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)
8.3.40.0100.01319.01
8.3.30.0100.00719.09
8.3.20.0190.00320.12
8.3.10.0040.00421.78
8.3.00.0060.00320.89
8.2.170.0140.00322.96
8.2.160.0060.01522.21
8.2.150.0070.01024.18
8.2.140.0030.00624.66
8.2.130.0130.00326.16
8.2.120.0030.00718.34
8.2.110.0060.00622.40
8.2.100.0030.01017.88
8.2.90.0040.00419.38
8.2.80.0060.00317.97
8.2.70.0030.00617.75
8.2.60.0000.00918.05
8.2.50.0060.00618.07
8.2.40.0030.00618.28
8.2.30.0030.01018.22
8.2.20.0030.00617.80
8.2.10.0060.00318.14
8.2.00.0030.00617.92
8.1.270.0110.00720.85
8.1.260.0060.00326.35
8.1.250.0130.01028.09
8.1.240.0030.00724.10
8.1.230.0070.00619.21
8.1.220.0070.00317.90
8.1.210.0030.00618.77
8.1.200.0060.00617.48
8.1.190.0090.00017.25
8.1.180.0060.00318.10
8.1.170.0030.00618.96
8.1.160.0030.00622.19
8.1.150.0030.00718.98
8.1.140.0000.00919.46
8.1.130.0040.00417.88
8.1.120.0040.00417.63
8.1.110.0000.01017.61
8.1.100.0040.00417.50
8.1.90.0030.00617.52
8.1.80.0000.00917.50
8.1.70.0000.00917.54
8.1.60.0040.00717.65
8.1.50.0000.01017.70
8.1.40.0000.00917.61
8.1.30.0050.00517.81
8.1.20.0000.00917.71
8.1.10.0060.00317.72
8.1.00.0060.00917.66
8.0.300.0000.00818.77
8.0.290.0040.00416.75
8.0.280.0030.00518.49
8.0.270.0060.00317.34
8.0.260.0030.00617.43
8.0.250.0030.00617.18
8.0.240.0030.00617.18
8.0.230.0030.00517.12
8.0.220.0000.00817.09
8.0.210.0060.00317.02
8.0.200.0040.00417.09
8.0.190.0000.00917.14
8.0.180.0030.00616.98
8.0.170.0000.01116.95
8.0.160.0000.00917.08
8.0.150.0000.00917.05
8.0.140.0090.00017.02
8.0.130.0000.00813.50
8.0.120.0000.01016.99
8.0.110.0090.00017.08
8.0.100.0060.00316.97
8.0.90.0090.00016.96
8.0.80.0070.01017.09
8.0.70.0060.00316.92
8.0.60.0060.00316.95
8.0.50.0060.00317.13
8.0.30.0140.01217.16
8.0.20.0160.01217.42
8.0.10.0060.00317.09
8.0.00.0120.01516.93
7.4.330.0030.00315.09
7.4.320.0080.00016.71
7.4.300.0060.00316.62
7.4.290.0000.01116.58
7.4.280.0060.00316.53
7.4.270.0030.00616.52
7.4.260.0090.00016.71
7.4.250.0000.00916.69
7.4.240.0060.00316.70
7.4.230.0030.00616.61
7.4.220.0120.01316.52
7.4.210.0090.01916.66
7.4.200.0030.00616.55
7.4.160.0130.01016.57
7.4.150.0160.01017.40
7.4.140.0060.01717.86
7.4.130.0160.01016.49
7.4.120.0180.00716.57
7.4.110.0150.01816.57
7.4.100.0180.01116.36
7.4.90.0120.02016.76
7.4.80.0100.01416.62
7.4.70.0090.01216.68
7.4.60.0140.00716.44
7.4.50.0030.00616.91
7.4.40.0030.02016.65
7.4.30.0180.01216.67
7.4.10.0070.01716.63
7.4.00.0080.01215.66
7.3.330.0040.00413.48
7.3.320.0200.00013.34
7.3.310.0030.00616.66
7.3.300.0060.00316.59
7.3.290.0080.01516.53
7.3.280.0060.01316.59
7.3.270.0280.00717.40
7.3.260.0190.00616.62
7.3.250.0180.01016.57
7.3.240.0220.00516.76
7.3.230.0170.00616.41
7.3.210.0120.01216.54
7.3.200.0070.02019.39
7.3.190.0030.02016.47
7.3.180.0120.01216.65
7.3.170.0110.01716.48
7.3.160.0150.00916.61
7.3.130.0070.01816.58
7.3.120.0140.00915.76
7.3.110.0110.00615.63
7.3.100.0120.00815.80
7.3.90.0070.00815.69
7.3.80.0050.00915.67
7.3.70.0020.01715.78
7.3.60.0020.01715.71
7.3.50.0050.01315.74
7.3.40.0030.01415.71
7.3.30.0090.00715.82
7.3.20.0030.01317.30
7.3.10.0070.01017.23
7.3.00.0100.00917.24
7.2.330.0170.04316.78
7.2.320.0260.03316.67
7.2.310.0410.06716.72
7.2.300.0130.03716.70
7.2.290.0170.04716.84
7.2.260.0100.05916.95
7.2.250.0100.04615.60
7.2.240.0080.05116.03
7.2.230.0050.04816.00
7.2.220.0030.04916.10
7.2.210.0080.04215.90
7.2.200.0070.04016.01
7.2.190.0100.03816.03
7.2.180.0020.04616.00
7.2.170.0090.04715.88
7.2.160.0060.04516.69
7.2.150.0100.03518.51
7.2.140.0100.03818.57
7.2.130.0100.04417.49
7.2.120.0120.04017.34
7.2.110.0140.04117.67
7.2.100.0140.04217.39
7.2.90.0130.04817.76
7.2.80.0170.04117.72
7.2.70.0140.04617.53
7.2.60.0080.03717.40
7.2.50.0040.04517.31
7.2.40.0090.04617.49
7.2.30.0130.04717.52
7.2.20.0100.05217.46
7.2.10.0050.05017.55
7.2.00.0140.04318.27
7.1.330.0050.05716.86
7.1.320.0080.05416.79
7.1.310.0030.05216.49
7.1.300.0110.04816.72
7.1.290.0070.05316.74
7.1.280.0070.06316.66
7.1.270.0110.04616.72
7.1.260.0070.04816.62
7.1.250.0140.05316.45
7.1.240.0000.06017.32
7.1.230.0090.04417.57
7.1.220.0070.06017.30
7.1.210.0060.05217.15
7.1.200.0100.03816.62
7.1.190.0000.06317.43
7.1.180.0070.05117.62
7.1.170.0100.05517.37
7.1.160.0100.04617.36
7.1.150.0000.05917.32
7.1.140.0070.06917.39
7.1.130.0060.05217.33
7.1.120.0200.04617.46
7.1.110.0070.06717.62
7.1.100.0050.03917.78
7.1.90.0130.04217.29
7.1.80.0100.04817.36
7.1.70.0030.05317.31
7.1.60.0100.05018.51
7.1.50.0070.05317.02
7.1.40.0130.06617.46
7.1.30.0030.06317.46
7.1.20.0100.05117.45
7.1.10.0100.06017.49
7.1.00.0070.07919.85
7.0.330.0030.04717.00
7.0.320.0000.05517.08
7.0.310.0030.06317.34
7.0.300.0000.06617.17
7.0.290.0030.07217.14
7.0.280.0140.04517.22
7.0.270.0100.06817.28
7.0.260.0030.06317.22
7.0.250.0130.05117.13
7.0.240.0070.05117.04
7.0.230.0100.04717.26
7.0.220.0100.05217.21
7.0.210.0030.05217.32
7.0.200.0080.03416.14
7.0.190.0030.05317.21
7.0.180.0100.06917.12
7.0.170.0100.06817.15
7.0.160.0100.05317.05
7.0.150.0030.05017.22
7.0.140.0020.06119.56
7.0.130.0030.05117.34
7.0.120.0130.04917.29
7.0.110.0100.05917.29
7.0.100.0070.04617.12
7.0.90.0060.05117.17
7.0.80.0170.06017.12
7.0.70.0060.05217.15
7.0.60.0070.07818.57
7.0.50.0030.08017.55
7.0.40.0080.08417.55
7.0.30.0220.05317.57
7.0.20.0230.07317.56
7.0.10.0050.06717.72
7.0.00.0050.07117.65
5.6.400.0030.05016.21
5.6.390.0030.05216.33
5.6.380.0030.05415.88
5.6.370.0060.04315.87
5.6.360.0030.04715.88
5.6.350.0060.05115.91
5.6.340.0030.05416.13
5.6.330.0070.04715.90
5.6.320.0100.04116.23
5.6.310.0030.05116.10
5.6.300.0100.05916.00
5.6.290.0030.06115.98
5.6.280.0070.07618.58
5.6.270.0100.04915.95
5.6.260.0030.05316.03
5.6.250.0100.04016.07
5.6.240.0030.04615.96
5.6.230.0100.06315.97
5.6.220.0100.04216.06
5.6.210.0050.07318.16
5.6.200.0100.04817.11
5.6.190.0120.08018.38
5.6.180.0220.05218.33
5.6.170.0180.05918.27
5.6.160.0050.06018.23
5.6.150.0080.07717.02
5.6.140.0050.08317.07
5.6.130.0100.08316.96
5.6.120.0130.06318.49
5.6.110.0150.06618.53
5.6.100.0050.06318.44
5.6.90.0070.07918.67
5.6.80.0070.07818.12
5.6.70.0000.04816.13
5.6.60.0030.05515.99
5.6.50.0030.05415.70
5.6.40.0000.06315.76
5.6.30.0130.04616.27
5.6.20.0100.04615.80
5.6.10.0070.06015.79
5.6.00.0100.05116.24
5.5.380.0000.05316.04
5.5.370.0100.04015.97
5.5.360.0070.04515.90
5.5.350.0170.05318.14
5.5.340.0050.06016.87
5.5.330.0100.07918.03
5.5.320.0070.05518.04
5.5.310.0180.07418.12
5.5.300.0070.05916.98
5.5.290.0100.06316.84
5.5.280.0100.07518.36
5.5.270.0070.06918.41
5.5.260.0070.06518.31
5.5.250.0080.06618.29
5.5.240.0150.06118.13
5.5.230.0030.05316.00
5.5.220.0130.03515.79
5.5.210.0070.05416.00
5.5.200.0030.05215.78
5.5.190.0070.05916.01
5.5.180.0070.05915.97
5.5.170.0070.04315.96
5.5.160.0070.05415.96
5.5.150.0060.04215.92
5.5.140.0100.04015.78
5.5.130.0070.04816.04
5.5.120.0100.04715.62
5.5.110.0030.05415.71
5.5.100.0030.05715.92
5.5.90.0140.05115.76
5.5.80.0000.06716.01
5.5.70.0070.06615.86
5.5.60.0070.05415.70
5.5.50.0030.05915.67
5.5.40.0000.05815.95
5.5.30.0030.04516.02
5.5.20.0130.03815.93
5.5.10.0070.05315.77
5.5.00.0030.04615.96
5.4.450.0380.06516.23
5.4.440.0450.07016.16
5.4.430.0530.06616.12
5.4.420.0480.07416.19
5.4.410.0570.08216.11
5.4.400.0700.06616.07
5.4.390.0170.06515.65
5.4.380.0120.07215.75
5.4.370.0170.06915.71
5.4.360.0100.07515.63
5.4.350.0170.09615.70
5.4.340.0100.09815.72
5.4.330.0070.04712.79
5.4.320.0150.08715.59
5.4.310.0180.07215.70
5.4.300.0120.08115.65
5.4.290.0150.09615.75
5.4.280.0200.08815.66
5.4.270.0150.09215.71
5.4.260.0130.08915.56
5.4.250.0130.09215.53
5.4.240.0180.08015.67
5.4.230.0170.08115.80
5.4.220.0150.06915.66
5.4.210.0080.08415.51
5.4.200.0150.06714.60
5.4.190.0180.08215.71
5.4.180.0120.07115.77
5.4.170.0120.07415.75
5.4.160.0130.09415.64
5.4.150.0200.07815.70
5.4.140.0120.09214.50
5.4.130.0180.09014.57
5.4.120.0120.09614.49
5.4.110.0230.08914.59
5.4.100.0120.07814.47
5.4.90.0200.06814.34
5.4.80.0220.09014.41
5.4.70.0080.10414.55
5.4.60.0180.08614.40
5.4.50.0150.09214.35
5.4.40.0170.07614.39
5.4.30.0150.08814.51
5.4.20.0150.09814.53
5.4.10.0080.08214.52
5.4.00.0170.06814.18
5.3.290.0200.08314.64
5.3.280.0100.10314.60
5.3.270.0200.09014.54
5.3.260.0130.10014.51
5.3.250.0100.09714.50
5.3.240.0270.08314.50
5.3.230.0200.09314.58
5.3.220.0230.10314.52
5.3.210.0170.10314.55
5.3.200.0200.09714.57
5.3.190.0270.15014.66
5.3.180.0400.14714.47
5.3.170.0270.10714.63
5.3.160.0270.14314.63
5.3.150.0230.14314.59
5.3.140.0230.09714.59
5.3.130.0130.11314.54
5.3.120.0270.15014.54
5.3.110.0200.11714.64
5.3.100.0300.10314.01
5.3.90.0270.09714.07
5.3.80.0200.10013.99
5.3.70.0100.13313.95
5.3.60.0170.10714.09
5.3.50.0070.11313.86
5.3.40.0470.07314.04
5.3.30.0200.08713.85
5.3.20.0170.11013.63
5.3.10.0100.10313.60
5.3.00.0270.11013.60
5.2.170.0200.08711.18
5.2.160.0270.08711.20
5.2.150.0170.07311.18
5.2.140.0200.07311.20
5.2.130.0270.07311.05
5.2.120.0200.06311.05
5.2.110.0170.07311.16
5.2.100.0170.08011.08
5.2.90.0200.10311.02
5.2.80.0200.09311.14
5.2.70.0200.07711.08
5.2.60.0230.11311.01
5.2.50.0200.07711.00
5.2.40.0130.07311.05
5.2.30.0230.08710.93
5.2.20.0100.07310.96
5.2.10.0070.07710.83
5.2.00.0330.08710.76
5.1.60.0130.07710.03
5.1.50.0070.09010.16
5.1.40.0000.08710.03
5.1.30.0130.08010.42
5.1.20.0100.09310.47
5.1.10.0070.07310.14
5.1.00.0130.07010.22
5.0.50.0130.0738.59
5.0.40.0100.0678.52
5.0.30.0070.0838.25
5.0.20.0100.0678.41
5.0.10.0170.0708.30
5.0.00.0030.0878.28
4.4.90.0100.0605.93
4.4.80.0170.0505.94
4.4.70.0130.0835.93
4.4.60.0100.0575.93
4.4.50.0070.0606.00
4.4.40.0200.0675.94
4.4.30.0070.0575.96
4.4.20.0200.0775.95
4.4.10.0200.0606.02
4.4.00.0130.0675.99
4.3.110.0100.0535.92
4.3.100.0000.0575.91
4.3.90.0770.0675.89
4.3.80.0430.1035.86
4.3.70.0270.0575.88
4.3.60.0200.0675.84
4.3.50.0270.0735.84
4.3.40.0330.0835.89
4.3.30.0170.0734.65
4.3.20.0200.0604.60
4.3.10.0170.0574.70
4.3.00.0230.04714.42

preferences:
54.42 ms | 400 KiB | 5 Q