Online PHP editor | rfc for 9BPqL

@ 2022-05-10T11:51:40Z

#!/usr/bin/php
<?php

declare(strict_types=1);

const ITERATIONS = 100000;
$results = array();
for ($i = 0; $i < ITERATIONS; ++$i) {
    // heat up cpu (if it was powersaving-running-low-cus-nothing-was-happening, most modern cpus try to do it by default)
}
function array_is_list_post(array $array): bool
{
    $i = 0;
    foreach ($array as $k => $v) {
        if ($k !== $i++) {
            return false;
        }
    }
    return true;
}
function array_is_list_pre(array $array): bool
{
    $i = -1;
    foreach ($array as $k => $v) {
        ++$i;
        if ($k !== $i) {
            return false;
        }
    }
    return true;
}

$l1 = str_split(str_repeat("A", 300), 1);
$t = microtime(true);
for ($i = 0; $i < ITERATIONS; ++$i) {
    array_is_list_pre($l1);
}
$t = microtime(true) - $t;
$results["pre"] = $t;
$t = microtime(true);
for ($i = 0; $i < ITERATIONS; ++$i) {
    array_is_list_post($l1);
}
$t = microtime(true) - $t;
$results["post"] = $t;
if ($results["pre"] === $results["post"]) {
    echo "it's a tie!";
} elseif ($results["pre"] < $results["post"]) {
    echo "pre is faster!";
} else {
    echo "post is faster!";
}
echo "diff: " . abs(($results["pre"] - $results["post"])) . "\n";
var_dump($results);
exit();

Output for git.master: pre is faster!diff: 0.0097970962524414 array(2) { ["pre"]=> float(0.3952620029449463) ["post"]=> float(0.4050590991973877) }
Output for git.master_jit: pre is faster!diff: 0.0040760040283203 array(2) { ["pre"]=> float(0.42237210273742676) ["post"]=> float(0.42644810676574707) }
Output for rfc.property-hooks: pre is faster!diff: 0.028541088104248 array(2) { ["pre"]=> float(0.4747810363769531) ["post"]=> float(0.5033221244812012) }

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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