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 4. No redefining $test 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 $value = $v(); // and a callback! $this->{$key} = $value; } } $test = new Test; // start editing here $test->callback = function() { var_dump('asd'); }; // 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)
8.3.70.0070.00716.75
8.3.60.0100.00718.68
8.3.50.0090.00822.00
8.3.40.0070.00719.00
8.3.30.0070.00719.01
8.3.20.0070.00020.34
8.3.10.0080.00022.14
8.3.00.0080.00022.39
8.2.190.0180.00316.88
8.2.180.0120.00316.75
8.2.170.0090.00922.96
8.2.160.0100.00721.01
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0000.00819.61
8.2.110.0080.00022.10
8.2.100.0060.00619.64
8.2.90.0040.00419.22
8.2.80.0040.00417.97
8.2.70.0100.00017.50
8.2.60.0080.00017.93
8.2.50.0070.00318.07
8.2.40.0060.00618.34
8.2.30.0000.00718.02
8.2.20.0040.00417.68
8.2.10.0040.00419.47
8.2.00.0040.00417.88
8.1.280.0110.00425.92
8.1.270.0000.00722.10
8.1.260.0030.00626.35
8.1.250.0050.00328.09
8.1.240.0060.00323.86
8.1.230.0110.00019.15
8.1.220.0000.00817.77
8.1.210.0030.00518.77
8.1.200.0040.00417.47
8.1.190.0020.00517.51
8.1.180.0040.00418.10
8.1.170.0060.00318.64
8.1.160.0000.00722.06
8.1.150.0080.00018.66
8.1.140.0050.00217.45
8.1.130.0030.00517.82
8.1.120.0000.00717.49
8.1.110.0080.00017.42
8.1.100.0040.00417.41
8.1.90.0000.00817.34
8.1.80.0020.00517.53
8.1.70.0040.00417.45
8.1.60.0080.00017.61
8.1.50.0040.00417.55
8.1.40.0070.00017.59
8.1.30.0000.00917.69
8.1.20.0040.00417.58
8.1.10.0020.00517.48
8.1.00.0080.00017.51
8.0.300.0070.00018.77
8.0.290.0040.00417.05
8.0.280.0040.00418.41
8.0.270.0070.00017.21
8.0.260.0060.00016.86
8.0.250.0080.00016.96
8.0.240.0070.00016.91
8.0.230.0030.00316.96
8.0.220.0040.00416.93
8.0.210.0000.00716.93
8.0.200.0000.00717.02
8.0.190.0070.00017.04
8.0.180.0000.00716.89
8.0.170.0040.00416.96
8.0.160.0050.00316.99
8.0.150.0040.00416.93
8.0.140.0030.00316.98
8.0.130.0050.00313.37
8.0.120.0050.00316.96
8.0.110.0040.00416.89
8.0.100.0000.00716.91
8.0.90.0000.00716.92
8.0.80.0060.01316.89
8.0.70.0050.00216.93
8.0.60.0040.00416.95
8.0.50.0040.00417.00
8.0.30.0070.01217.21
8.0.20.0080.01017.45
8.0.10.0000.00817.16
8.0.00.0130.00716.71
7.4.330.0000.00515.09
7.4.320.0000.00616.42
7.4.300.0030.00616.50
7.4.290.0070.00016.67
7.4.280.0000.00816.49
7.4.270.0000.00716.63
7.4.260.0000.01016.60
7.4.250.0080.00016.39
7.4.240.0030.00616.58
7.4.230.0030.00316.60
7.4.220.0170.01016.57
7.4.210.0090.00816.59
7.4.200.0070.00016.42
7.4.190.0030.00316.66
7.4.160.0100.01016.59
7.4.150.0070.01117.40
7.4.140.0100.01017.86
7.4.130.0060.01116.59
7.4.120.0100.00916.57
7.4.110.0100.00716.68
7.4.100.0090.01216.54
7.4.90.0040.01516.61
7.4.80.0060.01219.39
7.4.70.0130.00616.41
7.4.60.0060.00916.53
7.4.50.0060.00316.60
7.4.40.0120.00322.77
7.4.30.0060.01016.50
7.4.10.0100.01014.89
7.4.00.0050.01115.05
7.3.330.0000.00513.39
7.3.320.0000.00513.32
7.3.310.0030.00316.19
7.3.300.0050.00216.25
7.3.290.0100.00516.42
7.3.280.0060.01116.35
7.3.270.0110.01117.40
7.3.260.0070.01016.66
7.3.250.0080.00916.49
7.3.240.0030.01816.43
7.3.230.0060.01016.57
7.3.210.0080.01116.45
7.3.200.0170.00319.39
7.3.190.0120.01216.43
7.3.180.0090.00616.56
7.3.170.0060.01216.57
7.3.160.0100.00716.50
7.3.130.0070.01115.04
7.3.120.0070.00814.88
7.3.110.0100.01014.61
7.3.100.0100.00714.76
7.3.90.0140.00314.92
7.3.80.0070.00414.70
7.3.70.0110.00014.62
7.3.60.0080.00314.94
7.3.50.0070.00714.95
7.3.40.0100.00314.90
7.3.30.0000.00914.87
7.3.20.0030.00616.66
7.3.10.0030.00616.59
7.3.00.0000.01216.79
7.2.330.0040.01216.39
7.2.320.0120.00616.73
7.2.310.0040.01516.80
7.2.300.0120.01216.38
7.2.290.0040.01116.50
7.2.260.0040.01515.29
7.2.250.0030.01614.82
7.2.240.0070.00715.20
7.2.230.0070.00715.13
7.2.220.0070.01014.98
7.2.210.0070.00415.15
7.2.200.0060.00914.91
7.2.190.0080.00814.80
7.2.180.0080.00414.91
7.2.170.0130.00315.01
7.2.160.0070.00715.04
7.2.150.0070.00716.95
7.2.140.0070.00316.85
7.2.130.0070.00716.75
7.2.120.0060.00917.00
7.2.110.0090.00616.56
7.2.100.0080.00316.76
7.2.90.0060.00617.07
7.2.80.0070.00417.03
7.2.70.0060.01016.71
7.2.60.0050.00916.79
7.2.50.0030.00916.72
7.2.40.0070.00716.88
7.2.30.0060.00316.96
7.2.20.0070.00716.77
7.2.10.0000.01616.89
7.2.00.0060.00818.10
7.1.330.0100.00315.90
7.1.320.0030.01015.96
7.1.310.0070.00715.59
7.1.300.0030.00615.84
7.1.290.0000.01015.56
7.1.280.0030.00615.73
7.1.270.0060.00915.70
7.1.260.0030.00615.82
7.1.250.0100.00315.64
7.1.240.0090.00615.61
7.1.230.0000.00915.98
7.1.220.0060.00616.00
7.1.210.0070.00715.77
7.1.200.0040.00915.54
7.1.190.0030.00615.88
7.1.180.0040.00715.84
7.1.170.0100.00615.87
7.1.160.0040.00815.81
7.1.150.0070.00715.66
7.1.140.0120.00615.70
7.1.130.0070.00715.69
7.1.120.0000.01015.60
7.1.110.0060.01015.80
7.1.100.0090.00516.95
7.1.90.0040.01115.95
7.1.80.0070.00715.98
7.1.70.0040.00716.42
7.1.60.0070.00917.86
7.1.50.0050.01116.53
7.1.40.0030.01415.84
7.1.30.0030.01315.90
7.1.20.0060.00315.81
7.1.10.0040.01115.63
7.1.00.0050.04018.99
7.0.330.0060.00315.38
7.0.320.0030.01015.18
7.0.310.0080.00415.22
7.0.300.0120.00415.23
7.0.290.0090.00015.45
7.0.280.0070.00715.33
7.0.270.0090.00615.43
7.0.260.0060.00615.15
7.0.250.0090.00615.35
7.0.240.0060.00615.36
7.0.230.0060.00615.04
7.0.220.0000.00915.55
7.0.210.0100.00315.36
7.0.200.0040.00515.97
7.0.190.0030.00915.41
7.0.180.0040.00815.47
7.0.170.0080.00815.39
7.0.160.0080.00015.41
7.0.150.0060.00315.24
7.0.140.0030.04218.70
7.0.130.0030.01215.55
7.0.120.0060.00615.36
7.0.110.0070.01015.34
7.0.100.0080.02717.64
7.0.90.0060.02617.76
7.0.80.0070.02817.67
7.0.70.0100.02117.78
7.0.60.0080.02317.63
7.0.50.0050.03317.94
7.0.40.0070.02316.86
7.0.30.0080.02116.64
7.0.20.0030.03016.81
7.0.10.0070.02316.84
7.0.00.0050.02516.74
5.6.400.0070.00714.29
5.6.390.0060.00614.80
5.6.380.0090.00714.80
5.6.370.0040.01214.61
5.6.360.0060.00914.59
5.6.350.0000.01214.42
5.6.340.0030.00614.54
5.6.330.0030.00614.27
5.6.320.0060.00614.49
5.6.310.0130.00314.54
5.6.300.0090.00614.60
5.6.290.0060.00914.38
5.6.280.0050.03917.72
5.6.270.0110.00314.33
5.6.260.0040.01114.39
5.6.250.0120.04017.48
5.6.240.0050.02717.55
5.6.230.0070.03517.59
5.6.220.0040.02817.48
5.6.210.0050.02517.68
5.6.200.0060.03517.91
5.6.190.0120.03717.68
5.6.180.0050.03017.72
5.6.170.0030.02517.82
5.6.160.0060.02117.63
5.6.150.0020.02817.63
5.6.140.0070.02217.69
5.6.130.0080.01917.69
5.6.120.0080.02317.67
5.6.110.0020.02817.80
5.6.100.0040.02017.60
5.6.90.0060.02117.62
5.6.80.0020.02617.53
5.6.70.0030.03117.38
5.6.60.0030.02517.39
5.6.50.0050.02317.39
5.6.40.0020.02717.42
5.6.30.0000.02917.46
5.6.20.0030.02417.33
5.6.10.0020.02517.31
5.6.00.0020.03417.27
5.5.380.0050.02517.31
5.5.370.0050.02817.33
5.5.360.0050.02517.57
5.5.350.0030.02917.38
5.5.340.0110.04217.56
5.5.330.0070.03317.64
5.5.320.0050.02317.60
5.5.310.0020.02717.62
5.5.300.0050.03017.54
5.5.290.0040.02517.43
5.5.280.0070.02217.54
5.5.270.0080.02217.47
5.5.260.0050.02517.71
5.5.250.0070.02517.46
5.5.240.0070.02417.23
5.5.230.0070.02117.21
5.5.220.0030.02517.34
5.5.210.0050.02317.25
5.5.200.0030.02517.21
5.5.190.0050.02417.09
5.5.180.0050.02717.19
5.5.170.0000.01314.11
5.5.160.0090.02017.22
5.5.150.0050.03017.20
5.5.140.0020.03317.16
5.5.130.0060.02617.13
5.5.120.0040.04117.24
5.5.110.0030.03417.37
5.5.100.0110.04017.04
5.5.90.0100.03917.07
5.5.80.0050.04517.09
5.5.70.0070.03917.04
5.5.60.0080.03817.21
5.5.50.0020.05016.87
5.5.40.0080.04117.29
5.5.30.0070.04017.21
5.5.20.0030.04317.24
5.5.10.0050.03516.98
5.5.00.0050.02717.21
5.4.450.0060.02115.52
5.4.440.0070.01915.54
5.4.430.0020.02315.56
5.4.420.0030.02215.39
5.4.410.0100.01515.41
5.4.400.0040.01815.38
5.4.390.0030.02515.24
5.4.380.0050.02015.36
5.4.370.0070.01715.32
5.4.360.0030.02215.24
5.4.350.0020.02115.41
5.4.340.0090.01815.38
5.4.330.0060.00311.58
5.4.320.0070.03015.36
5.4.310.0020.02315.36
5.4.300.0050.04015.31
5.4.290.0030.04315.32
5.4.280.0080.03515.31
5.4.270.0070.02315.36
5.4.260.0050.03815.41
5.4.250.0070.04415.30
5.4.240.0070.04115.39
5.4.230.0070.03915.34
5.4.220.0080.02215.31
5.4.210.0030.03815.24
5.4.200.0030.04315.31
5.4.190.0030.03915.26
5.4.180.0000.04515.22
5.4.170.0100.03015.38
5.4.160.0070.04115.34
5.4.150.0030.02615.38
5.4.140.0100.03713.94
5.4.130.0020.03613.93
5.4.120.0070.02013.89
5.4.110.0070.03314.02
5.4.100.0060.03814.01
5.4.90.0050.04014.05
5.4.80.0030.03014.04
5.4.70.0030.02313.97
5.4.60.0030.02714.02
5.4.50.0100.03713.97
5.4.40.0020.03814.04
5.4.30.0070.03713.95
5.4.20.0030.02614.03
5.4.10.0070.02213.99
5.4.00.0080.03413.72
5.3.290.0070.02513.18
5.3.280.0020.04313.12
5.3.270.0020.02913.16
5.3.260.0070.02213.06
5.3.250.0020.02713.09
5.3.240.0050.03813.13
5.3.230.0060.04213.09
5.3.220.0030.04013.04
5.3.210.0060.02013.09
5.3.200.0040.03813.04
5.3.190.0030.02013.07
5.3.180.0050.03513.05
5.3.170.0050.04013.04
5.3.160.0030.04013.11
5.3.150.0020.03113.07
5.3.140.0050.03013.08
5.3.130.0020.02613.10
5.3.120.0090.03613.06
5.3.110.0030.02913.10
5.3.100.0040.02212.80
5.3.90.0020.03512.81
5.3.80.0060.03812.83
5.3.70.0030.04212.84
5.3.60.0050.02912.80
5.3.50.0020.03812.79
5.3.40.0030.03812.82
5.3.30.0070.03112.74
5.3.20.0030.04112.59
5.3.10.0050.03512.61
5.3.00.0070.03412.56
5.2.170.0070.06311.18
5.2.160.0070.06311.04
5.2.150.0030.04311.18
5.2.140.0130.05311.03
5.2.130.0070.04311.23
5.2.120.0030.05311.04
5.2.110.0000.05011.17
5.2.100.0030.06011.23
5.2.90.0070.05011.17
5.2.80.0000.06311.11
5.2.70.0130.05311.21
5.2.60.0070.06011.07
5.2.50.0170.04711.12
5.2.40.0130.04711.04
5.2.30.0070.03311.05
5.2.20.0070.05010.98
5.2.10.0030.02710.92
5.2.00.0030.04310.74
5.1.60.0070.04010.08
5.1.50.0070.05010.07
5.1.40.0030.0479.98
5.1.30.0070.04310.37
5.1.20.0070.04710.52
5.1.10.0100.0439.94
5.1.00.0070.05010.19
5.0.50.0000.0308.55
5.0.40.0030.0438.26
5.0.30.0030.0608.24
5.0.20.0130.0338.21
5.0.10.0070.0308.27
5.0.00.0100.0608.21
4.4.90.0100.0308.21
4.4.80.0030.0308.21
4.4.70.0000.0338.21
4.4.60.0000.0378.21
4.4.50.0030.0278.21
4.4.40.0000.0538.21
4.4.30.0000.0378.21
4.4.20.0000.0408.21
4.4.10.0070.0208.21
4.4.00.0070.0478.21
4.3.110.0070.0308.21
4.3.100.0000.0378.21
4.3.90.0070.0308.21
4.3.80.0000.0238.21
4.3.70.0030.0278.21
4.3.60.0000.0238.21
4.3.50.0000.0208.21
4.3.40.0000.0278.21
4.3.30.0000.0178.21
4.3.20.0000.0308.21
4.3.10.0030.0338.21
4.3.00.0000.0308.21

preferences:
40.36 ms | 401 KiB | 5 Q