3v4l.org

run code in 300+ PHP versions simultaneously
<?php $s = 'Odpuštěno'; $s = mb_strtolower($s, 'utf8'); $ln = mb_strlen($s, 'utf8'); $i = 0; do { $b = decbin($i); $p = strrev(str_pad((string) $b, $ln, '0', STR_PAD_LEFT)); $r = ''; for ($j = 0; $j < strlen($p); $j++) { $ch = mb_substr($s, $j, 1, 'utf8'); $r .= $p[$j] ? mb_strtoupper($ch, 'utf8') : $ch; } echo $r . ' '; if ($p === str_repeat('1', $ln)) { break; } $i++; } while (true);

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)
8.3.60.0060.01216.88
8.3.50.0210.00318.17
8.3.40.0080.01618.98
8.3.30.0100.01019.12
8.3.20.0090.00020.39
8.3.10.0060.00321.87
8.3.00.0000.00920.96
8.2.180.0070.01417.00
8.2.170.0030.01322.96
8.2.160.0090.01222.39
8.2.150.0140.00324.18
8.2.140.0000.00924.66
8.2.130.0000.00926.16
8.2.120.0030.00620.02
8.2.110.0110.00022.41
8.2.100.0110.00418.00
8.2.90.0030.00619.30
8.2.80.0040.00717.97
8.2.70.0070.00317.88
8.2.60.0060.00318.18
8.2.50.0070.00318.07
8.2.40.0000.00918.41
8.2.30.0000.01018.33
8.2.20.0030.00617.87
8.2.10.0030.00618.11
8.2.00.0000.01017.93
8.1.280.0070.01325.92
8.1.270.0090.00020.76
8.1.260.0030.00626.35
8.1.250.0050.00528.09
8.1.240.0190.00624.04
8.1.230.0030.01019.34
8.1.220.0080.00317.89
8.1.210.0050.00518.77
8.1.200.0070.00717.38
8.1.190.0060.00317.63
8.1.180.0060.00318.10
8.1.170.0000.00918.81
8.1.160.0000.00822.01
8.1.150.0030.00618.98
8.1.140.0090.00019.43
8.1.130.0000.00818.00
8.1.120.0050.00517.46
8.1.110.0000.00917.45
8.1.100.0060.00317.64
8.1.90.0090.00017.43
8.1.80.0030.00617.60
8.1.70.0000.00917.58
8.1.60.0070.00317.76
8.1.50.0030.00717.71
8.1.40.0030.00717.70
8.1.30.0030.00617.72
8.1.20.0060.00317.81
8.1.10.0000.01017.75
8.1.00.0060.00917.72
8.0.300.0000.00818.77
8.0.290.0070.00317.00
8.0.280.0030.00518.53
8.0.270.0040.00417.28
8.0.260.0040.00817.37
8.0.250.0000.00917.15
8.0.240.0030.00517.02
8.0.230.0040.00417.00
8.0.220.0060.00317.06
8.0.210.0040.00416.99
8.0.200.0000.00917.12
8.0.190.0050.00517.07
8.0.180.0030.00617.10
8.0.170.0030.00716.93
8.0.160.0060.00317.05
8.0.150.0030.00617.00
8.0.140.0000.00917.04
8.0.130.0040.00413.47
8.0.120.0030.00717.01
8.0.110.0000.00917.02
8.0.100.0030.00616.85
8.0.90.0040.00417.11
8.0.80.0030.01517.10
8.0.70.0030.00616.88
8.0.60.0030.00617.10
8.0.50.0000.00917.03
8.0.30.0100.01917.20
8.0.20.0190.01117.41
8.0.10.0100.00017.04
8.0.00.0210.00717.00
7.4.330.0000.00715.14
7.4.320.0040.00416.71
7.4.300.0030.00616.52
7.4.290.0090.00016.61
7.4.280.0030.00616.63
7.4.270.0030.00716.61
7.4.260.0050.00516.53
7.4.250.0040.00716.61
7.4.240.0060.00316.76
7.4.230.0000.00916.82
7.4.220.0030.02016.59
7.4.210.0030.01616.72
7.4.200.0060.00316.49
7.4.160.0140.01116.66
7.4.150.0220.00317.40
7.4.140.0210.01117.86
7.4.130.0120.01516.55
7.4.120.0100.01516.65
7.4.110.0080.02016.77
7.4.100.0150.00916.68
7.4.90.0100.01316.61
7.4.80.0120.02316.72
7.4.70.0130.01316.49
7.4.60.0090.01216.66
7.4.50.0030.00316.60
7.4.40.0070.01316.60
7.4.30.0160.01316.56
7.4.00.0120.00815.22
7.3.330.0030.00313.45
7.3.320.0180.00413.56
7.3.310.0000.00916.61
7.3.300.0000.00816.53
7.3.290.0070.01116.54
7.3.280.0110.01316.60
7.3.270.0090.02017.40
7.3.260.0150.00916.61
7.3.250.0100.01416.55
7.3.240.0180.00916.70
7.3.230.0130.01616.47
7.3.210.0130.01216.52
7.3.200.0100.01319.39
7.3.190.0030.01916.70
7.3.180.0110.01116.55
7.3.170.0120.01216.32
7.3.160.0210.01516.39
7.2.330.0220.05116.93
7.2.320.0160.06216.84
7.2.310.0370.04816.86
7.2.300.0190.04416.77
7.2.290.0250.06316.73
7.2.60.0130.03016.48
7.2.00.0140.03019.48
7.1.200.0030.02015.93
7.1.100.0220.03018.39
7.1.70.0070.01717.34
7.1.60.0070.02217.54
7.1.50.0130.04816.95
7.1.00.0070.10022.40
7.0.200.0060.01916.90
7.0.140.0030.07322.13
7.0.60.0000.09019.94
7.0.50.0230.07717.89
7.0.40.0100.10320.06
7.0.30.0200.05320.21
7.0.20.0330.09320.17
7.0.10.0070.05720.16
7.0.00.0030.11320.16
5.6.280.0130.09720.87
5.6.210.0170.07720.54
5.6.200.0100.07318.21
5.6.190.0030.07320.60
5.6.180.0530.09720.49
5.6.170.0400.08720.38
5.6.160.0030.11020.40
5.6.150.0170.07018.16
5.6.140.0070.06318.18
5.6.130.0070.11018.18
5.6.120.0100.08721.14
5.6.110.0070.10321.00
5.6.100.0030.08720.97
5.6.90.0170.05720.96
5.6.80.0070.10720.51
5.5.350.0330.09720.46
5.5.340.0070.05718.01
5.5.330.0000.07720.40
5.5.320.0070.05720.21
5.5.310.0300.10320.18
5.5.300.0170.10317.98
5.5.290.0100.08017.95
5.5.280.0130.08020.96
5.5.270.0170.10320.78
5.5.260.0100.08020.86
5.5.250.0070.10720.49
5.5.240.0200.08720.34
5.4.450.0800.11319.32
5.4.440.0670.10319.57
5.4.430.0870.09719.45
5.4.420.0930.10319.44
5.4.410.0800.09019.02
5.4.400.1030.11019.32
5.4.390.0230.09018.66
5.4.380.0170.09718.61
5.4.370.0170.10318.64
5.4.360.0270.09718.73
5.4.350.0270.09018.68
5.4.340.0270.07718.66
5.4.320.0270.09018.55
5.4.310.0230.09318.62
5.4.300.0300.09018.64
5.4.290.0230.09018.65
5.4.280.0270.08018.71
5.4.270.0200.09718.45
5.4.260.0270.10718.47
5.4.250.0270.09018.77
5.4.240.0270.08718.56
5.4.230.0270.08718.68
5.4.220.0170.10318.72
5.4.210.0270.13318.70
5.4.200.0230.11016.41
5.4.190.0200.10718.59
5.4.180.0430.13018.68
5.4.170.0200.09718.65
5.4.160.0230.08318.54
5.4.150.0170.09018.60
5.4.140.0270.11716.31
5.4.130.0130.09316.09
5.4.120.0230.10016.12
5.4.110.0300.09316.04
5.4.100.0130.09316.14
5.4.90.0170.09316.19
5.4.80.0170.09716.20
5.4.70.0070.10016.20
5.4.60.0430.09716.12
5.4.50.0300.14316.33
5.4.40.0130.10316.15
5.4.30.0200.09016.05
5.4.20.0330.10316.27
5.4.10.0100.10716.18
5.4.00.0130.08315.67
5.3.290.0170.09314.66
5.3.280.0070.09314.52
5.3.270.0170.09314.63
5.3.260.0100.09314.57
5.3.250.0100.12314.66
5.3.240.0130.09014.68
5.3.230.0330.07714.58
5.3.220.0170.09314.60
5.3.210.0170.08714.65
5.3.200.0270.07714.59
5.3.190.0170.11314.56
5.3.180.0070.09314.47
5.3.170.0170.09314.49
5.3.160.0100.09714.51
5.3.150.0130.09014.66
5.3.140.0100.09314.53
5.3.130.0170.09314.52
5.3.120.0130.10014.44
5.3.110.0300.07314.53
5.3.100.0270.09714.06
5.3.90.0230.09314.01
5.3.80.0300.09013.96
5.3.70.0300.13014.05
5.3.60.0100.09713.93
5.3.50.0200.08013.90
5.3.40.0130.08713.86
5.3.30.0170.09013.89
5.3.20.0230.07713.59
5.3.10.0200.08013.63
5.3.00.0230.08713.67
5.2.170.0070.08711.18
5.2.160.0130.08711.20
5.2.150.0200.06311.12
5.2.140.0170.07011.11
5.2.130.0170.07311.07
5.2.120.0070.09311.02
5.2.110.0200.06711.15
5.2.100.0130.07011.23
5.2.90.0130.08011.04
5.2.80.0270.06011.03
5.2.70.0130.08711.05
5.2.60.0130.07311.03
5.2.50.0200.07710.93
5.2.40.0200.07010.96
5.2.30.0230.07010.98
5.2.20.0170.09310.91
5.2.10.0100.08310.88
5.2.00.0200.06710.69
5.1.60.0200.08710.14
5.1.50.0030.07710.05
5.1.40.0270.0679.97
5.1.30.0100.08310.46
5.1.20.0200.06310.44
5.1.10.0170.08010.23
5.1.00.0170.08010.21
5.0.50.0130.0778.57
5.0.40.0030.0708.43
5.0.30.0170.0838.39
5.0.20.0200.0578.31
5.0.10.0170.0608.35
5.0.00.0170.0708.36
4.4.90.0070.0575.91
4.4.80.0170.0635.91
4.4.70.0130.0635.89
4.4.60.0200.0835.92
4.4.50.0200.0775.94
4.4.40.0270.1105.86
4.4.30.0170.0975.86
4.4.20.0170.0575.97
4.4.10.0000.0636.07
4.4.00.0070.0776.00
4.3.110.0130.0605.91
4.3.100.0100.0505.89
4.3.90.0030.0735.87
4.3.80.0130.0935.90
4.3.70.0030.0635.89
4.3.60.0130.0575.86
4.3.50.0070.0635.93
4.3.40.0130.0705.95
4.3.30.0070.0604.61
4.3.20.0030.0804.66
4.3.10.0030.0574.56
4.3.00.0200.03314.42

preferences:
48.72 ms | 400 KiB | 5 Q