Enhancement of Arrays class

[lablnet]

I think we should implement four more methods in our Arrays class

1. Remove duplicate

there should be method namely removeDuplicates() which remove duplicate records in array consider following data set

        $dataSet = [
            'users' => 
            [
                'id' => 1,
                'name' => "Umer",
                'username' => 'peter',
            ],
            [
                'id' => 2,
                'name' => "Peter Khot",
                'username' => 'peter',
            ]
        ];

Look at above problem set and see the username become duplicate, we don't think how it happen, but there should be way/method which remove duplicate by specific key pair.

2. Pluck

To retrieves all of the values for a given key from an array Consider following dataset

        $array = [
            ['developer' => ['id' => 1, 'name' => 'Umer']],
            ['developer' => ['id' => 2, 'name' => 'Peter']],
        ];

if we do something following Arr:ays:pluck($array, 'developer.name'); it should return both name.

3. Most Occurring

Like anyone wants return most occuring name from array so there should be method that works with every datatype to get most occurring values. consider the following dataset

        $dataSet = [
            'users' => 
            [
                'id' => 1,
                'name' => "Umer",
                'username' => 'peter',
            ],
            [
                'id' => 2,
                'name' => "Umer",
                'username' => 'umer01'
            ],
            [
                'id' => 3,
                'name' => "Peter Khot",
                'username' => 'peter',
            ]
        ];

so if we wants most occuring name it should return Umer [It should works with every data type even with bool]

4 Least Occurring

Like anyone wants return least occuring name from array so there should be method that works with every datatype to get most occurring values. consider the following dataset

        $dataSet = [
            'users' => 
            [
                'id' => 1,
                'name' => "Umer",
                'username' => 'peter',
            ],
            [
                'id' => 2,
                'name' => "Umer",
                'username' => 'umer01'
            ],
            [
                'id' => 3,
                'name' => "Peter Khot",
                'username' => 'peter',
            ]
        ];

so if we wants least occuring name it should return Peter Khot [It should works with every data type even with bool]

Here above all are real world problem sets

What do you think @peter279k and @Maikuolan

[lablnet]

Now last method is left still

2. Pluck

To retrieves all of the values for a given key from an array Consider following dataset

        $array = [
            ['developer' => ['id' => 1, 'name' => 'Umer']],
            ['developer' => ['id' => 2, 'name' => 'Peter']],
        ];

if we do something following Arr:ays:pluck($array, 'developer.name'); it should return both name.

[peter279k]

Please consider about the array_column function.

https://www.php.net/manual/en/function.array-column.php

Muhammad Umer Farooq notifications@github.com 於 2019年5月13日 週一 下午5:12 寫道：

Now last method is left still

2. Pluck

To retrieves all of the values for a given key from an array Consider following dataset

    $array = [            ['developer' => ['id' => 1, 'name' => 'Umer']],            ['developer' => ['id' => 2, 'name' => 'Peter']],        ];

if we do something following Arr:ays:pluck($array, 'developer.name'); it should return both name.

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[lablnet]

@peter279k i tried following code

    public static function pluck(array $array, $key, $opr = '.')
    {
        if (self::isMulti($array)) {
            $dataSet = [];
            foreach (explode($opr, $key) as $k) {
                print_r($k);
                    $dataSet = array_column($array, $k);
                    //$dataSet = $array[$k];
                    print_r($dataSet);
            }

            return $dataSet;
        }

        throw new \InvalidArgumentException("The array given should be multi-dimensional array", 500);

    }

Usage

        $array = [
            ['developer' => ['id' => 1, 'name' => 'Alex']],
            ['developer' => ['id' => 2, 'name' => 'Peter']],
        ];
        $arrTest = [1,2,3,1,4,6];
        echo "</pre><hr/><h2>Most Occuring</h2><pre>";
        //print_r($dataSet);
        print_r(Arrays::pluck($array, 'developer.id'));
        echo "</pre>";

Output

Expexted output you already knows that discussed aboved help to resolve this case.

[peter279k]

 $array = [
            ['developer' => ['id' => 1, 'name' => 'Alex']],
            ['developer' => ['id' => 2, 'name' => 'Peter']],
        ];

The array_column is only worked on the following array:

$array = [
    ['id' => 1, 'name' => 'Alex'],
    ['id' => 2, 'name' => 'Peter'],
];

If we want to accept the array you specify, It's not good enough to use array_column.

My approach is as follows:

• Firstly, check the specific key is mapped to the value array.
• Second, if it's array, the next specific key is in the array column, collect it.

If we want to use array_column, we have to try generating the column-based array firstly.

[lablnet]

@peter279k Thanks for your reply, i have found another good solution, this is required only last key which we want to search here in above case is id or name let me add that code in PR