.3.90.0030.01415.66
4.3.80.0030.02215.66
4.3.70.0000.01715.66
4.3.60.0000.01715.66
4.3.50.0030.01315.66
4.3.40.0000.02615.66
4.3.30.0070.01715.66
4.3.20.0000.01715.66
4.3.10.0000.02015.66
4.3.00.0000.01815.66

preferences:
44.48 ms | 400 KiB | 5 Q