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@ 2014-04-14T13:06:28Z

<?php

function string_shift_left($input, $inputlen, $bits, &$output = null)
{
	$skip = (int) ($bits / 8);
	$copylen = (int) ($inputlen - $skip);
	$offset = 8 - ($bits % 8);
	$mask = 0xff >> $offset;

    var_dump($skip, $copylen, $offset, $mask);

    $output = str_pad('', $inputlen + 1, "\x00");

	if ($offset == 8) {
		/* Shifting multiples of 8 allows us to simply copy the relevant bytes */
        for ($i = 0; $i < $copylen; $i++) {
            $output[$i] = $input[$i + $skip];
        }
		return;
	}

	for ($i = 0; $i < $copylen; $i++) {
		$output[$i] = chr((ord($input[$i + $skip]) << $offset) | (ord($input[$i + $skip + 1]) & $mask)); 
	}
}

string_shift_left("\x01", 1, 3, $output);

for ($i = 0; $i < strlen($output); $i++) {
    printf('%08b', ord($output[$i]));
}

Output for git.master, git.master_jit, rfc.property-hooks: int(0) int(1) int(5) int(7) Warning: Uninitialized string offset 1 in /in/RU9Qq on line 23 0010000000000000

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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