Online PHP editor | rfc for fTeqPT

@ 2023-11-15T07:41:09Z

<?php

function randomizeTeam(
    int $teamSize,
    array $positionPool,
    array $positionMins = [],
    array $positionMaxs = []
): array {
    // guard conditions
    foreach ($positionMins as $pos => $min) {
        if (!key_exists($pos, $positionPool) || $positionPool[$pos] < $min) {
            throw new Exception('Position pool cannot accommodate minimum required positions');
        }
    }

    // input preparation
    foreach ($positionMaxs as $pos => $max) {
        if (key_exists($pos, $positionPool) && $positionPool[$pos] > $max) {
            $positionPool[$pos] = $max;
        }
    }
    
    $team = [];
    $sum = 0;
    foreach ($positionPool as $pos => &$pool) {
        $team[$pos] = $positionMins[$pos] ?? 0;
        $pool -= $team[$pos];
        if (!$pool) {
            unset($positionPool[$pos]); // remove exhausted pool
        }
        $sum += $team[$pos];
    }
    
    while ($sum < $teamSize && $positionPool) {
        $pos = array_rand($positionPool);
        ++$team[$pos];
        --$positionPool[$pos];
        if (!$positionPool[$pos]) {
            unset($positionPool[$pos]); // remove exhausted pool
        }
        ++$sum;
    }

    if (array_sum($team) < $teamSize) {
        throw new Exception('Position pool was exhausted before filling team');
    }

    return $team;
}

var_export(
    randomizeTeam(
        11,
        [
            'wicket_keeper' => 2,
            'batsman'       => 6,
            'all_rounders'  => 5,
            'bowlers'       => 5,
        ],
        [
            'wicket_keeper' => 1,
            'batsman'       => 3,
            'all_rounders'  => 1,
            'bowlers'       => 2,
        ],
        [
            'wicket_keeper' => 3,
            'batsman'       => 5,
            'all_rounders'  => 5,
            'bowlers'       => 4,
        ]
    )
);

Output for git.master: array ( 'wicket_keeper' => 2, 'batsman' => 4, 'all_rounders' => 2, 'bowlers' => 3, )
Output for git.master_jit: array ( 'wicket_keeper' => 1, 'batsman' => 3, 'all_rounders' => 3, 'bowlers' => 4, )
Output for rfc.property-hooks: array ( 'wicket_keeper' => 1, 'batsman' => 3, 'all_rounders' => 5, 'bowlers' => 2, )

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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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