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 { protected $answer; public function __construct() { $this->answer = "4"; } public function __toString() { return $this->answer; } public function get() { return $this; } public function the() { return $this; } public function answer() { return $this; } } // 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)
8.3.60.0200.00018.43
8.3.50.0140.00421.15
8.3.40.0000.01418.79
8.3.30.0070.00718.70
8.3.20.0070.00718.90
8.3.10.0050.00321.07
8.3.00.0000.00819.79
8.2.180.0060.01218.42
8.2.170.0100.00622.96
8.2.160.0030.01020.52
8.2.150.0030.00525.66
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00421.05
8.2.110.0100.00020.52
8.2.100.0080.00417.84
8.2.90.0040.00419.09
8.2.80.0000.00817.97
8.2.70.0000.01017.47
8.2.60.0030.00518.05
8.2.50.0040.00418.07
8.2.40.0050.00218.16
8.2.30.0000.00721.29
8.2.20.0020.00717.54
8.2.10.0040.00417.68
8.2.00.0050.00317.67
8.1.280.0100.00325.92
8.1.270.0040.00423.99
8.1.260.0100.00326.35
8.1.250.0000.00828.09
8.1.240.0060.00322.46
8.1.230.0100.00020.87
8.1.220.0060.00318.77
8.1.210.0080.00019.03
8.1.200.0100.00017.21
8.1.190.0040.00417.53
8.1.180.0040.00418.10
8.1.170.0090.00018.64
8.1.160.0000.00718.88
8.1.150.0040.00418.61
8.1.140.0030.00517.51
8.1.130.0030.00317.76
8.1.120.0000.00717.48
8.1.110.0000.00717.46
8.1.100.0030.00517.48
8.1.90.0040.00417.46
8.1.80.0040.00417.35
8.1.70.0070.00017.40
8.1.60.0060.00317.56
8.1.50.0050.00217.37
8.1.40.0040.00417.51
8.1.30.0050.00217.68
8.1.20.0000.00817.70
8.1.10.0000.00717.63
8.1.00.0030.00617.56
8.0.300.0030.00619.98
8.0.290.0030.00317.05
8.0.280.0030.00318.38
8.0.270.0040.00417.32
8.0.260.0000.00616.89
8.0.250.0000.00817.01
8.0.240.0000.00816.91
8.0.230.0040.00417.06
8.0.220.0070.00016.84
8.0.210.0070.00016.87
8.0.200.0070.00016.94
8.0.190.0000.00817.09
8.0.180.0000.00816.94
8.0.170.0040.00416.95
8.0.160.0000.00716.99
8.0.150.0060.00216.86
8.0.140.0000.00916.82
8.0.130.0030.00313.48
8.0.120.0040.00416.93
8.0.110.0000.00716.87
8.0.100.0040.00417.00
8.0.90.0040.00417.00
8.0.80.0000.02116.95
8.0.70.0040.00417.03
8.0.60.0000.00716.86
8.0.50.0000.00716.86
8.0.30.0120.00717.00
8.0.20.0090.00917.40
8.0.10.0040.00417.09
8.0.00.0080.01316.91
7.4.330.0000.00616.67
7.4.320.0030.00316.58
7.4.300.0060.00016.52
7.4.290.0040.00416.65
7.4.280.0000.00616.55
7.4.270.0040.00416.48
7.4.260.0030.00313.28
7.4.250.0050.00316.52
7.4.240.0000.00716.37
7.4.230.0030.00316.44
7.4.220.0090.00916.54
7.4.210.0100.00716.57
7.4.200.0020.00516.40
7.4.190.0000.00716.55
7.4.160.0100.00716.61
7.4.150.0060.01217.40
7.4.140.0070.01217.86
7.4.130.0080.01416.51
7.4.120.0090.01116.52
7.4.110.0150.00316.43
7.4.100.0140.01016.50
7.4.90.0140.00316.48
7.4.80.0090.00919.39
7.4.70.0060.01216.39
7.4.60.0040.01216.59
7.4.50.0000.00816.39
7.4.40.0100.00322.77
7.4.30.0170.00016.73
7.4.00.0050.01214.98
7.3.330.0050.00013.18
7.3.320.0020.00213.28
7.3.310.0030.00316.39
7.3.300.0040.00416.32
7.3.290.0040.01116.28
7.3.280.0080.00916.38
7.3.270.0170.00717.40
7.3.260.0180.01118.24
7.3.250.0080.01216.26
7.3.240.0080.01516.48
7.3.230.0080.00816.39
7.3.210.0110.00816.37
7.3.200.0100.00619.39
7.3.190.0060.01116.32
7.3.180.0030.01216.36
7.3.170.0100.00616.46
7.3.160.0150.00616.57
7.3.120.0020.01514.95
7.3.110.0030.01514.93
7.3.100.0080.00814.54
7.3.90.0000.01415.03
7.3.80.0060.00614.65
7.3.70.0070.01014.40
7.3.60.0100.00614.86
7.3.50.0040.00714.64
7.3.40.0110.00714.92
7.3.30.0000.01514.59
7.3.20.0070.00316.54
7.3.10.0160.00016.66
7.3.00.0080.00516.68
7.2.330.0070.01116.50
7.2.320.0120.00616.61
7.2.310.0070.01116.82
7.2.300.0130.00316.66
7.2.290.0170.00016.42
7.2.250.0030.01314.81
7.2.240.0140.00715.27
7.2.230.0040.01114.66
7.2.220.0030.00915.24
7.2.210.0090.00914.78
7.2.200.0030.01014.95
7.2.190.0060.01315.18
7.2.180.0060.01314.96
7.2.170.0030.01715.05
7.2.00.0090.00619.09
7.1.330.0070.00715.48
7.1.320.0100.00315.84
7.1.310.0120.00615.65
7.1.300.0040.01115.85
7.1.290.0030.01415.73
7.1.280.0060.01316.00
7.1.270.0070.00715.78
7.1.260.0090.00615.48
7.1.100.0060.00618.15
7.1.70.0070.00017.23
7.1.60.0100.01319.24
7.1.50.0120.01216.63
7.1.00.0000.03722.28
7.0.200.0320.00414.82
7.0.140.0070.07022.12
7.0.100.0230.08320.02
7.0.90.0470.08019.82
7.0.80.0400.09019.84
7.0.70.0470.07319.89
7.0.60.0370.08020.02
7.0.50.0430.08020.30
7.0.40.0030.08720.00
7.0.30.0130.07320.07
7.0.20.0070.08719.98
7.0.10.0030.09020.11
7.0.00.0170.05719.98
5.6.280.0030.07321.12
5.6.250.0100.08320.52
5.6.240.0070.08020.56
5.6.230.0030.04720.46
5.6.220.0100.07720.53
5.6.210.0070.04720.45
5.6.200.0030.08020.90
5.6.190.0070.08320.98
5.6.180.0000.08720.99
5.6.170.0100.06320.91
5.6.160.0070.08720.89
5.6.150.0070.07320.98
5.6.140.0030.07321.04
5.6.130.0030.06321.00
5.6.120.0100.06721.12
5.6.110.0200.07320.91
5.6.100.0170.07321.02
5.6.90.0130.07720.98
5.6.80.0070.07320.28
5.6.70.0070.08020.35
5.6.60.0070.08020.35
5.6.50.0030.07020.39
5.6.40.0070.07720.25
5.6.30.0130.07320.34
5.6.20.0100.06020.39
5.6.10.0200.05720.43
5.6.00.0030.04720.38
5.5.380.0070.07320.45
5.5.370.0100.07020.36
5.5.360.0070.08720.35
5.5.350.0070.08020.39
5.5.340.0200.06720.85
5.5.330.0100.05720.82
5.5.320.0070.06720.85
5.5.310.0100.08720.79
5.5.300.0100.07720.82
5.5.290.0170.07020.73
5.5.280.0130.08020.79
5.5.270.0100.05020.71
5.5.260.0030.09020.81
5.5.250.0070.07020.69
5.5.240.0000.08320.18
5.5.230.0000.08020.23
5.5.220.0070.04720.22
5.5.210.0030.06020.10
5.5.200.0070.07020.20
5.5.190.0030.05320.19
5.5.180.0100.08019.96
5.5.160.0100.08020.20
5.5.150.0030.07320.19
5.5.140.0130.08020.24
5.5.130.0030.04020.07
5.5.120.0100.08320.19
5.5.110.0100.06320.10
5.5.100.0070.07720.09
5.5.90.0030.07020.11
5.5.80.0100.07020.11
5.5.70.0030.08720.11
5.5.60.0000.06720.10
5.5.50.0100.08019.85
5.5.40.0100.06319.98
5.5.30.0130.07020.12
5.5.20.0130.06320.08
5.5.10.0070.06719.93
5.5.00.0130.07319.97
5.4.450.0170.06719.46
5.4.440.0030.10019.19
5.4.430.0000.06719.52
5.4.420.0100.07719.37
5.4.410.0070.05319.04
5.4.400.0070.07018.96
5.4.390.0070.06019.13
5.4.380.0070.05719.23
5.4.370.0070.07319.09
5.4.360.0000.06319.18
5.4.350.0030.08319.04
5.4.340.0030.04719.21
5.4.320.0100.04318.87
5.4.310.0070.08019.14
5.4.300.0070.07718.94
5.4.290.0070.05018.84
5.4.280.0030.05319.12
5.4.270.0030.07719.12
5.4.260.0030.06319.03
5.4.250.0070.06019.08
5.4.240.0030.06318.90
5.4.230.0070.04019.02
5.4.220.0070.05719.08
5.4.210.0030.07018.83
5.4.200.0130.07719.02
5.4.190.0100.05719.04
5.4.180.0070.08319.03
5.4.170.0070.07718.89
5.4.160.0030.07319.21
5.4.150.0100.07719.10
5.4.140.0070.07316.43
5.4.130.0170.06016.44
5.4.120.0130.04316.33
5.4.110.0030.04716.38
5.4.100.0100.07316.39
5.4.90.0070.05016.55
5.4.80.0230.05716.36
5.4.70.0070.08016.55
5.4.60.0100.04316.48
5.4.50.0070.07016.40
5.4.40.0100.06316.41
5.4.30.0130.06316.48
5.4.20.0030.07716.36
5.4.10.0100.07316.41
5.4.00.0070.05315.70
5.3.290.0030.04714.70
5.3.280.0030.04714.61
5.3.270.0130.05014.64
5.3.260.0170.06714.60
5.3.250.0130.06314.59
5.3.240.0070.05714.73
5.3.230.0070.04314.73
5.3.220.0030.07314.61
5.3.210.0070.07714.55
5.3.200.0130.05714.59
5.3.190.0000.05014.52
5.3.180.0000.04014.71
5.3.170.0100.07314.63
5.3.160.0030.08014.59
5.3.150.0030.05714.68
5.3.140.0000.04714.69
5.3.130.0030.07714.68
5.3.120.0130.06014.58
5.3.110.0030.07014.57
5.3.100.0000.08014.14
5.3.90.0070.07313.98
5.3.80.0100.04014.06
5.3.70.0030.07714.09
5.3.60.0070.06314.11
5.3.50.0000.07013.87
5.3.40.0000.07313.89
5.3.30.0030.07713.91
5.3.20.0100.07313.64
5.3.10.0030.06013.81
5.3.00.0070.07313.72
5.2.170.0030.04311.27
5.2.160.0000.03311.09
5.2.150.0100.03011.17
5.2.140.0030.06711.07
5.2.130.0030.05011.13
5.2.120.0030.06311.10
5.2.110.0070.05011.23
5.2.100.0030.03711.02
5.2.90.0030.04711.02
5.2.80.0130.05711.11
5.2.70.0000.06711.16
5.2.60.0030.05710.96
5.2.50.0030.06310.93
5.2.40.0070.04311.04
5.2.30.0030.06311.00
5.2.20.0070.04711.02
5.2.10.0100.05310.94
5.2.00.0070.06010.76
5.1.60.0100.04010.02
5.1.50.0030.02710.01
5.1.40.0000.0309.83
5.1.30.0030.05710.27
5.1.20.0030.05310.28
5.1.10.0030.05010.19
5.1.00.0070.05310.08
5.0.50.0100.0408.63
5.0.40.0030.0338.51
5.0.30.0030.0508.29
5.0.20.0070.0238.11
5.0.10.0030.0478.18
5.0.00.0030.0538.23
4.4.90.0000.0237.13
4.4.80.0000.0277.13
4.4.70.0030.0277.13
4.4.60.0000.0237.13
4.4.50.0030.0407.13
4.4.40.0000.0377.13
4.4.30.0030.0337.13
4.4.20.0000.0207.13
4.4.10.0030.0337.13
4.4.00.0030.0337.13
4.3.110.0000.0377.13
4.3.100.0070.0307.13
4.3.90.0030.0337.13
4.3.80.0030.0307.13
4.3.70.0030.0307.13
4.3.60.0100.0237.13
4.3.50.0030.0307.13
4.3.40.0030.0437.13
4.3.30.0000.0377.13
4.3.20.0000.0237.13
4.3.10.0000.0377.13
4.3.00.0030.0307.13

preferences:
43.7 ms | 401 KiB | 5 Q