3v4l.org

run code in 300+ PHP versions simultaneously
<?php /* Challenge 1: Modify Test::$secret before it's output. Rules:: 1. No use of Reflection API / runkit extension 2. No stopping execution before Test::run() 3. No Exceptions or PHP errors / warnings notices allowed Hints: 1. Caesar 2. Magic methods 3. Requires a new feature of PHP 5.4 */ class Test { private $secret = 'Nyy lbhe Onfr ner orybat gb hf.'; private $callback; final public function run() { call_user_func($this->callback); return $this->secret . PHP_EOL; } public function __set($k, $v) { $key = $v[($v[$v])]; // $v is some kind of weird array var_dump('key:::::'.$v()); $value = $v(); // and a callback! $this->{$key} = $value; } } $test = new Test; // start editing here function caesar($str, $n) { $ret = ""; for($i = 0, $l = strlen($str); $i < $l; ++$i) { $c = ord($str[$i]); if (97 <= $c && $c < 123) { $ret.= chr(($c + $n + 7) % 26 + 97); } else if(65 <= $c && $c < 91) { $ret.= chr(($c + $n + 13) % 26 + 65); } else { $ret.= $str[$i]; } } return $ret; } $array = (array) $test; reset($array); $first_key = key($array); print_r($array[$first_key]); //used this to figure out the count: // http://rumkin.com/tools/cipher/caesar.php $secret = caesar($array[$first_key],13); //print_r('the secret is:'.$secret); //$test->__set($secret , $secret[$secret]['yum']); $test->__set('secret' , $secret[$secret[$secret]]); // end editing here echo $test->run();

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)
8.3.60.0110.00416.88
8.3.50.0130.01122.06
8.3.40.0140.00318.78
8.3.30.0110.00419.02
8.3.20.0040.00420.29
8.3.10.0000.00823.64
8.3.00.0000.00919.38
8.2.180.0160.00318.29
8.2.170.0110.00722.96
8.2.160.0070.00720.36
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0120.00626.16
8.2.120.0050.00322.26
8.2.110.0080.00320.31
8.2.100.0080.00317.91
8.2.90.0050.00319.17
8.2.80.0060.00317.97
8.2.70.0030.00617.75
8.2.60.0060.00318.03
8.2.50.0030.00518.07
8.2.40.0030.00620.07
8.2.30.0040.00418.08
8.2.20.0040.00417.71
8.2.10.0050.00218.13
8.2.00.0000.01017.83
8.1.280.0110.00425.92
8.1.270.0030.00523.94
8.1.260.0060.00326.35
8.1.250.0040.00428.09
8.1.240.0060.00323.97
8.1.230.0030.00917.61
8.1.220.0030.00617.77
8.1.210.0080.00318.77
8.1.200.0040.00417.48
8.1.190.0040.00417.52
8.1.180.0060.00318.10
8.1.170.0030.00618.63
8.1.160.0040.00422.03
8.1.150.0000.00918.71
8.1.140.0060.00317.34
8.1.130.0000.00817.72
8.1.120.0070.00017.35
8.1.110.0040.00417.33
8.1.100.0000.00817.38
8.1.90.0050.00317.50
8.1.80.0030.00317.54
8.1.70.0070.00017.36
8.1.60.0000.00817.59
8.1.50.0000.00817.52
8.1.40.0050.00317.45
8.1.30.0080.00017.66
8.1.20.0000.00817.73
8.1.10.0000.00717.65
8.1.00.0020.00517.43
8.0.300.0040.00418.77
8.0.290.0000.00716.75
8.0.280.0000.00718.54
8.0.270.0000.00717.25
8.0.260.0030.00317.19
8.0.250.0070.00017.05
8.0.240.0040.00417.03
8.0.230.0000.00717.06
8.0.220.0030.00316.96
8.0.210.0080.00016.96
8.0.200.0000.00616.93
8.0.190.0060.00317.06
8.0.180.0070.00017.06
8.0.170.0080.00016.91
8.0.160.0000.00716.98
8.0.150.0040.00416.98
8.0.140.0000.00716.86
8.0.130.0030.00313.38
8.0.120.0050.00316.98
8.0.110.0000.00716.86
8.0.100.0000.00717.02
8.0.90.0040.00416.85
8.0.80.0030.01216.89
8.0.70.0000.00717.09
8.0.60.0000.00817.05
8.0.50.0000.00716.84
8.0.30.0140.00817.22
8.0.20.0130.01017.40
8.0.10.0030.00517.22
8.0.00.0090.00816.91
7.4.330.0050.00015.00
7.4.320.0030.00316.58
7.4.300.0040.00416.54
7.4.290.0000.00716.61
7.4.280.0050.00316.66
7.4.270.0040.00416.67
7.4.260.0000.00716.65
7.4.250.0040.00416.51
7.4.240.0000.00716.53
7.4.230.0030.00316.43
7.4.220.0090.00916.48
7.4.210.0120.00516.62
7.4.200.0040.00416.37
7.4.190.0040.00416.57
7.4.160.0100.00716.71
7.4.150.0040.01317.40
7.4.140.0160.00317.86
7.4.130.0150.01116.66
7.4.120.0090.00916.42
7.4.110.0030.01316.55
7.4.100.0070.01016.45
7.4.90.0130.00616.44
7.4.80.0140.00619.39
7.4.70.0020.01816.72
7.4.60.0120.01216.58
7.4.50.0000.00416.55
7.4.40.0100.00322.77
7.4.30.0100.00616.55
7.4.00.0070.01015.26
7.3.330.0020.00213.44
7.3.320.0000.00813.46
7.3.310.0030.00316.42
7.3.300.0030.00316.38
7.3.290.0070.01016.46
7.3.280.0100.00816.49
7.3.270.0140.00517.40
7.3.260.0040.01416.50
7.3.250.0120.00516.42
7.3.240.0130.00416.54
7.3.230.0100.00716.45
7.3.210.0090.01216.57
7.3.200.0140.00316.39
7.3.190.0070.01116.45
7.3.180.0080.00816.67
7.3.170.0080.00816.49
7.3.160.0170.00316.48
7.3.120.0090.00614.96
7.2.330.0130.00616.71
7.2.320.0090.00916.79
7.2.310.0030.01316.46
7.2.300.0070.01116.84
7.2.290.0030.01316.81
7.2.60.0060.00616.29
7.2.00.0120.00519.41
7.1.200.0030.01315.70
7.1.100.0060.00618.25
7.1.70.0000.00817.18
7.1.60.0070.01719.46
7.1.50.0130.01017.08
7.1.00.0070.07322.36
7.0.200.0000.00716.45
7.0.140.0030.07322.00
7.0.60.0000.05319.95
7.0.50.0030.05717.83
7.0.40.0100.06320.11
7.0.30.0500.05020.09
7.0.20.0230.08320.33
7.0.10.0030.06020.26
7.0.00.0100.04720.32
5.6.280.0030.07321.11
5.6.210.0130.07320.57
5.6.200.0000.07718.22
5.6.190.0130.08320.48
5.6.180.0130.04320.58
5.6.170.0230.04320.47
5.6.160.0030.09020.50
5.6.150.0130.04018.16
5.6.140.0230.07018.18
5.6.130.0000.04718.15
5.6.120.0070.07321.09
5.6.110.0170.06321.13
5.6.100.0130.08020.99
5.6.90.0130.08321.01
5.6.80.0030.07020.30
5.6.70.4500.02720.51
5.5.350.0270.08020.50
5.5.340.0100.07717.99
5.5.330.0000.04720.40
5.5.320.0200.04320.36
5.5.310.0270.08020.19
5.5.300.0130.04717.94
5.5.290.0100.08017.94
5.5.280.0070.05320.69
5.5.270.0170.05020.80
5.5.260.0100.08720.88
5.5.250.0130.07720.60
5.5.240.3800.03720.08
5.4.450.0770.07319.30
5.4.440.0730.04719.57
5.4.430.0200.05319.32
5.4.420.0830.05019.29
5.4.410.0670.05719.44
5.4.400.0570.05319.05
5.4.390.0130.05319.25
5.4.380.0400.05318.61
5.4.370.0200.06718.75
5.4.360.0570.06718.51
5.4.350.0470.04318.79
5.4.340.0200.08718.73
5.4.320.0080.03512.52
5.4.310.0050.03912.52
5.4.300.0040.04112.52
5.4.290.0050.04412.50
5.4.280.0080.03712.39
5.4.270.0060.03812.39
5.4.260.0060.03912.39
5.4.250.0080.03612.39
5.4.240.0050.03812.40
5.4.230.0040.04112.39
5.4.220.0060.03612.39
5.4.210.0040.04112.39
5.4.200.0050.06312.39
5.4.190.0110.05012.39
5.4.180.0070.03912.38
5.4.170.0060.03712.39
5.4.160.0050.03912.39
5.4.150.0080.03612.39
5.4.140.0070.03712.07
5.4.130.0070.03912.06
5.4.120.0090.04012.00
5.4.110.0080.03912.01
5.4.100.0080.04912.01
5.4.90.0060.04112.01
5.4.80.0050.04112.01
5.4.70.0050.03812.01
5.4.60.0090.04112.00
5.4.50.0040.04212.00
5.4.40.0110.04811.99
5.4.30.0100.04811.98
5.4.20.0080.05211.99
5.4.10.0060.05211.99
5.4.00.0070.05211.48
5.3.290.0050.04212.80
5.3.280.0110.06512.71
5.3.270.0060.04512.72
5.3.260.0060.06012.72
5.3.250.0110.05212.72
5.3.240.0090.05412.72
5.3.230.0110.06612.71
5.3.220.0130.10112.68
5.3.210.0120.08912.68
5.3.200.0090.05212.68
5.3.190.0090.03712.68
5.3.180.0080.05312.67
5.3.170.0080.05312.67
5.3.160.0090.05212.68
5.3.150.0080.05412.67
5.3.140.0070.04012.66
5.3.130.0020.05012.66
5.3.120.0100.04612.66
5.3.110.0090.04312.66
5.3.100.0050.04212.13
5.3.90.0080.03612.11
5.3.80.0070.03912.10
5.3.70.0060.03712.10
5.3.60.0060.03912.09
5.3.50.0070.03612.04
5.3.40.0040.03912.04
5.3.30.0050.03712.00
5.3.20.0050.03711.78
5.3.10.0070.03511.74
5.3.00.0030.03811.74
5.2.170.0050.0319.23
5.2.160.0040.0309.23
5.2.150.0050.0309.24
5.2.140.0030.0339.23
5.2.130.0080.0319.20
5.2.120.0050.0319.19
5.2.110.0050.0319.20
5.2.100.0060.0299.20
5.2.90.0090.0279.20
5.2.80.0050.0329.19
5.2.70.0040.0359.19
5.2.60.0050.0329.14
5.2.50.0050.0309.11
5.2.40.0070.0319.09
5.2.30.0030.0329.07
5.2.20.0050.0309.05
5.2.10.0050.0278.96
5.2.00.0020.0328.82
5.1.60.0030.0258.10
5.1.50.0050.0258.10
5.1.40.0040.0258.08
5.1.30.0050.0268.43
5.1.20.0050.0278.46
5.1.10.0080.0228.18
5.1.00.0030.0278.18
5.0.50.0030.0216.67
5.0.40.0060.0176.52
5.0.30.0040.0336.34
5.0.20.0020.0236.30
5.0.10.0030.0306.28
5.0.00.0050.0426.27
4.4.90.0030.0174.78
4.4.80.0050.0214.75
4.4.70.0050.0234.76
4.4.60.0020.0194.76
4.4.50.0060.0194.77
4.4.40.0050.0414.71
4.4.30.0040.0164.76
4.4.20.0040.0284.85
4.4.10.0050.0204.85
4.4.00.0040.0274.76
4.3.110.0020.0184.67
4.3.100.0030.0154.67
4.3.90.0030.0154.63
4.3.80.0070.0224.59
4.3.70.0030.0154.63
4.3.60.0030.0164.63
4.3.50.0050.0144.63
4.3.40.0040.0314.54
4.3.30.0030.0193.30
4.3.20.0040.0163.28
4.3.10.0030.0153.23
4.3.00.0000.01310.54

preferences:
48 ms | 401 KiB | 5 Q