Online PHP editor | rfc for PiE5u

@ 2023-01-08T23:35:46Z

<?php
// https://stackoverflow.com/questions/35536141/converting-binary-data-to-ascii-with-php-any-possibility/35536281#35536281
function bin2ascii($input) {
    $output = '';
    for($i=0; $i<strlen($input); $i+=8) {
        $output .= chr(intval(substr($input, $i, 8), 2));
    }
    return $output;
}
https://stackoverflow.com/questions/6382738/convert-string-to-binary-then-back-again-using-php/6382880#6382880
function ascii2bin($input) {
    return array_reduce(str_split($input), fn ($acc, $i) => $acc .= decbin(ord($i)));
    //return array_reduce(str_split($input), fn ($acc, $i) => $acc .= str_pad(decbin(ord($i)), 8, '0', STR_PAD_LEFT));
}

$i = -114514;
var_dump(                                                       decbin($i));
var_dump(                                                 ltrim(decbin($i), $i < 0 ? '1' : '0'));
var_dump(                          ($i < 0 ? '1' : '0') . ltrim(decbin($i), $i < 0 ? '1' : '0'));
var_dump(                bin2ascii(($i < 0 ? '1' : '0') . ltrim(decbin($i), $i < 0 ? '1' : '0')));
$o = rtrim(base64_encode(bin2ascii(($i < 0 ? '1' : '0') . ltrim(decbin($i), $i < 0 ? '1' : '0'))), '=');
var_dump($o);

$d = base64_decode($o);
var_dump($d);
$bits = ascii2bin($d);
$signBit = decbin(ord($d))[0];
$paddedBits = str_pad($bits, (strlen($bits) + (strlen($bits) % 8)) / 8, $signBit, STR_PAD_LEFT);
var_dump($bits);
var_dump($signBit);
var_dump($paddedBits);
var_dump(intval($paddedBits, 2));

Output for git.master, git.master_jit, rfc.property-hooks: string(64) "1111111111111111111111111111111111111111111111100100000010101110" string(17) "00100000010101110" string(18) "100100000010101110" string(3) "�+" string(4) "kCsC" string(3) "�+" string(16) "1001000010101110" string(1) "1" string(16) "1001000010101110" int(37038)

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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