3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class Thesaurus { protected $synonyms = array( array('wonderful', 'amazing', 'fabulous', 'awesome', 'stunning'), array('look', 'see', 'observe') ); public function lookup($word) { foreach ($this->synonyms as $index => $synonym) { if (in_array(strtolower($word), $synonym)) { unset($synonym[ $index ]); print_r($synonym); exit; return $synonym[ array_rand($synonym) ]; } } return $word; } } class Transformer { protected $thesaurus; public function __construct(Thesaurus $thesaurus) { $this->thesaurus = $thesaurus; } public function transform($string) { foreach (str_word_count($string, 1) as $word) { $string = $this->replace($word, $this->thesaurus->lookup($word), $string); } return $string; } private function replace($needle, $replacement, $haystack) { return preg_replace( '~' . preg_quote($needle, '~') . '~i', $replacement, $haystack, 1 ); } } $transformer = new Transformer(new Thesaurus); foreach (range(1, 20) as $index) { echo $transformer->transform('This is my great description. It really is wonderful. Look how wonderful it is.'), PHP_EOL; }

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).
Note: hhvm uses a JIT which only kicks in after a few runs. Since we run scripts only once, hhvm always runs slower.

VersionSystem time (s)User time (s)Memory (MiB)
7.2.00.0100.00619.82
7.1.100.0060.00918.01
7.1.70.0040.00417.42
7.1.60.0030.01219.70
7.1.50.0120.01217.21
7.1.00.0070.07322.45
7.0.200.0040.00716.75
7.0.140.0070.07021.95
7.0.100.0170.07720.20
7.0.90.0130.07319.94
7.0.80.0130.07320.01
7.0.70.0070.08019.95
7.0.60.0070.08020.13
7.0.50.0130.07720.33
7.0.40.0100.08320.18
7.0.30.0130.05320.04
7.0.20.0100.06320.11
7.0.10.0070.08320.13
7.0.00.0130.07720.16
5.6.250.0030.05720.60
5.6.240.0100.05020.65
5.6.230.0130.07020.77
5.6.220.0070.07720.69
5.6.210.0030.08320.62
5.6.200.0100.08020.98
5.6.190.0200.07320.95
5.6.180.0170.07321.04
5.6.170.0200.07021.20
5.6.160.0030.08720.96
5.6.150.0170.07321.02
5.6.140.0030.08021.00
5.6.130.0070.05321.15
5.6.120.0170.06720.97
5.6.110.0070.05021.11
5.6.100.0000.08720.95
5.6.90.0030.08721.10
5.6.80.0100.05720.46
5.6.70.0000.07320.33
5.6.60.0130.07020.41
5.6.50.0100.08020.34
5.6.40.0130.04020.48
5.6.30.0130.07020.43
5.6.20.0000.08720.45
5.6.10.0070.04320.38
5.6.00.0070.07320.29
5.5.380.0100.04020.41
5.5.370.0070.07020.44
5.5.360.0100.07720.50
5.5.350.0070.05020.44
5.5.340.0070.07320.79
5.5.330.0100.08320.93
5.5.320.0070.06020.79
5.5.310.0100.07720.84
5.5.300.0100.07320.82
5.5.290.0030.08020.78
5.5.280.0130.07720.94
5.5.270.0100.08020.73
5.5.260.0130.08020.91
5.5.250.0130.07020.66
5.5.240.0170.06720.21
5.5.230.0130.08020.32
5.5.220.0130.07720.15
5.5.210.0070.04720.29
5.5.200.0130.06720.14
5.5.190.0000.06720.17
5.5.180.0170.07020.23
5.5.160.0170.07020.27
5.5.150.0200.05720.13
5.5.140.0070.07320.29
5.5.130.0100.07020.13
5.5.120.0030.05720.19
5.5.110.0100.08020.19
5.5.100.0200.06319.97
5.5.90.0270.03720.08
5.5.80.0100.07320.09
5.5.70.0270.03720.04
5.5.60.0030.07720.02
5.5.50.0070.06020.11
5.5.40.0130.06720.08
5.5.30.0170.06719.91
5.5.20.0130.05720.07
5.5.10.0070.07720.09
5.5.00.0100.07320.07
5.4.450.0030.07019.45
5.4.440.0130.07719.56
5.4.430.0130.04719.46
5.4.420.0100.07719.37
5.4.410.0070.07719.07
5.4.400.0070.07719.23
5.4.390.0100.07319.21
5.4.380.0130.04019.13
5.4.370.0000.08019.14
5.4.360.0000.06019.21
5.4.350.0100.07319.21
5.4.340.0000.08019.24
5.4.320.0030.05318.88
5.4.310.0130.07318.95
5.4.300.0070.07019.23
5.4.290.0030.07719.23
5.4.280.0100.06719.02
5.4.270.0070.08019.05
5.4.260.0070.05719.18
5.4.250.0030.08019.04
5.4.240.0100.05318.87
5.4.230.0030.08319.12
5.4.220.0100.08019.20
5.4.210.0000.07718.94
5.4.200.0030.05319.16
5.4.190.0130.07319.04
5.4.180.0030.06018.84
5.4.170.0130.06719.03
5.4.160.0130.07018.88
5.4.150.0070.08019.01
5.4.140.0070.05716.46
5.4.130.0100.06716.41
5.4.120.0100.06316.46
5.4.110.0070.07016.54
5.4.100.0070.05716.34
5.4.90.0100.07016.45
5.4.80.0130.06716.50
5.4.70.0130.06316.54
5.4.60.0030.07316.26
5.4.50.0130.04016.32
5.4.40.0030.06316.58
5.4.30.0170.06316.47
5.4.20.0070.06716.36
5.4.10.0100.07016.45
5.4.00.0000.04715.87
5.3.290.0030.07714.64
5.3.280.0100.07714.59
5.3.270.0070.07714.60
5.3.260.0030.07014.58
5.3.250.0000.08014.75
5.3.240.0070.07714.60
5.3.230.0100.07314.60
5.3.220.0030.07714.59
5.3.210.0200.06314.56
5.3.200.0100.07314.56
5.3.190.0070.05714.68
5.3.180.0130.03314.53
5.3.170.0070.04314.62
5.3.160.0100.07014.51
5.3.150.0000.07714.69
5.3.140.0070.08014.63
5.3.130.0030.07314.68
5.3.120.0000.07714.51
5.3.110.0100.06314.59
5.3.100.0030.07014.11
5.3.90.0000.04713.98
5.3.80.0030.05014.18
5.3.70.0100.06714.02
5.3.60.0100.06714.09
5.3.50.0100.06013.88
5.3.40.0100.06314.03
5.3.30.0030.06714.04
5.3.20.0000.08313.74
5.3.10.0030.06013.67
5.3.00.0070.07313.68
5.2.170.0000.06711.27
5.2.160.0030.06311.08
5.2.150.0070.04011.07
5.2.140.0070.06011.28
5.2.130.0070.04711.03
5.2.120.0030.05311.00
5.2.110.0000.04311.14
5.2.100.0030.05311.21
5.2.90.0030.06311.18
5.2.80.0070.05711.13
5.2.70.0030.06711.17
5.2.60.0030.06711.13
5.2.50.0000.07011.13
5.2.40.0030.06010.95
5.2.30.0100.05311.09
5.2.20.0070.05710.93
5.2.10.0130.05310.86
5.2.00.0100.04010.66
5.1.60.0070.05010.03
5.1.50.0070.0479.87
5.1.40.0070.05010.09
5.1.30.0030.03310.27
5.1.20.0100.05310.29
5.1.10.0030.05310.08
5.1.00.0070.05010.13
5.0.50.0030.0509.80
5.0.40.0070.0339.80
5.0.30.0100.0539.80
5.0.20.0030.0439.80
5.0.10.0070.0409.80
5.0.00.0070.0579.80
4.4.90.0000.0379.80
4.4.80.0070.0279.80
4.4.70.0000.0409.80
4.4.60.0000.0409.80
4.4.50.0000.0409.80
4.4.40.0070.0439.80
4.4.30.0070.0339.80
4.4.20.0130.0239.80
4.4.10.0070.0309.80
4.4.00.0030.0479.80
4.3.110.0030.0309.80
4.3.100.0030.0279.80
4.3.90.0000.0379.80
4.3.80.0030.0509.80
4.3.70.0070.0309.80
4.3.60.0000.0379.80
4.3.50.0130.0209.80
4.3.40.0030.0509.80
4.3.30.0100.0279.80
4.3.20.0000.0379.80
4.3.10.0030.0379.80
4.3.00.0000.0339.80