3v4l.org

run code in 300+ PHP versions simultaneously
<?php /* Challenge 2: Implement AnswerInterface and get Question to echo "4". */ class Question { public function __construct(AnswerInterface $answer) { echo "What is 2 + 2?\n"; $answer = $answer->get()->the()->answer(); if ($answer instanceof AnswerInterface) { echo $answer . PHP_EOL; } } } interface AnswerInterface { public function get(); public function the(); public function answer(); } // start editing here class Answer implements AnswerInterface { public function get() { return $this; } public function the() { return $this; } public function answer(){ return 2 + 2; } } // end editing here $answer = new Answer; $question = new Question($answer);

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)
8.3.60.0100.01018.55
8.3.50.0100.01022.05
8.3.40.0090.00618.97
8.3.30.0060.00919.04
8.3.20.0070.00020.21
8.3.10.0070.00021.96
8.3.00.0040.00422.52
8.2.180.0100.00716.63
8.2.170.0080.00818.70
8.2.160.0130.00022.96
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0080.00017.75
8.2.110.0060.00319.33
8.2.100.0000.01217.91
8.2.90.0050.00319.20
8.2.80.0040.00417.97
8.2.70.0000.00817.63
8.2.60.0000.00817.93
8.2.50.0000.00918.10
8.2.40.0000.01118.22
8.2.30.0080.00018.02
8.2.20.0040.00417.72
8.2.10.0040.00419.58
8.2.00.0040.00417.57
8.1.280.0070.00725.92
8.1.270.0080.00022.19
8.1.260.0040.00426.35
8.1.250.0050.00328.09
8.1.240.0070.00322.52
8.1.230.0030.00717.76
8.1.220.0050.00317.74
8.1.210.0040.00418.77
8.1.200.0000.00817.35
8.1.190.0000.00817.35
8.1.180.0030.00618.10
8.1.170.0040.00418.61
8.1.160.0000.00821.95
8.1.150.0000.00718.55
8.1.140.0000.00717.51
8.1.130.0040.00417.87
8.1.120.0070.00017.46
8.1.110.0000.00817.49
8.1.100.0040.00417.45
8.1.90.0080.00017.45
8.1.80.0000.00717.53
8.1.70.0040.00417.35
8.1.60.0050.00317.41
8.1.50.0000.00817.41
8.1.40.0050.00217.47
8.1.30.0000.00817.65
8.1.20.0030.00617.69
8.1.10.0040.00417.56
8.1.00.0040.00417.36
8.0.300.0000.00718.77
8.0.290.0040.00416.75
8.0.280.0050.00218.47
8.0.270.0000.00717.27
8.0.260.0030.00316.88
8.0.250.0060.00316.86
8.0.240.0080.00017.05
8.0.230.0000.00816.93
8.0.220.0000.00716.96
8.0.210.0080.00016.96
8.0.200.0050.00216.92
8.0.190.0080.00016.92
8.0.180.0070.00017.02
8.0.170.0050.00316.88
8.0.160.0000.00716.84
8.0.150.0080.00017.00
8.0.140.0080.00016.96
8.0.130.0000.00513.42
8.0.120.0040.00416.94
8.0.110.0000.00716.95
8.0.100.0000.00716.84
8.0.90.0000.00716.98
8.0.80.0060.00917.02
8.0.70.0040.00416.98
8.0.60.0000.00816.89
8.0.50.0040.00416.84
8.0.30.0120.00717.04
8.0.20.0120.00817.40
8.0.10.0050.00216.93
8.0.00.0050.01316.87
7.4.330.0000.00515.15
7.4.320.0000.00716.59
7.4.300.0000.00616.59
7.4.290.0040.00416.52
7.4.280.0000.00716.49
7.4.270.0030.00316.57
7.4.260.0030.00316.55
7.4.250.0030.00516.33
7.4.240.0020.00516.58
7.4.230.0030.00316.46
7.4.220.0080.01016.58
7.4.210.0070.01016.63
7.4.200.0070.00016.71
7.4.190.0070.00016.74
7.4.160.0130.00316.38
7.4.150.0030.01417.40
7.4.140.0130.00417.86
7.4.130.0120.00816.53
7.4.120.0130.00516.61
7.4.110.0130.00416.60
7.4.100.0070.01016.54
7.4.90.0110.00716.60
7.4.80.0070.01419.39
7.4.70.0090.00616.59
7.4.60.0060.01016.64
7.4.50.0060.00316.51
7.4.40.0060.00922.77
7.4.30.0070.01116.44
7.4.00.0030.01515.14
7.3.330.0050.00013.32
7.3.320.0020.00213.13
7.3.310.0030.00316.25
7.3.300.0030.00316.29
7.3.290.0070.00716.36
7.3.280.0040.01216.33
7.3.270.0030.01417.40
7.3.260.0100.00716.49
7.3.250.0100.01016.45
7.3.240.0110.01016.35
7.3.230.0050.01116.39
7.3.210.0130.00316.28
7.3.200.0120.00416.49
7.3.190.0060.01516.40
7.3.180.0090.00616.27
7.3.170.0030.01416.52
7.3.160.0030.01216.38
7.3.120.0070.01015.10
7.2.330.0070.01016.26
7.2.320.0140.00416.70
7.2.310.0100.01516.71
7.2.300.0140.00316.83
7.2.290.0070.01016.70
7.2.60.0040.00716.78
7.2.00.0000.01419.37
7.1.200.0030.01015.66
7.1.100.0090.00618.29
7.1.70.0040.00417.14
7.1.60.0180.00719.82
7.1.50.0000.01816.92
7.1.00.0070.07022.31
7.0.200.0040.00416.98
7.0.140.0070.07021.91
7.0.80.0100.03719.91
7.0.70.0130.03319.87
7.0.60.0070.04320.07
7.0.50.0070.04320.30
7.0.40.0030.04020.10
7.0.30.0070.04020.05
7.0.20.0000.04720.18
7.0.10.0100.03720.12
7.0.00.0000.04320.03
5.6.280.0000.07720.92
5.6.230.0100.03720.49
5.6.220.0130.03320.66
5.6.210.0000.04020.61
5.6.200.0030.04321.10
5.6.190.0070.04020.92
5.6.180.0000.04321.04
5.6.170.0070.03720.96
5.6.160.0070.03021.02
5.6.150.0100.05321.03
5.6.140.0000.04321.18
5.6.130.0000.04021.03
5.6.120.0000.05721.12
5.6.110.0070.08720.95
5.6.100.0030.08721.04
5.6.90.0100.05320.99
5.6.80.0100.05320.33
5.6.70.0030.04720.43
5.6.60.0100.08020.49
5.6.50.0100.07320.35
5.6.40.0070.07720.48
5.6.30.0130.07320.50
5.6.20.0030.08320.37
5.6.10.0070.07320.48
5.6.00.0170.06720.46
5.5.370.0000.04020.43
5.5.360.0100.03720.45
5.5.350.0070.03720.40
5.5.340.0070.04320.79
5.5.330.0070.04020.79
5.5.320.0000.04320.74
5.5.310.0070.03720.65
5.5.300.0070.04020.80
5.5.290.0030.04320.64
5.5.280.0100.06720.84
5.5.270.0100.08020.64
5.5.260.0170.07720.87
5.5.250.0000.04720.66
5.5.240.0100.07320.16
5.5.230.0070.04720.16
5.5.220.0130.07720.26
5.5.210.0170.07020.31
5.5.200.0070.08320.15
5.5.190.0030.08720.14
5.5.180.0030.05320.16
5.5.160.0030.07720.22
5.5.150.0070.07720.18
5.5.140.0170.06320.11
5.5.130.0070.07720.24
5.5.120.0100.07020.11
5.5.110.0130.07720.25
5.5.100.0000.05720.16
5.5.90.0070.07320.05
5.5.80.0070.04320.11
5.5.70.0100.07320.05
5.5.60.0030.08320.16
5.5.50.0130.04020.15
5.5.40.0100.07320.05
5.5.30.0030.06320.14
5.5.20.0030.04720.03
5.5.10.0100.06020.07
5.5.00.0130.04320.03
5.4.450.0100.07719.23
5.4.440.0100.04019.18
5.4.430.0100.07719.41
5.4.420.0100.07319.37
5.4.410.0170.07319.04
5.4.400.0100.07019.11
5.4.390.0070.06718.89
5.4.380.0200.05319.10
5.4.370.0130.06719.04
5.4.360.0100.07019.13
5.4.350.0030.04019.13
5.4.340.0070.05019.04
5.4.320.0070.08019.13
5.4.310.0130.05019.04
5.4.300.0000.05319.23
5.4.290.0070.07719.13
5.4.280.0030.04718.95
5.4.270.0170.06319.12
5.4.260.0000.05019.13
5.4.250.0000.07019.07
5.4.240.0130.06719.15
5.4.230.0000.07719.12
5.4.220.0130.07718.86
5.4.210.0030.08019.03
5.4.200.0170.06019.15
5.4.190.0070.05019.04
5.4.180.0070.08319.04
5.4.170.0100.06718.89
5.4.160.0130.07018.98
5.4.150.0000.06319.00
5.4.140.0130.07016.49
5.4.130.0100.05316.38
5.4.120.0100.06316.38
5.4.110.0030.07316.38
5.4.100.0070.07316.48
5.4.90.0070.06716.40
5.4.80.0100.03016.38
5.4.70.0070.06016.39
5.4.60.0130.07316.40
5.4.50.0100.07316.40
5.4.40.0030.08016.39
5.4.30.0030.03716.32
5.4.20.0030.06016.30
5.4.10.0030.07016.41
5.4.00.0100.04715.77
5.3.290.0170.05714.59
5.3.280.0130.03714.53
5.3.270.0030.08014.67
5.3.260.0000.04314.73
5.3.250.0100.06314.73
5.3.240.0070.08014.64
5.3.230.0070.07714.59
5.3.220.0030.05014.54
5.3.210.0170.06714.55
5.3.200.0030.04714.62
5.3.190.0100.06014.64
5.3.180.0070.04014.60
5.3.170.0100.07714.68
5.3.160.0070.07714.62
5.3.150.0070.07314.50
5.3.140.0070.05314.49
5.3.130.0070.05014.54
5.3.120.0030.04014.55
5.3.110.0000.08014.61
5.3.100.0100.07013.98
5.3.90.0170.06314.09
5.3.80.0100.08013.91
5.3.70.0070.07713.91
5.3.60.0100.07014.09
5.3.50.0070.06714.06
5.3.40.0100.06014.00
5.3.30.0030.08013.82
5.3.20.0100.04713.69
5.3.10.0000.05313.68
5.3.00.0130.06313.76
5.2.170.0000.06312.93
5.2.160.0070.06012.93
5.2.150.0030.06712.93
5.2.140.0070.05712.93
5.2.130.0030.06712.93
5.2.120.0000.03312.93
5.2.110.0100.04712.93
5.2.100.0130.05312.93
5.2.90.0030.06312.93
5.2.80.0100.05312.93
5.2.70.0030.04312.93
5.2.60.0100.05712.93
5.2.50.0170.06012.93
5.2.40.0130.05712.93
5.2.30.0100.03012.93
5.2.20.0070.03712.93
5.2.10.0170.03712.93
5.2.00.0000.05312.93
5.1.60.0030.05312.93
5.1.50.0030.03012.93
5.1.40.0030.03012.93
5.1.30.0070.02312.93
5.1.20.0070.02312.93
5.1.10.0070.05312.93
5.1.00.0070.04712.93
5.0.50.0070.03712.93
5.0.40.0070.04012.93
5.0.30.0000.05012.93
5.0.20.0070.04012.93
5.0.10.0070.03712.93
5.0.00.0000.05712.93
4.4.90.0000.01712.93
4.4.80.0000.03312.93
4.4.70.0070.03012.93
4.4.60.0000.04012.93
4.4.50.0000.02712.93
4.4.40.0000.04012.93
4.4.30.0000.02012.93
4.4.20.0030.01312.93
4.4.10.0000.03712.93
4.4.00.0030.05012.93
4.3.110.0030.01712.93
4.3.100.0070.01312.93
4.3.90.0000.02012.93
4.3.80.0000.03012.93
4.3.70.0030.03312.93
4.3.60.0030.03312.93
4.3.50.0070.02012.93
4.3.40.0030.03312.93
4.3.30.0000.01712.93
4.3.20.0000.02712.93
4.3.10.0030.01712.93
4.3.00.0000.01712.93

preferences:
44.9 ms | 401 KiB | 5 Q