3v4l.org

run code in 300+ PHP versions simultaneously
<?php $s = 'Odpoštěno'; $s = mb_strtolower($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)
8.3.70.0100.01016.63
8.3.60.0100.00716.75
8.3.50.0090.01522.06
8.3.40.0040.01218.77
8.3.30.0140.00319.10
8.3.20.0030.00620.24
8.3.10.0040.00421.65
8.3.00.0060.00320.65
8.2.180.0100.01416.75
8.2.170.0070.01022.96
8.2.160.0130.00322.20
8.2.150.0070.01024.18
8.2.140.0000.00924.66
8.2.130.0060.00326.16
8.2.120.0090.00319.71
8.2.110.0090.00322.33
8.2.100.0100.00617.88
8.2.90.0060.00319.30
8.2.80.0070.00417.97
8.2.70.0060.00317.88
8.2.60.0000.00918.29
8.2.50.0070.00318.07
8.2.40.0090.00018.41
8.2.30.0100.00018.30
8.2.20.0090.00017.80
8.2.10.0090.00018.22
8.2.00.0060.00317.93
8.1.280.0030.01425.92
8.1.270.0100.00020.86
8.1.260.0100.00726.35
8.1.250.0160.00628.09
8.1.240.0070.00324.10
8.1.230.0100.00319.34
8.1.220.0060.00317.84
8.1.210.0060.00318.77
8.1.200.0080.00417.60
8.1.190.0050.00517.47
8.1.180.0030.00618.10
8.1.170.0030.00718.66
8.1.160.0060.00322.12
8.1.150.0030.00619.02
8.1.140.0050.00519.43
8.1.130.0040.00417.88
8.1.120.0040.00417.50
8.1.110.0030.00617.44
8.1.100.0030.00617.59
8.1.90.0030.00617.54
8.1.80.0090.00017.59
8.1.70.0040.00417.60
8.1.60.0030.00717.59
8.1.50.0030.00617.68
8.1.40.0090.00017.73
8.1.30.0030.00617.85
8.1.20.0040.00817.74
8.1.10.0070.00317.69
8.1.00.0030.01017.71
8.0.300.0060.00318.77
8.0.290.0040.00416.73
8.0.280.0030.00618.53
8.0.270.0000.00817.38
8.0.260.0030.00917.36
8.0.250.0030.00617.05
8.0.240.0000.00817.16
8.0.230.0000.00817.03
8.0.220.0040.00417.13
8.0.210.0040.00417.09
8.0.200.0030.00617.13
8.0.190.0060.00317.13
8.0.180.0030.00617.12
8.0.170.0040.00717.09
8.0.160.0000.00817.11
8.0.150.0080.00016.91
8.0.140.0030.00616.98
8.0.130.0030.00313.48
8.0.120.0000.01017.04
8.0.110.0000.00916.98
8.0.100.0060.00317.00
8.0.90.0000.00917.02
8.0.80.0060.01217.03
8.0.70.0000.00817.00
8.0.60.0000.01016.97
8.0.50.0000.00917.11
8.0.30.0100.01917.25
8.0.20.0120.01417.40
8.0.10.0090.00016.98
8.0.00.0140.01416.93
7.4.330.0050.00515.13
7.4.320.0000.00816.61
7.4.300.0050.00516.72
7.4.290.0000.00916.52
7.4.280.0060.00316.71
7.4.270.0030.00616.67
7.4.260.0030.00616.69
7.4.250.0060.00316.66
7.4.240.0060.00316.57
7.4.230.0040.00416.75
7.4.220.0070.01416.73
7.4.210.0130.00616.72
7.4.200.0030.00616.70
7.4.160.0220.01216.55
7.4.150.0150.01617.40
7.4.140.0200.00817.86
7.4.130.0150.01016.51
7.4.120.0190.00516.65
7.4.110.0040.02116.48
7.4.100.0140.01716.54
7.4.90.0130.01416.73
7.4.80.0160.01616.57
7.4.70.0030.01916.63
7.4.60.0140.00716.52
7.4.50.0060.00616.82
7.4.40.0130.00716.56
7.4.30.0120.02416.58
7.4.00.0060.01415.00
7.3.330.0030.00313.25
7.3.320.0220.00013.52
7.3.310.0070.00316.43
7.3.300.0070.00316.59
7.3.290.0070.01316.57
7.3.280.0070.01416.55
7.3.270.0120.01517.40
7.3.260.0140.01016.57
7.3.250.0150.01316.42
7.3.240.0030.02016.72
7.3.230.0170.00316.39
7.3.210.0140.01116.62
7.3.200.0070.02219.39
7.3.190.0030.01716.61
7.3.180.0090.01516.68
7.3.170.0190.00716.79
7.3.160.0210.00816.63
7.3.120.0070.01415.05
7.3.110.0120.01114.98
7.3.100.0090.00914.86
7.3.90.0100.00614.75
7.3.80.0050.01215.02
7.3.70.0030.01215.00
7.3.60.0070.01014.94
7.3.50.0040.01414.88
7.3.40.0060.01214.73
7.3.30.0050.01115.05
7.3.20.0070.00716.73
7.3.10.0020.01216.95
7.3.00.0050.01116.73
7.2.330.0130.03916.85
7.2.320.0190.04216.73
7.2.310.0100.05916.85
7.2.300.0070.04016.79
7.2.290.0240.04516.93
7.2.250.0050.05615.10
7.2.240.0050.04915.35
7.2.230.0030.04615.09
7.2.220.0070.04114.82
7.2.210.0050.04015.22
7.2.200.0000.04714.99
7.2.190.0030.04315.13
7.2.180.0030.04215.08
7.2.170.0070.03715.35
7.2.60.0130.02017.06
7.2.00.0030.02819.35
7.1.330.0070.05215.67
7.1.320.0030.05615.99
7.1.310.0070.05015.97
7.1.300.0030.05215.96
7.1.290.0080.04715.90
7.1.280.0070.05415.94
7.1.270.0080.04915.82
7.1.260.0080.05016.10
7.1.200.0030.03016.10
7.1.100.0130.03218.32
7.1.70.0060.02517.31
7.1.60.0030.06219.46
7.1.50.0030.05916.92
7.1.00.0070.10722.43
7.0.200.0100.02315.18
7.0.140.0070.04721.99
7.0.60.0030.11020.03
7.0.50.0130.08317.92
7.0.40.0070.07020.03
7.0.30.0200.06320.18
7.0.20.0370.09720.16
7.0.10.0070.08020.01
7.0.00.0100.07020.13
5.6.280.0070.09721.07
5.6.210.0170.08020.62
5.6.200.0100.09718.10
5.6.190.0130.05320.43
5.6.180.0530.08720.43
5.6.170.0230.07320.54
5.6.160.0100.07320.41
5.6.150.0100.10718.21
5.6.140.0070.05718.05
5.6.130.0130.05318.15
5.6.120.0170.07320.89
5.6.110.0100.11320.94
5.6.100.0230.05721.12
5.6.90.0130.11021.00
5.6.80.0070.06020.38
5.5.350.0330.08720.40
5.5.340.0070.05717.91
5.5.330.0100.10720.37
5.5.320.0030.05720.29
5.5.310.0270.10720.12
5.5.300.0130.07017.87
5.5.290.0100.11018.01
5.5.280.0000.08020.84
5.5.270.0030.06020.72
5.5.260.0130.09720.64
5.5.250.0070.10720.46
5.5.240.0100.10720.12
5.4.450.0770.10019.57
5.4.440.1100.11719.57
5.4.430.1100.12719.43
5.4.420.0870.08719.64
5.4.410.0730.10319.33
5.4.400.1100.08318.78
5.4.390.0200.09018.65
5.4.380.0130.09718.68
5.4.370.0400.07318.66
5.4.360.0270.07718.56
5.4.350.0270.08318.74
5.4.340.0270.08318.45
5.4.320.0200.10318.65
5.4.310.0170.09318.66
5.4.300.0300.08718.77
5.4.290.0200.08718.66
5.4.280.0370.10318.73
5.4.270.0200.09718.50
5.4.260.0570.10718.44
5.4.250.0270.08718.64
5.4.240.0200.14318.59
5.4.230.0200.09718.57
5.4.220.0200.09718.70
5.4.210.0270.12318.76
5.4.200.0170.09016.45
5.4.190.0230.09318.61
5.4.180.0100.09718.43
5.4.170.0230.10318.75
5.4.160.0200.08318.54
5.4.150.0200.09018.66
5.4.140.0330.13716.07
5.4.130.0170.09016.25
5.4.120.0300.12016.12
5.4.110.0300.11716.33
5.4.100.0330.13716.22
5.4.90.0330.13716.34
5.4.80.0230.12716.20
5.4.70.0370.13016.34
5.4.60.0570.12716.17
5.4.50.0330.15716.22
5.4.40.0130.11716.23
5.4.30.0230.10716.01
5.4.20.0170.11016.23
5.4.10.0230.11016.03
5.4.00.0170.10015.77
5.3.290.0130.10014.60
5.3.280.0130.09714.54
5.3.270.0430.07314.66
5.3.260.0200.08314.55
5.3.250.0300.08314.63
5.3.240.0230.09314.70
5.3.230.0170.10314.51
5.3.220.0100.11714.48
5.3.210.0170.09314.65
5.3.200.0400.11714.57
5.3.190.0300.15014.61
5.3.180.0300.13314.65
5.3.170.0300.13314.65
5.3.160.0300.12014.45
5.3.150.0270.11014.51
5.3.140.0300.08014.47
5.3.130.0230.13714.54
5.3.120.0400.11314.45
5.3.110.0100.09314.57
5.3.100.0230.08313.93
5.3.90.0270.08013.93
5.3.80.0070.09314.03
5.3.70.0100.08714.00
5.3.60.0270.10714.00
5.3.50.0230.07313.84
5.3.40.0230.08713.93
5.3.30.0370.07313.98
5.3.20.0170.09013.68
5.3.10.0170.09713.74
5.3.00.0100.09013.54
5.2.170.0030.08311.13
5.2.160.0130.08011.21
5.2.150.0130.07711.15
5.2.140.0130.06711.10
5.2.130.0200.06011.24
5.2.120.0470.07011.09
5.2.110.0200.06011.04
5.2.100.0100.07011.04
5.2.90.0200.06711.08
5.2.80.0170.07711.11
5.2.70.0130.08011.08
5.2.60.0200.08010.96
5.2.50.0300.08011.15
5.2.40.0130.08010.98
5.2.30.0170.09011.02
5.2.20.0230.08710.95
5.2.10.0000.09010.86
5.2.00.0130.07010.86
5.1.60.0200.07010.08
5.1.50.0130.09310.01
5.1.40.0200.07010.12
5.1.30.0100.08310.32
5.1.20.0130.07010.48
5.1.10.0230.07310.13
5.1.00.0300.05310.14
5.0.50.0100.0808.71
5.0.40.0100.0608.51
5.0.30.0130.0808.25
5.0.20.0130.0638.29
5.0.10.0130.0678.35
5.0.00.0100.0808.24
4.4.90.0070.0576.00
4.4.80.0000.0705.93
4.4.70.0030.0575.85
4.4.60.0230.0535.95
4.4.50.0100.0605.87
4.4.40.0030.0835.88
4.4.30.0030.0675.92
4.4.20.0100.0605.95
4.4.10.0030.0576.05
4.4.00.0070.0775.93
4.3.110.0170.0505.91
4.3.100.0130.0535.96
4.3.90.0130.0576.00
4.3.80.0100.0736.29
4.3.70.0130.0605.89
4.3.60.0030.0635.84
4.3.50.0200.0575.86
4.3.40.0100.0835.82
4.3.30.0270.0574.65
4.3.20.0100.1034.61
4.3.10.0170.0834.60
4.3.00.0230.03714.42

preferences:
47.06 ms | 401 KiB | 5 Q