Online PHP editor | rfc for mmOWf

@ 2018-04-06T01:37:59Z

<?php

function sumArray($array, $index, $col) {
    $returnArray = []; // temporary container
    // sanity checks
    if (!is_array($array)) {
        return 'error not an array';
    }
    $firstRow = reset($array);
    if (!array_key_exists($index, $firstRow) || !array_key_exists($col, $firstRow)) {
        return 'error keys provided not found';
    }
    foreach ($array as $value) {
        if (!isset($returnArray[$value[$index]])) { // initialize
            $returnArray[$value[$index]] = [$index => $value[$index], $col => 0];
        }
        // add value
        $returnArray[$value[$index]][$col] += $value[$col];
    }

    return $returnArray;
}

$products = array (
                     array("Id" => "000001", 
                          "Name" => "Cheese", 
                          "Quantity" => "10", 
                          "Price" => "10"),

                    array("Id" => "000001", 
                          "Name" => "Cheese", 
                          "Quantity" => "20", 
                          "Price" => "20"),

                    array("Id" => "000001", 
                          "Name" => "Cheese", 
                          "Quantity" => "10", 
                          "Price" => "30"),

                    array("Id" => "000002", 
                          "Name" => "Ham", 
                          "Quantity" => "20", 
                          "Price" => "200"),

                    array("Id" => "000002", 
                          "Name" => "Ham", 
                          "Quantity" => "9", 
                          "Price" => "100"),

                    array("Id" => "000003", 
                          "Name" => "Baicon", 
                          "Quantity" => "40", 
                          "Price" => "900")
                       );

$summedArray = sumArray($products, 'Id', 'Quantity');
print_r($summedArray);

Output for git.master, git.master_jit, rfc.property-hooks: Array ( [000001] => Array ( [Id] => 000001 [Quantity] => 40 ) [000002] => Array ( [Id] => 000002 [Quantity] => 29 ) [000003] => Array ( [Id] => 000003 [Quantity] => 40 ) )

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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