Using PHP to Convert ASCII Character to Decimal Equivalent

Question

Can someone suggest a (preferably) graceful way to convert an ASCII character to its decimal equivalent using PHP?

streetparade · Accepted Answer · 2009-12-02 22:11:35Z

12

function ascii_to_dec($str)
{
  for ($i = 0, $j = strlen($str); $i < $j; $i++) {
    $dec_array[] = ord($str{$i});
  }
  return $dec_array;
}

example usage :

$ascii ="\t";
print_r( ascii_to_dec($ascii));

returns an array

Array
(
    [0] => 9
)

answered Dec 2, 2009 at 22:11

streetparade

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1 Comment

lolesque Over a year ago

Inverse function: foreach ($dec_array as $dec_code) { $str .= chr($dec_code); }

Chuck Norris · Accepted Answer · 2012-04-07 18:58:19Z

5

ord() is what you need

edited Apr 7, 2012 at 18:58

Chuck Norris

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answered Dec 2, 2009 at 22:07

jkndrkn

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Comments

Community · Accepted Answer · 2023-11-17 19:24:28Z

3

ord() returns the integer ascii value of a character

chr() returns a character from an ascii value

edited Nov 17, 2023 at 19:24

CommunityBot

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answered Dec 2, 2009 at 22:06

dnagirl

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Comments

Community · Accepted Answer · 2023-11-20 22:45:59Z

1

Try ord.

edited Nov 20, 2023 at 22:45

CommunityBot

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answered Dec 2, 2009 at 22:05

fbrereto

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Comments

php_coder_3809625 · Accepted Answer · 2014-08-06 10:16:26Z

0

Just to add onto streetparade's answer

foreach ($array as $decval)
{
  echo $decval;
}

returns raw dec for the characters.

answered Aug 6, 2014 at 10:16

php_coder_3809625

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