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run code in 300+ PHP versions simultaneously
<?php class Similarity { protected $data = null; protected $distance = null; public function __construct($data, $distance) { $this->data = (string)$data; $this->distance = (int)$distance; } public function checkMatch($search, callable $checker=null, array $args=[], $return=false) { $data = preg_split('/\s+/', strtolower($this->data), -1, PREG_SPLIT_NO_EMPTY); $search = trim(preg_replace('/\s+/', ' ', strtolower($search))); foreach($this->getAssoc($data, substr_count($search, ' ')+1) as $assoc) { foreach($this->getPermutations($assoc) as $ordered) { $ordered = join(' ', $ordered); $result = call_user_func_array($checker, array_merge([$ordered, $search], $args)); if($result<=$this->distance) { return $return?$ordered:true; } } } return $return?null:false; } protected function getPermutations(array $input) { if(count($input)==1) { return [$input]; } $result = []; foreach($input as $key=>$element) { foreach($this->getPermutations(array_diff_key($input, [$key=>0])) as $subarray) { $result[] = array_merge([$element], $subarray); } } return $result; } protected function nextAssoc($assoc) { if(false !== ($pos = strrpos($assoc, '01'))) { $assoc[$pos] = '1'; $assoc[$pos+1] = '0'; return substr($assoc, 0, $pos+2). str_repeat('0', substr_count(substr($assoc, $pos+2), '0')). str_repeat('1', substr_count(substr($assoc, $pos+2), '1')); } return false; } protected function getAssoc(array $data, $count=2) { if(count($data)<$count) { return null; } $assoc = str_repeat('0', count($data)-$count).str_repeat('1', $count); $result = []; do { $result[]=array_intersect_key($data, array_filter(str_split($assoc))); } while($assoc=$this->nextAssoc($assoc)); return $result; } } $data = 'Niels Faurskov Andersen'; $search = [ 'Niels Andersen', 'Niels Faurskov', 'Niels Faurskov Andersen', 'Nils Faurskov Andersen', 'Nils Andersen', 'niels faurskov', 'niels Fæurskov', 'niffddels Faurskævffre' ]; $checker = new Similarity($data, 2); echo(sprintf('Testing "%s"'.PHP_EOL.PHP_EOL, $data)); foreach($search as $name) { echo(sprintf( 'Name "%s" has %s'.PHP_EOL, $name, ($result=$checker->checkMatch($name, 'levenshtein', [], 1)) ?sprintf('matched with "%s"', $result) :'mismatched' ) ); }

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)
8.3.60.0090.00918.68
8.3.50.0120.00521.97
8.3.40.0040.01119.01
8.3.30.0070.00720.17
8.3.20.0040.00420.33
8.3.10.0040.00422.10
8.3.00.0050.00322.29
8.2.180.0140.01016.88
8.2.170.0190.00322.96
8.2.160.0070.00722.21
8.2.150.0030.00624.18
8.2.140.0060.00324.66
8.2.130.0030.00526.16
8.2.120.0000.00821.05
8.2.110.0090.00022.00
8.2.100.0120.00019.89
8.2.90.0040.00419.35
8.2.80.0050.00318.05
8.2.70.0050.00317.88
8.2.60.0000.00818.00
8.2.50.0030.00618.07
8.2.40.0050.00318.16
8.2.30.0040.00419.39
8.2.20.0030.00517.94
8.2.10.0030.00518.00
8.2.00.0030.00617.97
8.1.280.0070.00725.92
8.1.270.0000.00823.99
8.1.260.0040.00426.35
8.1.250.0050.00328.09
8.1.240.0030.00623.77
8.1.230.0040.00819.22
8.1.220.0030.00517.79
8.1.210.0090.00018.77
8.1.200.0030.00617.50
8.1.190.0030.00517.78
8.1.180.0000.01018.68
8.1.170.0000.00818.91
8.1.160.0080.00018.91
8.1.150.0040.00418.79
8.1.140.0060.00317.52
8.1.130.0070.00017.93
8.1.120.0000.00717.62
8.1.110.0000.00817.63
8.1.100.0030.00517.66
8.1.90.0000.00717.69
8.1.80.0000.00717.64
8.1.70.0040.00417.61
8.1.60.0090.00017.66
8.1.50.0040.00417.75
8.1.40.0000.00817.66
8.1.30.0050.00317.65
8.1.20.0060.00317.84
8.1.10.0000.00817.66
8.1.00.0030.00517.73
8.0.300.0000.00718.77
8.0.290.0000.00717.02
8.0.280.0040.00418.51
8.0.270.0030.00317.33
8.0.260.0040.00417.01
8.0.250.0050.00317.02
8.0.240.0030.00717.17
8.0.230.0000.00717.05
8.0.220.0040.00417.07
8.0.210.0070.00017.01
8.0.200.0040.00417.11
8.0.190.0040.00417.05
8.0.180.0000.00717.05
8.0.170.0030.00617.03
8.0.160.0000.00817.02
8.0.150.0040.00417.01
8.0.140.0040.00416.98
8.0.130.0080.00013.54
8.0.120.0050.00317.04
8.0.110.0050.00317.00
8.0.100.0000.00717.19
8.0.90.0080.00017.09
8.0.80.0100.01317.05
8.0.70.0040.00416.86
8.0.60.0000.00817.14
8.0.50.0040.00416.96
8.0.30.0080.01217.45
8.0.20.0090.01317.48
8.0.10.0040.00417.18
8.0.00.0120.00817.05
7.4.330.0000.00615.00
7.4.320.0030.00316.66
7.4.300.0030.00316.77
7.4.290.0040.00416.62
7.4.280.0070.00016.79
7.4.270.0000.00716.66
7.4.260.0000.00813.55
7.4.250.0000.00816.79
7.4.240.0040.00416.86
7.4.230.0000.00716.56
7.4.220.0130.00616.93
7.4.210.0080.01016.79
7.4.200.0040.00416.88
7.4.190.0000.00716.83
7.4.160.0080.00816.91
7.4.150.0110.00717.40
7.4.140.0090.01217.86
7.4.130.0100.00716.58
7.4.120.0050.01316.85
7.4.110.0060.01216.88
7.4.100.0060.01216.77
7.4.90.0090.00916.72
7.4.80.0060.01319.39
7.4.70.0080.00816.54
7.4.60.0130.00316.85
7.4.50.0030.00616.80
7.4.40.0090.00922.77
7.4.30.0160.00616.73
7.4.00.0080.01015.20
7.3.330.0030.00313.34
7.3.320.0030.00313.49
7.3.310.0030.00616.39
7.3.300.0080.00016.58
7.3.290.0000.01416.60
7.3.280.0070.01316.54
7.3.270.0090.00917.40
7.3.260.0070.01016.90
7.3.250.0120.00516.72
7.3.240.0090.00916.50
7.3.230.0120.00616.64
7.3.210.0100.00716.55
7.3.200.0120.00619.39
7.3.190.0090.00916.56
7.3.180.0140.00316.96
7.3.170.0060.01016.63
7.3.160.0000.01616.62
7.3.120.0100.00715.26
7.3.110.0050.01115.14
7.3.100.0050.01115.12
7.3.90.0090.00915.05
7.3.80.0020.01414.97
7.3.70.0030.01015.00
7.3.60.0070.00715.06
7.3.50.0030.01414.88
7.3.40.0070.01015.07
7.3.30.0080.00915.13
7.3.20.0050.00916.78
7.3.10.0080.00716.74
7.3.00.0070.00716.98
7.2.330.0030.01616.85
7.2.320.0080.00816.95
7.2.310.0040.01317.06
7.2.300.0060.01217.00
7.2.290.0140.00316.88
7.2.250.0060.01315.12
7.2.240.0070.01214.97
7.2.230.0050.01315.29
7.2.220.0030.01415.13
7.2.210.0070.00715.33
7.2.200.0050.01315.24
7.2.190.0070.00915.24
7.2.180.0040.01515.47
7.2.170.0070.00815.21
7.2.00.0030.01519.28
7.1.330.0060.01016.04
7.1.320.0050.01115.97
7.1.310.0050.01015.99
7.1.300.0060.00716.00
7.1.290.0090.00915.87
7.1.280.0090.00916.04
7.1.270.0050.00916.11
7.1.260.0050.00815.91
7.1.100.0060.00918.56
7.1.70.0030.01417.45
7.1.60.0100.01419.32
7.1.50.0120.00017.23
7.1.00.0030.03322.36
7.0.200.0000.01216.98
7.0.140.0030.07022.00
7.0.100.0000.08719.97
7.0.90.0470.06720.00
7.0.80.0030.07019.91
7.0.70.0170.07320.00
7.0.60.0400.06719.90
7.0.50.0170.07320.34
7.0.40.0170.07720.13
7.0.30.0270.05320.10
7.0.20.0100.08020.19
7.0.10.0130.08320.12
7.0.00.0100.07320.10
5.6.280.0100.06721.10
5.6.250.0070.04720.64
5.6.240.0170.04020.49
5.6.230.0130.06320.66
5.6.220.0070.08020.62
5.6.210.0130.04720.64
5.6.200.0130.06720.98
5.6.190.0070.08720.99
5.6.180.0100.08021.16
5.6.170.0030.08321.04
5.6.160.0130.05321.16
5.6.150.0100.08021.09
5.6.140.0100.08021.03
5.6.130.0070.08320.98
5.6.120.0070.08721.12
5.6.110.0030.05321.06
5.6.100.0070.04721.06
5.6.90.0170.07020.94
5.6.80.0100.07720.43
5.6.70.0000.04020.45
5.6.60.0070.06720.53
5.6.50.0100.07320.54
5.6.40.0030.04020.43
5.6.30.0070.03720.45
5.6.20.0070.07320.34
5.6.10.0000.08320.33
5.6.00.0070.04320.45
5.5.380.0100.08020.47
5.5.370.0100.07020.33
5.5.360.0170.04020.33
5.5.350.0100.07320.45
5.5.340.0100.08020.80
5.5.330.0100.07320.94
5.5.320.0130.08020.76
5.5.310.0200.07020.83
5.5.300.0070.08720.94
5.5.290.0000.05020.94
5.5.280.0130.07320.66
5.5.270.0100.07720.88
5.5.260.0030.08020.91
5.5.250.0100.07720.48
5.5.240.0070.07720.14
5.5.230.0000.08320.26
5.5.220.0070.07720.17
5.5.210.0100.07020.23
5.5.200.0030.05020.30
5.5.190.0100.08020.30
5.5.180.0070.07720.18
5.5.160.0100.07720.11
5.5.150.0100.05720.21
5.5.140.0070.07020.16
5.5.130.0070.05720.10
5.5.120.0100.04320.25
5.5.110.0130.06720.24
5.5.100.0230.06020.18
5.5.90.0130.04320.18
5.5.80.0030.07020.09
5.5.70.0070.08020.18
5.5.60.0030.08320.17
5.5.50.0000.05720.08
5.5.40.0070.05320.11
5.5.30.0000.05019.95
5.5.20.0030.08020.04
5.5.10.0130.04020.15
5.5.00.0100.06319.96
5.4.450.0070.08319.18
5.4.440.0100.07719.45
5.4.430.0030.08319.37
5.4.420.0030.08019.27
5.4.410.0030.04719.45
5.4.400.0030.08019.04
5.4.390.0070.07319.23
5.4.380.0030.07719.09
5.4.370.0130.07319.09
5.4.360.0130.06719.16
5.4.350.0000.04318.88
5.4.340.0030.04019.05
5.4.320.0070.07319.18
5.4.310.0070.08019.09
5.4.300.0170.04719.16
5.4.290.0030.05319.14
5.4.280.0070.07719.04
5.4.270.0100.07719.23
5.4.260.0200.05018.88
5.4.250.0070.08019.13
5.4.240.0030.08718.89
5.4.230.0130.07018.84
5.4.220.0030.07719.16
5.4.210.0100.07319.23
5.4.200.0100.06718.84
5.4.190.0170.06319.20
5.4.180.0200.06019.02
5.4.170.0030.08718.94
5.4.160.0170.06719.11
5.4.150.0170.07719.19
5.4.140.0170.06716.27
5.4.130.0030.07316.47
5.4.120.0070.06716.47
5.4.110.0170.05716.50
5.4.100.0000.07716.52
5.4.90.0030.07316.49
5.4.80.0070.07316.47
5.4.70.0070.03716.41
5.4.60.0070.07016.33
5.4.50.0100.06716.48
5.4.40.0100.07316.50
5.4.30.0170.03316.43
5.4.20.0070.04016.49
5.4.10.0030.04016.48
5.4.00.0030.03715.88
5.3.290.0000.08014.65
5.3.280.0100.07014.55
5.3.270.0130.06314.55
5.3.260.0100.07714.64
5.3.250.0100.04014.59
5.3.240.0070.05714.64
5.3.230.0100.07014.60
5.3.220.0030.04314.71
5.3.210.0170.06314.71
5.3.200.0030.07714.64
5.3.190.0070.07314.68
5.3.180.0100.06314.55
5.3.170.0030.07314.54
5.3.160.0030.08014.54
5.3.150.0100.06014.56
5.3.140.0100.07014.68
5.3.130.0130.06314.50
5.3.120.0000.08314.54
5.3.110.0100.06314.64
5.3.100.0130.07014.00
5.3.90.0070.07014.02
5.3.80.0130.06714.09
5.3.70.0030.04714.08
5.3.60.0200.06014.01
5.3.50.0030.05013.98
5.3.40.0100.07014.02
5.3.30.0100.04314.05
5.3.20.0100.07013.76
5.3.10.0070.04313.77
5.3.00.0100.06713.71
5.2.170.0070.03712.18
5.2.160.0030.02712.18
5.2.150.0030.03312.18
5.2.140.0000.05712.18
5.2.130.0070.04712.18
5.2.120.0000.03312.18
5.2.110.0030.06312.18
5.2.100.0070.06312.18
5.2.90.0100.05712.18
5.2.80.0000.04312.18
5.2.70.0070.05712.18
5.2.60.0000.04012.18
5.2.50.0130.05312.18
5.2.40.0070.05712.18
5.2.30.0030.06312.18
5.2.20.0000.06312.18
5.2.10.0070.05712.18
5.2.00.0000.05012.18
5.1.60.0000.05712.18
5.1.50.0030.05712.18
5.1.40.0030.05312.18
5.1.30.0100.05012.18
5.1.20.0070.02712.18
5.1.10.0030.03712.18
5.1.00.0070.04712.18
5.0.50.0070.04012.18
5.0.40.0230.01712.18
5.0.30.0030.06012.18
5.0.20.0070.04312.18
5.0.10.0000.03312.18
5.0.00.0070.03312.18
4.4.90.0030.03712.18
4.4.80.0030.03712.18
4.4.70.0030.03712.18
4.4.60.0030.02312.18
4.4.50.0000.04012.18
4.4.40.0000.05312.18
4.4.30.0030.02712.18
4.4.20.0070.03012.18
4.4.10.0030.04312.18
4.4.00.0030.03012.18
4.3.110.0100.02712.18
4.3.100.0000.03712.18
4.3.90.0030.02712.18
4.3.80.0000.05012.18
4.3.70.0070.02712.18
4.3.60.0000.02312.18
4.3.50.0070.01312.18
4.3.40.0000.05312.18
4.3.30.0030.01712.18
4.3.20.0030.01712.18
4.3.10.0000.02012.18
4.3.00.0000.02712.18

preferences:
44.69 ms | 401 KiB | 5 Q