Online PHP editor | rfc for SsuHr

@ 2024-11-08T20:13:51Z

<?php

$array = [
    [
        'color' => 'red',
        'size' => 'large',
        'shape' => 'circle',
        'startdate' => '2011-08-17',
    ],
    [
        'color' => 'red',
        'size' => 'large',
        'shape' => 'circle',
        'startdate' => '2011-08-18',
    ],
    [
        'color' => 'red',
        'size' => 'large',
        'shape' => 'square',
        'startdate' => '2011-08-20',
    ],
    [
        'color' => 'red',
        'size' => 'large',
        'shape' => 'circle',
        'startdate' => '2011-08-22',
    ],
    [
        'color' => 'red',
        'size' => 'large',
        'shape' => 'circle',
        'startdate' => '2011-08-20',
    ],
    [
        'color' => 'red',
        'size' => 'large',
        'shape' => 'circle',
        'startdate' => '2011-08-23',
    ],
    [
        'color' => 'red',
        'size' => 'large',
        'shape' => 'circle',
        'startdate' => '2011-08-19',
    ],
];

usort($array, fn($a, $b) => $a['startdate'] <=> $b['startdate']);
$result = [];
foreach ($array as $row) {
    $compositeKey = implode(
        '_',
        [$row['color'], $row['size'], $row['shape']]
    );
    if (
        !isset($ref[$compositeKey])
        || ($row['startdate'] != date('Y-m-d', strtotime(($ref[$compositeKey]['enddate'] ?? $ref[$compositeKey]['startdate']) . ' + 1 day')))
    ) {
        if (isset($ref[$compositeKey])) {
           unset($ref[$compositeKey]);
        }
        $ref[$compositeKey] = $row;
        $result[] =& $ref[$compositeKey];
    } else {
        $ref[$compositeKey]['enddate'] = $row['startdate'];
    }
}
var_export($result);

Output for git.master, git.master_jit: array ( 0 => array ( 'color' => 'red', 'size' => 'large', 'shape' => 'circle', 'startdate' => '2011-08-17', 'enddate' => '2011-08-20', ), 1 => array ( 'color' => 'red', 'size' => 'large', 'shape' => 'square', 'startdate' => '2011-08-20', ), 2 => array ( 'color' => 'red', 'size' => 'large', 'shape' => 'circle', 'startdate' => '2011-08-22', 'enddate' => '2011-08-23', ), )

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2022-12-01 RFC: Property hooks - included in PHP 8.4
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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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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