3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = "Şef"; for ($x = 0; $x < 100000; ++$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)
8.3.60.0360.03918.18
8.3.50.0270.04321.92
8.3.40.0300.04718.44
8.3.30.0140.05118.59
8.3.20.0160.01318.64
8.3.10.0220.01621.09
8.3.00.0100.02721.90
8.2.180.0300.04716.50
8.2.170.0360.03622.96
8.2.160.0230.03920.46
8.2.150.0100.03324.18
8.2.140.0220.01324.66
8.2.130.0160.02526.16
8.2.120.0190.02221.00
8.2.110.0170.02622.27
8.2.100.0200.02317.72
8.2.90.0100.02317.50
8.2.80.0100.01717.97
8.2.70.0070.02317.93
8.2.60.0000.02818.22
8.2.50.0070.02518.10
8.2.40.0030.03122.13
8.2.30.0070.01719.34
8.2.20.0000.02617.68
8.2.10.0030.02717.59
8.2.00.0070.03117.77
8.1.280.0360.04225.92
8.1.270.0200.01323.99
8.1.260.0160.04226.35
8.1.250.0250.01628.09
8.1.240.0130.02722.50
8.1.230.0120.02517.83
8.1.220.0040.02917.74
8.1.210.0040.02218.77
8.1.200.0070.02017.35
8.1.190.0070.02417.23
8.1.180.0100.02118.10
8.1.170.0100.02218.59
8.1.160.0000.03118.88
8.1.150.0150.00918.77
8.1.140.0030.03017.52
8.1.130.0000.02417.98
8.1.120.0070.02417.54
8.1.110.0040.02517.50
8.1.100.0070.01817.52
8.1.90.0060.01917.42
8.1.80.0060.01917.48
8.1.70.0070.02317.53
8.1.60.0110.02217.54
8.1.50.0000.02417.55
8.1.40.0140.01417.52
8.1.30.0000.02617.71
8.1.20.0070.02417.69
8.1.10.0040.02517.48
8.1.00.0070.02017.52
8.0.300.0060.02618.77
8.0.290.0100.01416.58
8.0.280.0080.02118.45
8.0.270.0130.01017.20
8.0.260.0030.02116.68
8.0.250.0040.02816.94
8.0.240.0090.02816.91
8.0.230.0100.01916.81
8.0.220.0110.01816.86
8.0.210.0100.01716.76
8.0.200.0130.01316.89
8.0.190.0000.02516.96
8.0.180.0070.02316.82
8.0.170.0060.02316.91
8.0.160.0030.02416.74
8.0.150.0120.01616.77
8.0.140.0040.02216.84
8.0.130.0030.00313.32
8.0.120.0150.01816.96
8.0.110.0070.02516.90
8.0.100.0110.02117.03
8.0.90.0110.02116.96
8.0.80.0240.05816.89
8.0.70.0040.02416.77
8.0.60.0130.02016.83
8.0.50.0000.02816.96
8.0.30.0280.10017.09
8.0.20.0420.08517.40
8.0.10.0060.02216.82
8.0.00.0480.07516.96
7.4.330.0000.00516.78
7.4.320.0070.01716.41
7.4.300.0000.02916.24
7.4.290.0030.02416.37
7.4.280.0000.02516.35
7.4.270.0030.02816.43
7.4.260.0030.00313.29
7.4.250.0030.03116.45
7.4.240.0030.02716.39
7.4.230.0070.02716.46
7.4.220.0130.09116.50
7.4.210.0280.06316.50
7.4.200.0040.02916.30
7.4.190.0140.02116.52
7.4.160.0370.07616.49
7.4.150.0610.08217.40
7.4.140.0440.08317.86
7.4.130.0430.08716.53
7.4.120.0580.08516.54
7.4.110.0240.09916.75
7.4.100.0640.06216.56
7.4.90.0430.09916.53
7.4.80.0200.08219.39
7.4.70.0340.08216.51
7.4.60.0200.08016.59
7.4.50.0030.02816.21
7.4.40.0200.02022.77
7.4.30.0260.08316.47
7.3.330.0000.00513.08
7.3.320.0000.00513.16
7.3.310.0070.03016.35
7.3.300.0030.02816.25
7.3.290.0200.05616.42
7.3.280.0180.06116.31
7.3.270.0600.09117.40
7.3.260.0380.10118.24
7.3.250.0360.08016.45
7.3.240.0480.07516.48
7.3.230.0510.07816.39
7.3.210.0540.06516.65
7.3.200.0340.05919.39
7.3.190.0340.10316.57
7.3.180.0230.08516.40
7.3.170.0230.07316.61
7.3.160.0280.08416.51
7.2.330.0420.09116.43
7.2.320.0250.07016.67
7.2.310.0160.07816.64
7.2.300.0300.09116.80
7.2.290.0240.07816.79
5.4.220.0200.05719.21
5.4.210.0170.07019.00
5.4.200.0230.05719.11
5.4.190.0200.10719.16
5.4.180.0200.06319.21
5.4.170.0300.09318.89
5.4.160.0170.07019.09
5.4.150.0200.05718.95
5.4.140.0300.06716.66
5.4.130.0270.06716.27
5.4.120.0100.08016.40
5.4.110.0170.07716.57
5.4.100.0130.08016.61
5.4.90.0270.07016.54
5.4.80.0200.07316.18
5.4.70.0230.07016.50
5.4.60.0230.06716.57
5.4.50.0430.08716.33
5.4.40.0370.08716.15
5.4.30.0470.05016.27
5.4.20.0200.06016.32
5.4.10.0300.08716.53
5.4.00.0230.08315.89
5.3.270.0370.06314.48
5.3.260.0270.09014.55
5.3.250.0400.08014.53
5.3.240.0200.06014.55
5.3.230.0400.06014.55
5.3.220.0270.07714.43
5.3.210.0470.06014.62
5.3.200.0230.06014.54
5.3.190.0270.05314.51
5.3.180.0270.06314.50
5.3.170.0170.09014.39
5.3.160.0270.11014.50
5.3.150.0270.05314.48
5.3.140.0230.10314.39
5.3.130.0370.07314.44
5.3.120.0200.08314.49
5.3.110.0300.05014.39
5.3.100.0200.09314.01
5.3.90.0300.07013.80
5.3.80.0270.09313.88
5.3.70.0270.08013.89
5.3.60.0430.08313.78
5.3.50.0430.07713.83
5.3.40.0230.09013.82
5.3.30.0370.08313.67
5.3.20.0200.06313.57
5.3.10.0430.05713.65
5.3.00.0400.08013.51

preferences:
49.58 ms | 401 KiB | 5 Q