Online PHP editor | rfc for UCqoe

@ 2022-11-16T15:49:21Z

<?php

/**
 * @template TKey of array-key
 * @template TValue
 */
class Collection
{
    /**
     * @var array<TKey, TValue>
     */
    protected $items = [];
    
    /**
     * @param  array<TKey, TValue>  $items
     * @return void
     */
    public function __construct($items = [])
    {
        $this->items = $items;
    }
    
    /**
     * @param  TValue|array-key  $key
     * @return bool
     */
    public function containsStrict_foreach($key)
    {
        foreach ($this->items as $item) {
            if ($item === $key) {
                return true;
            }
        }
        return false;
    }

    /**
     * @param  TValue|array-key  $key
     * @return bool
     */
    public function containsStrict_in_array($key)
    {
        return in_array($key, $this->items, true);
    }
}

/**
 * @template TValue
 * @param array<array-key, TValue>  $items
 * @return array{int, int}
 */
function bench($items): array
{
    $value = $items[count($items) / 2];

    $collection = new Collection($items);
    $prev = hrtime(true);
    $collection->containsStrict_foreach($value);
    $foreach = hrtime(true) - $prev;

    $collection = new Collection($items);
    $prev = hrtime(true);
    $collection->containsStrict_in_array($value);
    $inArray = hrtime(true) - $prev;

    return [$foreach, $inArray];
}

$fmt = "%5s | %-13.13s | %24s | %25s\n";
printf($fmt, 'n', 'name', 'containsStrict (foreach)', 'containsStrict (in_array)');
foreach ([100, 1000, 10000] as $n) {
    printf($fmt, $n, "serial int", ...bench(range(1, $n)));
    printf($fmt, $n, "random int", ...bench(array_map(fn () => random_int(1, $n), range(1, $n))));
    printf($fmt, $n, "uniqid string", ...bench(array_map(fn () => uniqid(), range(1, $n))));
}

Output for git.master: n | name | containsStrict (foreach) | containsStrict (in_array) 100 | serial int | 2965 | 911 100 | random int | 461 | 330 100 | uniqid string | 1282 | 751 1000 | serial int | 5521 | 661 1000 | random int | 5490 | 721 1000 | uniqid string | 7264 | 3587 10000 | serial int | 58930 | 4979 10000 | random int | 43652 | 4920 10000 | uniqid string | 89820 | 45165
Output for git.master_jit: n | name | containsStrict (foreach) | containsStrict (in_array) 100 | serial int | 2705 | 1082 100 | random int | 782 | 291 100 | uniqid string | 1102 | 711 1000 | serial int | 5450 | 601 1000 | random int | 5821 | 691 1000 | uniqid string | 7504 | 4188 10000 | serial int | 57959 | 7855 10000 | random int | 51156 | 5040 10000 | uniqid string | 120507 | 51997

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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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