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 $value = $v(); // and a callback! $this->{$key} = $value; } } $test = new Test; // start editing here $test->callback = '1'; // 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)
8.3.60.0040.01218.55
8.3.50.0160.00616.74
8.3.40.0090.00618.88
8.3.30.0090.00620.39
8.3.20.0080.00020.11
8.3.10.0040.00421.95
8.3.00.0070.00022.34
8.2.180.0170.00316.88
8.2.170.0070.00722.96
8.2.160.0100.00320.53
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0070.01126.16
8.2.120.0030.00717.93
8.2.110.0040.00422.07
8.2.100.0070.00419.34
8.2.90.0050.00219.22
8.2.80.0040.00419.28
8.2.70.0050.00317.73
8.2.60.0060.00317.80
8.2.50.0030.00618.07
8.2.40.0000.01118.16
8.2.30.0040.00418.16
8.2.20.0050.00317.61
8.2.10.0000.00717.87
8.2.00.0070.00017.68
8.1.270.0000.00724.66
8.1.260.0050.00226.35
8.1.250.0070.00028.09
8.1.240.0050.00523.86
8.1.230.0070.00419.03
8.1.220.0040.00417.74
8.1.210.0080.00018.77
8.1.200.0060.00617.35
8.1.190.0080.00017.50
8.1.180.0090.00019.01
8.1.170.0000.00818.62
8.1.160.0000.00722.15
8.1.150.0000.00718.66
8.1.140.0000.00717.33
8.1.130.0070.00017.85
8.1.120.0000.00817.46
8.1.110.0040.00417.33
8.1.100.0000.00817.41
8.1.90.0040.00417.29
8.1.80.0040.00417.34
8.1.70.0000.00717.39
8.1.60.0060.00317.45
8.1.50.0000.00717.41
8.1.40.0000.00817.57
8.1.30.0000.00817.51
8.1.20.0030.00517.56
8.1.10.0000.00717.53
8.1.00.0080.00017.41
8.0.300.0000.00718.77
8.0.290.0020.00517.05
8.0.280.0080.00018.46
8.0.270.0030.00517.18
8.0.260.0000.00816.84
8.0.250.0030.00316.89
8.0.240.0060.00316.86
8.0.230.0000.00716.96
8.0.220.0070.00016.89
8.0.210.0030.00316.83
8.0.200.0000.00616.89
8.0.190.0100.00016.86
8.0.180.0050.00316.98
8.0.170.0080.00016.93
8.0.160.0030.00316.90
8.0.150.0050.00316.91
8.0.140.0000.00716.79
8.0.130.0060.00013.33
8.0.120.0060.00316.73
8.0.110.0000.00716.95
8.0.100.0000.00716.78
8.0.90.0000.00716.86
8.0.80.0070.01016.81
8.0.70.0000.00816.98
8.0.60.0050.00216.91
8.0.50.0040.00416.71
8.0.30.0140.00417.00
8.0.20.0130.00817.42
8.0.10.0040.00416.83
8.0.00.0080.01016.73
7.4.330.0050.00015.00
7.4.320.0030.00616.50
7.4.300.0060.00016.43
7.4.290.0090.00016.64
7.4.280.0050.00316.55
7.4.270.0000.00816.49
7.4.260.0040.00416.56
7.4.250.0030.00316.58
7.4.240.0030.00316.60
7.4.230.0000.00816.33
7.4.220.0080.01216.65
7.4.210.0090.00616.62
7.4.200.0030.00316.62
7.4.190.0070.00016.75
7.4.160.0120.00316.60
7.4.150.0090.00917.40
7.4.140.0090.00917.86
7.4.130.0060.01016.53
7.4.120.0080.01116.47
7.4.110.0100.00716.37
7.4.100.0060.01216.55
7.4.90.0120.00616.59
7.4.80.0030.01419.39
7.4.70.0140.00316.60
7.4.60.0080.00816.52
7.4.50.0040.00416.41
7.4.40.0120.00022.77
7.4.30.0120.00916.39
7.4.00.0030.01215.13
7.3.330.0060.00013.36
7.3.320.0060.00013.32
7.3.310.0070.00016.26
7.3.300.0030.00316.31
7.3.290.0060.01016.37
7.3.280.0070.01016.36
7.3.270.0030.01317.40
7.3.260.0130.00416.63
7.3.250.0090.01216.39
7.3.240.0060.01016.29
7.3.230.0130.00416.39
7.3.210.0130.00316.46
7.3.200.0030.01319.39
7.3.190.0040.01316.50
7.3.180.0100.00516.53
7.3.170.0030.01316.39
7.3.160.0170.00616.21
7.3.120.0060.00914.79
7.2.330.0200.00316.64
7.2.320.0090.01216.72
7.2.310.0070.01116.72
7.2.300.0070.01016.82
7.2.290.0040.01216.54
7.2.60.0040.01116.71
7.1.200.0070.00715.81
7.1.70.0070.00317.23
7.1.60.0100.01319.43
7.1.50.0040.01517.01
7.1.00.0130.02322.51
7.0.200.0030.00316.41
7.0.140.0130.06321.95
7.0.100.0200.07720.04
7.0.90.0370.08019.89
7.0.80.0400.07719.89
7.0.70.0230.07019.87
7.0.60.0100.08020.08
7.0.50.0100.07720.31
7.0.40.0170.06720.08
7.0.30.0130.08319.95
7.0.20.0030.09320.09
7.0.10.0030.05719.95
7.0.00.0070.07320.16
5.6.280.0070.07020.82
5.6.250.0170.07020.61
5.6.240.0070.05020.52
5.6.230.0070.08720.48
5.6.220.0070.07720.51
5.6.210.0070.08020.59
5.6.200.0100.08021.02
5.6.190.0130.07721.07
5.6.180.0070.05721.09
5.6.170.0200.07321.04
5.6.160.0070.04321.14
5.6.150.0030.05320.94
5.6.140.0030.08721.02
5.6.130.0000.09320.99
5.6.120.0030.05721.11
5.6.110.0030.09321.00
5.6.100.0170.08321.01
5.6.90.0100.07320.92
5.6.80.0100.07720.49
5.6.70.0070.04320.52
5.6.60.0070.08020.51
5.6.50.0100.05020.53
5.6.40.0070.04720.42
5.6.30.0070.08020.50
5.6.20.0170.07020.44
5.6.10.0170.05020.44
5.6.00.0130.07320.48
5.5.380.0070.09020.36
5.5.370.0070.07320.34
5.5.360.0070.08320.55
5.5.350.0130.08720.43
5.5.340.0030.04720.91
5.5.330.0100.07720.81
5.5.320.0100.06320.89
5.5.310.0070.08320.83
5.5.300.0070.07720.88
5.5.290.0100.07720.93
5.5.280.0030.05320.86
5.5.270.0200.08020.91
5.5.260.0000.04720.87
5.5.250.0100.04720.71
5.5.240.0130.07320.03
5.5.230.0200.06720.21
5.5.220.0130.06720.18
5.5.210.0030.08720.28
5.5.200.0130.07020.19
5.5.190.0030.05320.00
5.5.180.0170.05720.00
5.5.160.0070.04320.08
5.5.150.0200.06720.14
5.5.140.0170.06320.26
5.5.130.0100.08320.23
5.5.120.0100.06020.24
5.5.110.0200.06720.08
5.5.100.0030.08720.11
5.5.90.0100.08019.95
5.5.80.0170.06319.95
5.5.70.0030.06720.10
5.5.60.0000.07020.00
5.5.50.0100.06319.96
5.5.40.0100.07719.99
5.5.30.0000.09020.15
5.5.20.0030.05720.05
5.5.10.0100.07720.11
5.5.00.0070.05720.03
5.4.450.0100.08019.20
5.4.440.0100.07719.50
5.4.430.0130.07019.53
5.4.420.0070.07719.55
5.4.410.0070.07719.45
5.4.400.0100.07319.07
5.4.390.0200.08019.09
5.4.380.0100.09019.14
5.4.370.0030.08018.87
5.4.360.0100.07019.05
5.4.350.0130.07019.13
5.4.340.0070.07319.03
5.4.320.0170.06019.21
5.4.310.0130.07318.87
5.4.300.0070.04319.04
5.4.290.0070.08019.21
5.4.280.0170.03719.07
5.4.270.0030.04019.03
5.4.260.0030.07319.18
5.4.250.0030.04319.12
5.4.240.0030.03719.04
5.4.230.0030.07319.08
5.4.220.0000.04019.11
5.4.210.0000.04719.05
5.4.200.0070.03319.04
5.4.190.0100.03318.87
5.4.180.0070.08718.84
5.4.170.0000.06719.08
5.4.160.0100.08319.10
5.4.150.0070.06719.08
5.4.140.0100.04016.28
5.4.130.0100.06716.11
5.4.120.0030.07016.27
5.4.110.0070.06316.43
5.4.100.0030.07016.36
5.4.90.0070.04316.27
5.4.80.0000.05016.34
5.4.70.0100.06316.34
5.4.60.0130.06016.45
5.4.50.0130.04716.40
5.4.40.0030.07316.39
5.4.30.0070.06316.40
5.4.20.0070.07316.41
5.4.10.0100.06716.43
5.4.00.0070.07315.80
5.3.290.0030.06714.64
5.3.280.0000.08014.73
5.3.270.0000.04714.73
5.3.260.0070.05014.75
5.3.250.0030.08014.54
5.3.240.0170.06714.59
5.3.230.0100.07314.72
5.3.220.0030.06314.60
5.3.210.0070.08014.54
5.3.200.0070.07714.64
5.3.190.0070.05314.64
5.3.180.0000.04714.53
5.3.170.0000.04714.50
5.3.160.0170.06314.54
5.3.150.0170.06314.62
5.3.140.0070.06014.68
5.3.130.0130.06314.57
5.3.120.0070.04314.50
5.3.110.0100.07314.64
5.3.100.0070.07314.13
5.3.90.0100.07014.11
5.3.80.0130.06314.01
5.3.70.0070.07313.95
5.3.60.0000.07714.01
5.3.50.0030.05713.96
5.3.40.0130.07013.85
5.3.30.0170.04013.96
5.3.20.0130.05713.80
5.3.10.0100.06313.80
5.3.00.0100.05013.57
5.2.170.0030.05012.46
5.2.160.0000.06712.46
5.2.150.0030.06712.46
5.2.140.0030.06012.46
5.2.130.0070.03012.46
5.2.120.0070.06012.46
5.2.110.0100.02712.46
5.2.100.0100.05712.46
5.2.90.0100.05712.46
5.2.80.0070.06012.46
5.2.70.0070.06312.46
5.2.60.0030.04012.46
5.2.50.0000.05012.46
5.2.40.0030.06312.46
5.2.30.0070.05712.46
5.2.20.0030.05312.46
5.2.10.0070.05012.46
5.2.00.0030.06012.46
5.1.60.0030.05012.46
5.1.50.0000.03712.46
5.1.40.0030.05012.46
5.1.30.0070.05012.46
5.1.20.0030.03012.46
5.1.10.0030.04712.46
5.1.00.0030.02712.46
5.0.50.0070.04012.46
5.0.40.0030.04312.46
5.0.30.0070.03012.46
5.0.20.0030.03312.46
5.0.10.0030.03312.46
5.0.00.0070.04712.46
4.4.90.0000.03712.46
4.4.80.0030.03012.46
4.4.70.0000.02712.46
4.4.60.0030.01712.46
4.4.50.0030.03312.46
4.4.40.0000.03312.46
4.4.30.0030.03012.46
4.4.20.0070.02312.46
4.4.10.0070.02312.46
4.4.00.0000.02312.46
4.3.110.0000.02012.46
4.3.100.0030.03312.46
4.3.90.0030.03712.46
4.3.80.0070.02012.46
4.3.70.0100.03012.46
4.3.60.0000.03312.46
4.3.50.0030.03312.46
4.3.40.0030.04712.46
4.3.30.0000.03712.46
4.3.20.0000.04012.46
4.3.10.0030.02312.46
4.3.00.0070.02712.46

preferences:
45.53 ms | 400 KiB | 5 Q