3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = "Şef"; for ($x = 0; $x < 10000; ++$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)
8.3.60.0200.04616.50
8.3.50.0350.03917.28
8.3.40.0290.04918.71
8.3.30.0270.04318.71
8.3.20.0100.03018.64
8.3.10.0170.02018.77
8.3.00.0230.02019.26
8.2.180.0170.04417.91
8.2.170.0330.04022.96
8.2.160.0140.06521.05
8.2.150.0270.01724.18
8.2.140.0270.02424.66
8.2.130.0100.02726.16
8.2.120.0190.02221.13
8.2.110.0300.01322.30
8.2.100.0190.02218.16
8.2.90.0090.01919.11
8.2.80.0100.02017.97
8.2.70.0140.01717.63
8.2.60.0140.01418.04
8.2.50.0000.03218.10
8.2.40.0030.02818.34
8.2.30.0110.02318.14
8.2.20.0100.02017.80
8.2.10.0030.02917.63
8.2.00.0170.02017.59
8.1.280.0300.03025.92
8.1.270.0200.02324.66
8.1.260.0130.02926.35
8.1.250.0170.02028.09
8.1.240.0210.02422.14
8.1.230.0200.02317.64
8.1.220.0170.01417.80
8.1.210.0060.02518.77
8.1.200.0070.02417.22
8.1.190.0060.01917.23
8.1.180.0070.01818.10
8.1.170.0100.02318.65
8.1.160.0060.02318.84
8.1.150.0110.01818.75
8.1.140.0000.02717.53
8.1.130.0100.02017.87
8.1.120.0100.02017.55
8.1.110.0100.02317.52
8.1.100.0070.01717.54
8.1.90.0000.03017.56
8.1.80.0040.02117.43
8.1.70.0070.02117.42
8.1.60.0060.02217.69
8.1.50.0000.02717.52
8.1.40.0070.02717.55
8.1.30.0030.02717.57
8.1.20.0030.02117.69
8.1.10.0070.01717.63
8.1.00.0070.02017.41
8.0.300.0070.01718.77
8.0.290.0070.02116.63
8.0.280.0060.02318.35
8.0.270.0030.02017.13
8.0.260.0000.02316.82
8.0.250.0160.02016.79
8.0.240.0060.02216.83
8.0.230.0140.01416.79
8.0.220.0040.02116.66
8.0.210.0030.02016.88
8.0.200.0040.02116.79
8.0.190.0070.02716.77
8.0.180.0110.01816.92
8.0.170.0030.02816.67
8.0.160.0100.01716.95
8.0.150.0100.02416.76
8.0.140.0030.02316.73
8.0.130.0030.00313.29
8.0.120.0060.02216.87
8.0.110.0030.02816.82
8.0.100.0030.02316.76
8.0.90.0100.02616.98
8.0.80.0480.07716.93
8.0.70.0070.02616.91
8.0.60.0030.02916.95
8.0.50.0000.03216.86
8.0.30.0200.10417.36
8.0.20.0430.10817.14
8.0.10.0030.02416.89
8.0.00.0440.08816.64
7.4.330.0020.00212.87
7.4.320.0160.00716.24
7.4.300.0030.03116.44
7.4.290.0030.02416.32
7.4.280.0030.02816.31
7.4.270.0130.01616.33
7.4.260.0060.00013.27
7.4.250.0160.02316.59
7.4.240.0060.02816.51
7.4.230.0070.02716.45
7.4.220.0400.12416.61
7.4.210.0070.07216.52
7.4.200.0100.01916.36
7.4.190.0040.02216.62
7.4.160.0170.10316.69
7.4.150.0340.10316.73
7.4.140.0490.06816.52
7.4.130.0410.10516.58
7.4.120.0570.08516.48
7.4.110.0450.08716.54
7.4.100.0560.13416.61
7.4.90.0350.08916.46
7.4.80.0200.07519.39
7.4.70.0320.07416.45
7.4.60.0320.06116.46
7.4.50.0260.06716.42
7.4.40.0030.04016.26
7.4.30.0300.06716.54
7.3.330.0000.00613.14
7.3.320.0060.00013.08
7.3.310.0000.02716.35
7.3.300.0000.02516.20
7.3.290.0200.07116.41
7.3.280.0180.08316.31
7.3.270.0570.07416.53
7.3.260.0360.05916.26
7.3.250.0510.07716.60
7.3.240.0330.09116.20
7.3.230.0310.06716.45
7.3.210.0290.09416.35
7.3.200.0210.07916.54
7.3.190.0330.09616.22
7.3.180.0170.07616.52
7.3.170.0290.07016.36
7.3.160.0350.05916.23
7.2.330.0520.09616.79
7.2.320.0280.06916.95
7.2.310.0270.07616.52
7.2.300.0070.06316.73
7.2.290.0290.06516.53
5.4.220.1770.05719.11
5.4.210.1800.06019.15
5.4.200.0570.05719.14
5.4.190.0100.07018.96
5.4.180.0170.06719.14
5.4.170.1430.05719.00
5.4.160.2100.07018.88
5.4.150.1870.06018.84
5.4.140.1900.05316.58
5.4.130.0570.07016.66
5.4.120.0070.05316.42
5.4.110.0130.06716.54
5.4.100.0430.06016.17
5.4.90.0900.07016.51
5.4.80.0100.10716.50
5.4.70.0070.06016.50
5.4.60.0030.06016.27
5.4.50.2070.05316.17
5.4.40.1900.06316.25
5.4.30.2070.04716.51
5.4.20.2100.05716.14
5.4.10.2000.05716.49
5.4.00.1900.05315.86
5.3.270.1970.04314.45
5.3.260.0100.05714.54
5.3.250.0230.06714.44
5.3.240.0830.06014.48
5.3.230.1870.06714.44
5.3.220.1970.05714.43
5.3.210.2370.06714.43
5.3.200.2100.06014.50
5.3.190.1970.05714.52
5.3.180.1870.05014.50
5.3.170.2070.05014.42
5.3.160.1970.05314.43
5.3.150.0600.05314.40
5.3.140.0100.05314.50
5.3.130.0100.05314.39
5.3.120.1630.05014.41
5.3.110.2130.06714.49
5.3.100.2070.04713.97
5.3.90.2000.05713.93
5.3.80.1930.05013.89
5.3.70.1630.06713.89
5.3.60.1930.05013.80
5.3.50.1900.06013.72
5.3.40.1870.06313.82
5.3.30.1300.06013.77
5.3.20.0270.08013.47
5.3.10.0100.05713.45
5.3.00.1070.04713.52

preferences:
46.69 ms | 401 KiB | 5 Q