<?php
function string_shift_left($input, $inputlen, $bits, &$output = null)
{
$skip = (int) ($bits / 8);
$copylen = (int) ($inputlen - $skip);
$offset = $bits % 8;
$mask = (0xff >> $offset) << (8 - $offset);
$output = str_pad('', $inputlen + 1, "\x00");
var_dump($skip, $copylen, $offset, $mask, $output);
if ($offset == 0) {
/* 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++) {
$left = (ord($input[$i + $skip]) << $offset);
$right = (ord($input[$i + $skip + 1]) & $mask) >> $offset;
printf("\n%02x ", $left | $right);
$output[$i] = chr($left | $right);
}
}
//0b000100010001000100000000;
string_shift_left("abc\x00", 3, 2, $output);
for ($i = 0; $i < strlen($output); $i++) {
printf('%08b|', ord($output[$i]));
}
- Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- int(0)
int(3)
int(2)
int(4032)
string(4) " "
194
198
18c 10010100|10011000|10001100|00000000|
- Output for 4.4.2 - 4.4.9
- Parse error: syntax error, unexpected '=', expecting ')' in /in/DtZfb on line 3
Process exited with code 255. - Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
- Parse error: parse error, unexpected '=', expecting ')' in /in/DtZfb on line 3
Process exited with code 255. - Output for 4.3.2 - 4.3.4
- Parse error: parse error, expecting `')'' in /in/DtZfb on line 3
Process exited with code 255.
preferences:
252.05 ms | 401 KiB | 380 Q