3v4l.org

run code in 300+ PHP versions simultaneously
<?php /* Challenge 2: Implement AnswerInterface and get Question to echo "4". */ 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 4; } } // end editing here 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; } } } $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)
8.3.40.0070.01018.72
8.3.30.0140.00019.04
8.3.20.0080.00020.20
8.3.10.0070.00022.09
8.3.00.0080.00022.46
8.2.170.0070.01322.96
8.2.160.0130.00720.93
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0040.00417.75
8.2.110.0000.00922.29
8.2.100.0070.00417.78
8.2.90.0050.00319.02
8.2.80.0040.00418.03
8.2.70.0080.00017.50
8.2.60.0080.00317.66
8.2.50.0040.00418.07
8.2.40.0070.00318.03
8.2.30.0000.00718.16
8.2.20.0030.00617.72
8.2.10.0000.00817.67
8.2.00.0050.00317.71
8.1.270.0070.00021.81
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0110.00022.01
8.1.230.0040.00822.75
8.1.220.0000.00817.74
8.1.210.0080.00018.77
8.1.200.0030.00617.36
8.1.190.0000.00717.52
8.1.180.0050.00318.10
8.1.170.0030.00518.33
8.1.160.0000.00722.01
8.1.150.0070.00018.63
8.1.140.0000.00717.35
8.1.130.0080.00017.83
8.1.120.0000.00717.37
8.1.110.0000.00717.47
8.1.100.0040.00417.41
8.1.90.0040.00417.32
8.1.80.0000.00717.50
8.1.70.0000.00717.43
8.1.60.0030.00617.56
8.1.50.0040.00417.57
8.1.40.0000.00717.47
8.1.30.0060.00317.58
8.1.20.0000.00717.56
8.1.10.0040.00417.52
8.1.00.0000.00817.52
8.0.300.0000.00718.77
8.0.290.0000.00717.18
8.0.280.0030.00318.45
8.0.270.0040.00417.18
8.0.260.0060.00016.87
8.0.250.0000.00716.92
8.0.240.0020.00517.07
8.0.230.0070.00016.98
8.0.220.0000.00616.95
8.0.210.0030.00316.89
8.0.200.0030.00316.99
8.0.190.0000.00817.00
8.0.180.0070.00016.97
8.0.170.0080.00016.98
8.0.160.0040.00416.91
8.0.150.0080.00016.85
8.0.140.0030.00316.95
8.0.130.0030.00313.38
8.0.120.0040.00416.90
8.0.110.0040.00416.93
8.0.100.0040.00416.91
8.0.90.0020.00516.81
8.0.80.0150.00416.90
8.0.70.0030.00517.05
8.0.60.0000.00816.82
8.0.50.0000.00716.85
8.0.30.0110.00917.08
8.0.20.0120.00617.42
8.0.10.0050.00216.96
8.0.00.0100.01116.77
7.4.330.0030.00315.14
7.4.320.0000.00616.60
7.4.300.0060.00016.51
7.4.290.0030.00516.45
7.4.280.0000.00716.54
7.4.270.0050.00216.61
7.4.260.0110.00016.41
7.4.250.0060.00316.48
7.4.240.0050.00316.61
7.4.230.0030.00316.41
7.4.220.0120.00616.63
7.4.210.0050.01216.60
7.4.200.0040.00416.67
7.4.190.0000.00716.77
7.4.160.0120.00316.53
7.4.150.0080.00817.40
7.4.140.0110.01017.86
7.4.130.0110.00816.55
7.4.120.0090.00716.57
7.4.110.0120.01216.67
7.4.100.0140.00316.31
7.4.90.0110.00716.41
7.4.80.0120.00919.39
7.4.70.0100.00716.66
7.4.60.0100.01016.53
7.4.50.0040.00416.65
7.4.40.0100.00322.77
7.4.30.0040.01416.64
7.4.00.0150.00015.04
7.3.330.0040.00413.30
7.3.320.0030.00213.36
7.3.310.0000.00716.34
7.3.300.0060.00316.37
7.3.290.0070.00616.32
7.3.280.0100.00416.35
7.3.270.0100.01317.40
7.3.260.0080.00816.42
7.3.250.0100.00616.56
7.3.240.0040.01316.54
7.3.230.0050.01416.39
7.3.210.0080.00816.32
7.3.200.0090.00919.39
7.3.190.0070.01116.58
7.3.180.0070.01016.30
7.3.170.0070.01116.33
7.3.160.0100.00616.42
7.3.120.0100.00315.07
7.3.10.0100.00316.66
7.3.00.0030.01016.62
7.2.330.0000.01716.61
7.2.320.0090.01216.71
7.2.310.0110.01316.46
7.2.300.0040.01616.42
7.2.290.0150.00616.66
7.2.130.0060.00616.65
7.2.120.0090.00617.02
7.2.110.0040.00716.86
7.2.100.0040.00816.90
7.2.90.0000.00916.78
7.2.80.0020.01216.84
7.2.70.0090.00316.80
7.2.60.0050.00616.85
7.2.50.0000.01216.89
7.2.40.0040.00816.91
7.2.30.0000.01416.94
7.2.20.0030.00916.94
7.2.10.0030.00616.93
7.2.00.0030.01118.04
7.1.250.0100.00015.98
7.1.200.0000.00815.88
7.1.100.0060.00918.02
7.1.70.0000.00717.24
7.1.60.0000.01619.82
7.1.50.0100.01416.98
7.1.00.0000.08022.33
7.0.200.0050.00216.54
7.0.140.0030.07722.11
7.0.100.0400.07019.94
7.0.90.0300.07719.86
7.0.80.0400.06719.93
7.0.70.0430.05319.93
7.0.60.0330.07319.78
7.0.50.0230.09020.34
7.0.40.0030.08319.95
7.0.30.0070.08020.13
7.0.20.0030.09020.09
7.0.10.0170.07020.04
7.0.00.0000.09320.03
5.6.280.0070.07320.91
5.6.250.0130.08020.57
5.6.240.0130.08320.64
5.6.230.0100.04020.66
5.6.220.0070.06320.52
5.6.210.0070.08020.66
5.6.200.0030.06720.97
5.6.190.0170.07020.96
5.6.180.0070.05320.95
5.6.170.0130.07721.02
5.6.160.0130.07721.04
5.6.150.0070.06321.05
5.6.140.0030.09021.11
5.6.130.0100.08020.96
5.6.120.0100.08021.06
5.6.110.0070.05021.17
5.6.100.0100.08020.95
5.6.90.0030.08721.02
5.6.80.0130.06720.34
5.6.70.0030.05320.55
5.6.60.0130.07320.54
5.6.50.0100.06720.43
5.6.40.0030.08720.50
5.6.30.0070.07320.45
5.6.20.0200.07320.38
5.6.10.0070.07720.42
5.6.00.0070.08320.36
5.5.380.0070.07720.36
5.5.370.0000.08020.37
5.5.360.0130.04020.35
5.5.350.0070.08720.46
5.5.340.0000.05020.74
5.5.330.0100.07320.90
5.5.320.0000.09020.93
5.5.310.0070.05320.80
5.5.300.0030.07020.80
5.5.290.0100.08320.76
5.5.280.0030.07320.65
5.5.270.0000.08020.91
5.5.260.0030.09720.82
5.5.250.0170.07020.57
5.5.240.0000.06720.22
5.5.230.0030.08320.03
5.5.220.0000.07720.27
5.5.210.0100.06720.14
5.5.200.0130.07320.20
5.5.190.0000.05320.00
5.5.180.0130.06320.25
5.5.160.0100.07020.18
5.5.150.0030.08020.21
5.5.140.0100.07320.24
5.5.130.0100.06020.25
5.5.120.0070.06020.08
5.5.110.0070.08020.17
5.5.100.0030.05320.13
5.5.90.0100.07020.13
5.5.80.0130.06320.16
5.5.70.0030.04720.06
5.5.60.0100.07320.12
5.5.50.0130.06020.06
5.5.40.0270.05020.05
5.5.30.0070.04319.93
5.5.20.0000.08719.96
5.5.10.0100.04319.98
5.5.00.0030.03720.03
5.4.450.0070.05719.37
5.4.440.0070.04319.38
5.4.430.0100.08019.32
5.4.420.0070.08719.37
5.4.410.0070.07319.22
5.4.400.0030.08019.05
5.4.390.0070.07718.91
5.4.380.0070.05019.13
5.4.370.0170.07019.13
5.4.360.0070.07018.92
5.4.350.0200.06719.14
5.4.340.0100.05319.05
5.4.320.0070.07319.13
5.4.310.0100.07018.87
5.4.300.0070.07319.21
5.4.290.0130.06319.16
5.4.280.0070.08019.09
5.4.270.0100.07318.94
5.4.260.0070.06018.89
5.4.250.0070.03719.02
5.4.240.0100.06718.84
5.4.230.0100.04019.04
5.4.220.0170.04719.04
5.4.210.0100.07318.87
5.4.200.0030.04019.20
5.4.190.0100.03719.22
5.4.180.0100.07019.23
5.4.170.0130.07019.15
5.4.160.0000.03718.88
5.4.150.0170.05319.06
5.4.140.0070.08016.59
5.4.130.0130.06716.45
5.4.120.0000.05316.42
5.4.110.0030.04316.39
5.4.100.0130.06316.52
5.4.90.0130.06716.44
5.4.80.0030.07016.43
5.4.70.0100.06716.51
5.4.60.0100.06716.30
5.4.50.0070.07716.47
5.4.40.0030.07716.37
5.4.30.0100.07316.38
5.4.20.0030.07016.43
5.4.10.0000.04716.33
5.4.00.0070.06715.71
5.3.290.0030.07714.72
5.3.280.0100.06314.70
5.3.270.0070.07014.64
5.3.260.0000.08014.73
5.3.250.0070.04314.61
5.3.240.0070.07714.60
5.3.230.0100.07314.66
5.3.220.0100.07314.60
5.3.210.0030.07714.66
5.3.200.0000.04714.71
5.3.190.0130.07014.59
5.3.180.0130.05714.68
5.3.170.0070.03314.50
5.3.160.0030.08014.63
5.3.150.0030.07714.63
5.3.140.0100.07014.54
5.3.130.0030.05314.53
5.3.120.0070.06714.64
5.3.110.0100.04314.57
5.3.100.0000.04714.10
5.3.90.0070.08014.02
5.3.80.0130.05714.00
5.3.70.0030.06314.14
5.3.60.0070.05714.04
5.3.50.0100.07014.06
5.3.40.0100.06014.07
5.3.30.0130.06713.93
5.3.20.0130.06313.62
5.3.10.0130.06013.55
5.3.00.0070.03313.59
5.2.170.0070.05312.85
5.2.160.0100.05712.85
5.2.150.0030.06712.85
5.2.140.0070.05012.85
5.2.130.0070.04312.85
5.2.120.0100.03712.85
5.2.110.0030.03312.85
5.2.100.0100.05712.85
5.2.90.0100.02712.85
5.2.80.0030.05712.85
5.2.70.0030.06012.85
5.2.60.0100.05712.85
5.2.50.0070.06012.85
5.2.40.0100.05712.85
5.2.30.0070.06012.85
5.2.20.0100.03012.85
5.2.10.0030.04712.85
5.2.00.0070.04012.85
5.1.60.0030.05312.85
5.1.50.0030.02712.85
5.1.40.0070.05712.85
5.1.30.0030.03012.85
5.1.20.0070.05712.85
5.1.10.0000.04312.85
5.1.00.0070.04712.85
5.0.50.0000.03312.85
5.0.40.0030.04712.85
5.0.30.0030.04312.85
5.0.20.0000.02712.85
5.0.10.0030.04312.85
5.0.00.0070.04712.85
4.4.90.0030.02012.85
4.4.80.0000.01712.85
4.4.70.0000.03312.85
4.4.60.0000.03712.85
4.4.50.0030.03712.85
4.4.40.0000.05312.85
4.4.30.0000.03712.85
4.4.20.0000.03312.85
4.4.10.0030.03712.85
4.4.00.0030.03312.85
4.3.110.0000.03312.85
4.3.100.0000.01712.85
4.3.90.0030.04012.85
4.3.80.0000.03012.85
4.3.70.0070.02712.85
4.3.60.0000.03712.85
4.3.50.0030.02012.85
4.3.40.0000.04012.85
4.3.30.0000.04012.85
4.3.20.0030.03312.85
4.3.10.0000.02712.85
4.3.00.0000.02312.85

preferences:
48.58 ms | 400 KiB | 5 Q