Online PHP editor | rfc for L2ZEM

@ 2022-06-01T03:53:38Z

<?php

function key_values($key) {
    if ($key[0] == '>') {
        [$lower, $upper] = [substr($key, 1), 'INF'];
    }
    else {
        [$lower, $upper] = explode('-', $key);
    }
    return [$lower, $upper];
}

function convert_slabs($slabs) {
    $bounds = array();
    $last_value = reset($slabs);
    [$lb, $ub] = [$lower, $upper] = key_values(key($slabs));
    while ($value = next($slabs)) {
        [$lower, $upper] = key_values(key($slabs));
        // new entry required?
        if ($value != $last_value) {
            $bounds[] = (object)['lb' => $lb, 'ub' => $ub, 'value' => $last_value];
            [$lb, $ub] = [$lower, $upper];
            $last_value = $value;
        }
        else {
            // no, just extend the upper bound
            $ub = $upper;
        }
    }
    // add the last object
    $bounds[] = (object)['lb' => $lb, 'ub' => $ub, 'value' => $last_value];
    return $bounds;
}

$slabs_array = array(
    [ '0-300' => 2.5, '300-500' => 2.5, '500-1000' => 2.5, '1000-5000' => 2.4, '>5000' => 2.4 ],
    [ '0-300' => 1.2, '300-500' => 1.2, '500-1000' => 1.2, '1000-5000' => 1.3, '>5000' => 1.4 ],
    [ '0-300' => 2.5, '300-500' => 2.5, '500-1000' => 2.5, '1000-5000' => 2.5, '>5000' => 2.5 ],
    [ '0-300' => 4.5, '300-500' => 2.5, '500-1000' => 2.5, '1000-5000' => 2.5, '>5000' => 3.5 ],
    [ '0-300' => 4.5, '300-500' => 3.5, '500-1000' => 3.5, '1000-5000' => 3.5, '>5000' => 3.5 ],
    [ '0-300' => 1.5, '300-500' => 2.5, '500-1000' => 2.5, '1000-5000' => 2.5, '>5000' => 1.5 ],
    [ '0-300' => 1.5, '300-500' => 2.5, '500-1000' => 3.5, '1000-5000' => 2.5, '>5000' => 3.5 ],
    [ '0-300' => 1.5, '300-500' => 2.5, '500-1000' => 2.5, '1000-5000' => 1.5, '>5000' => 1.5 ]
);

foreach ($slabs_array as $slabs) {
    $result = convert_slabs($slabs);
    echo str_replace('},{', "},\n{", json_encode($result)) . PHP_EOL . PHP_EOL;
}

Output for git.master, git.master_jit, rfc.property-hooks: [{"lb":"0","ub":"1000","value":2.5}, {"lb":"1000","ub":"INF","value":2.4}] [{"lb":"0","ub":"1000","value":1.2}, {"lb":"1000","ub":"5000","value":1.3}, {"lb":"5000","ub":"INF","value":1.4}] [{"lb":"0","ub":"INF","value":2.5}] [{"lb":"0","ub":"300","value":4.5}, {"lb":"300","ub":"5000","value":2.5}, {"lb":"5000","ub":"INF","value":3.5}] [{"lb":"0","ub":"300","value":4.5}, {"lb":"300","ub":"INF","value":3.5}] [{"lb":"0","ub":"300","value":1.5}, {"lb":"300","ub":"5000","value":2.5}, {"lb":"5000","ub":"INF","value":1.5}] [{"lb":"0","ub":"300","value":1.5}, {"lb":"300","ub":"500","value":2.5}, {"lb":"500","ub":"1000","value":3.5}, {"lb":"1000","ub":"5000","value":2.5}, {"lb":"5000","ub":"INF","value":3.5}] [{"lb":"0","ub":"300","value":1.5}, {"lb":"300","ub":"1000","value":2.5}, {"lb":"1000","ub":"INF","value":1.5}]

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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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