Online PHP editor | rfc for GYbWC

@ 2024-01-26T16:07:17Z

<?php

$str = "23456789ABCDEGHJKMNPQRSTUVXYZabcdeghjkmnpqrstuvxyz";
$excludes = ['cp','cb','ck','c6','c9','rn','rm','mm','co','do','cl','db','qp','qb','dp','ww'];
$length = 5;

$indexedExcludes = array_combine($excludes, $excludes);
$dictionaryArray = str_split($str);

function fastCaptcha(array $dictionary, array $excludedSyllables, int $length): string
{
    $captcha = '';
    $previousCharacter = '';
    $generatedLength = 0;

    while ($generatedLength < $length) {
        $randomCharacter = $dictionary[array_rand($dictionary)];

        if(array_key_exists($previousCharacter . $randomCharacter, $excludedSyllables)) {
            continue;
        }

        $captcha .= $randomCharacter;
        $previousCharacter = $randomCharacter;
        $generatedLength++;
    }

    return $captcha;
}

$excludesRegex = '/' . implode('|', $excludes) . '/';

function fuckedCaptcha(string $dictionary, string $excludedSyllables, int $length): string
{
    do {
        $code = substr(str_shuffle(str_repeat($dictionary, 3)), 0, $length);
    } while (preg_match($excludedSyllables, $code));

    return $code;
}


$t0 = microtime(true);

for ($i = 0; $i < 100000; $i++)
    fuckedCaptcha($str, $excludesRegex, $length);

$t1 = microtime(true);

for ($i = 0; $i < 100000; $i++)
    fastCaptcha($dictionaryArray, $indexedExcludes, $length);

$t2 = microtime(true);

echo "regexp     : " . ($t1 - $t0) . "\n";
echo "array index: " . ($t2 - $t1) . "\n";

Output for git.master_jit: regexp : 0.2460629940033 array index: 0.064589977264404
Output for git.master: regexp : 0.24365997314453 array index: 0.06610107421875
Output for rfc.property-hooks: regexp : 0.23608493804932 array index: 0.06958794593811

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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