PHP convert string to "\xnn" hex

Question

How can i convert string 'Hello world' to '\x48\x65\x6c\x6c\x6f\x20\x57\x6f\x72\x6c\x64\x21' using php?

Thanks!

Marat Badykov · Accepted Answer · 2018-09-10T13:58:20.543

3

Should work

function strhex($string) {
  $hexstr = unpack('H*', $string);
  return array_shift($hexstr);
}

Update

Code below what you need

function strtohex($string)
{
  $string = str_split($string);
  foreach($string as &$char)
    $char = "\x".dechex(ord($char));
  return implode('',$string);
}

print strtohex("[0-9A-Za-z\+/=]*");

edited Sep 10 '18 at 13:58

answered Sep 10 '18 at 13:45

Marat Badykov

824
4
8

almost but not quite. It gives 48656c6c6f20776f726c64. https://3v4l.org/68Cho – delboy1978uk Sep 10 '18 at 13:47
`echo(strhex('Hello World!'));` returns `'48656c6c6f20576f726c6421'` – FunnyCheese Sep 10 '18 at 13:47
1

bin2hex already does this natively – Devon Bessemer Sep 10 '18 at 13:48
@Devon how can i get \x48\x65\x6c\x6c\x6f\x20\x57\x6f\x72\x6c\x64\x21?? tell me – FunnyCheese Sep 10 '18 at 13:54
@FunnyCheese i updated my answer – Marat Badykov Sep 10 '18 at 13:59
Also you can use `preg_replace("/(\w{2})/", "\x$1", $text)` in last line of function – Mohammad Sep 10 '18 at 13:59
Thanks guys, that works – FunnyCheese Sep 10 '18 at 14:04

PHP convert string to "\xnn" hex

1 Answers1