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PHP Array Key Combiner: Combine arrays finding intersections

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Version License PHP version Categories
arraykeycombiner 1.0.0GNU General Publi...5Algorithms, PHP 5, Data types
Description Author

This class can combine arrays finding intersections.

It takes a list of arrays and finds intersections between the element values.

The class returns an array with the intersections combined in single elements and added to the master array.

Innovation Award
PHP Programming Innovation award nominee
February 2017
Number 5
This class can combine arrays finding intersections.

It takes a list of arrays and finds intersections between the element values.

The class returns an array with the intersections combined in single elements and added to the master array.

Manuel Lemos
  Performance   Level  
Name: Jelle Sebreghts <contact>
Classes: 7 packages by
Country: Belgium Belgium
Age: 27
All time rank: 150710 in Belgium Belgium
Week rank: 149 Up1 in Belgium Belgium Up
Innovation award
Innovation award
Nominee: 4x

Details

ArrayKeyCombiner

Build Status Code Climate Test Coverage Issue Count

Combines arrays by searching for intersections and adding them to the master array. Keys are combined using a delimiter.

use Jelle_S\Util\Combiner\ArrayKeyCombiner;

// Search this array of arrays for intersections and extract them, using a
// delimiter to combine the keys. Limit the number of iterations to search for
// intersections to 10.000, limit the minimum size of intersections to 3, set
// the key delimiter to a comma.
$arrays = array(
 array(
   'a' => 1,
   'b' => 2,
   'c' => 3,
   'd' => 4,
   'e' => 9,
 ),
 array(
   'a' => 1,
   'b' => 2,
   'c' => 3,
   'e' => 9,
 ),
 array(
   'a' => 1,
   'b' => 42,
   'c' => 3,
   'd' => 4,

 ),
 array(
   'b' => 42,
   'c' => 3,
   'a' => 1,
 ),
 array(
   'z' => 26,
   'e' => 9,
   'a' => 1,
 ),
);
$combiner = new Jelle_S\Util\Combiner\ArrayKeyCombiner($arrays, 3, 10000, ',');
print_r($combiner->combine());

Output:

Array
(
    [4] => Array
        (
            [a] => 1
            [e] => 9
            [z] => 26
        )

    [0,1] => Array
        (
            [a] => 1
            [b] => 2
            [c] => 3
            [e] => 9
        )

    [2,3] => Array
        (
            [a] => 1
            [c] => 3
            [b] => 42
        )

    [2,0] => Array
        (
            [d] => 4
        )

)

The 'a' and 'z' keys of the array with key '4' were not combined because the threshold for combinations is 3, and combining them would result in a combined array with only two elements.

The arrays with keys '2' and '0' were combined because after extracting the combinations, these two arrays were identical, and the threshold has no effect for identical arrays, they are always combined.

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  Plain text file ArrayKeyCombiner.php Class Class source

  Files folder image Files  /  tests  
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  Plain text file ArrayKeyCombinerTest.php Class Class source

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Needed packages  
Class DownloadWhy it is needed Dependency
PHP Array Intersections Download .zip .tar.gz Composer dependency. Required
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