PHP convert string to "\xnn" hex [duplicate]

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 · 2018-09-10 13:58:20Z

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, 2018 at 13:58

answered Sep 10, 2018 at 13:45

Marat Badykov

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7 Comments

delboy1978uk Over a year ago

almost but not quite. It gives 48656c6c6f20776f726c64. 3v4l.org/68Cho

FunnyCheese Over a year ago

echo(strhex('Hello World!')); returns '48656c6c6f20576f726c6421'

Devon Bessemer Over a year ago

bin2hex already does this natively

FunnyCheese Over a year ago

@Devon how can i get \x48\x65\x6c\x6c\x6f\x20\x57\x6f\x72\x6c\x64\x21?? tell me

Marat Badykov Over a year ago

@FunnyCheese i updated my answer

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