473,836 Members | 2,285 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

ascii to hex

I need to convert ascii chars to hex chars.

I searched the internet, found hex to ascii, but nowhere is there a
ascii to hex method created by anyone.

Can anyone help me with that?

Chears

Aug 4 '06 #1
5 51514
ku********@gmai l.com wrote:
I need to convert ascii chars to hex chars.

I searched the internet, found hex to ascii, but nowhere is there a
ascii to hex method created by anyone.

Can anyone help me with that?

Chears
Hi,

You question is a bit confusing. :-)
hex is nothing more than a 16-base notation.
ascii is definition to declare the first 128 values of a byte to characters
(or more depending on which one you pick).

So that are two different animals.

In PHP:

int -ascii char : chr()
http://nl2.php.net/manual/en/function.chr.php

ascii -int : ord()
http://nl2.php.net/manual/en/function.ord.php

Note that the int is 10-base, so you'll have to transform it into hex by
using dexhex() and hexdec() depending on the direction. :-)

Also, this may be of use:
http://www.lookuptables.com/

Hope that helps you going.

Regards,
Erwin Moller
Aug 4 '06 #2
ku********@gmai l.com wrote:
I need to convert ascii chars to hex chars.

I searched the internet, found hex to ascii, but nowhere is there a
ascii to hex method created by anyone.

Can anyone help me with that?

Chears
I created such a method some time ago - maybe it can help you...

function ascii2hex($asci i) {
$hex = '';
for ($i = 0; $i < strlen($ascii); $i++) {
$byte = strtoupper(dech ex(ord($ascii{$ i})));
$byte = str_repeat('0', 2 - strlen($byte)). $byte;
$hex.=$byte." ";
}
return $hex;
}

function hex2ascii($hex) {
$ascii='';
$hex=str_replac e(" ", "", $hex);
for($i=0; $i<strlen($hex) ; $i=$i+2) {
$ascii.=chr(hex dec(substr($hex , $i, 2)));
}
return($ascii);
}

adlerweb
Aug 4 '06 #3
<ku********@gma il.comwrote in message
news:11******** *************@m 79g2000cwm.goog legroups.com...
>I need to convert ascii chars to hex chars.

I searched the internet, found hex to ascii, but nowhere is there a
ascii to hex method created by anyone.

$hex = "64";
$ascii = "a";
echo chr(hexdec($hex ));
echo dechex(ord($asc ii));

--
"Ohjelmoija on organismi joka muuttaa kofeiinia koodiksi" - lpk
http://outolempi.net/ahdistus/ - Satunnaisesti päivittyvä nettisarjis
sp**@outolempi. net || Gedoon-S @ IRCnet || rot13(xv***@bhg byrzcv.arg)
Aug 4 '06 #4
Thanks all,

I found it thanks to these posts:

$len = strlen('The lenght of the text is 28');

$a = round(($len / 16));
$b = round(($len - 16) * $a);

echo chr(dechex($b)) ;
Kimmo Laine wrote:
<ku********@gma il.comwrote in message
news:11******** *************@m 79g2000cwm.goog legroups.com...
I need to convert ascii chars to hex chars.

I searched the internet, found hex to ascii, but nowhere is there a
ascii to hex method created by anyone.


$hex = "64";
$ascii = "a";
echo chr(hexdec($hex ));
echo dechex(ord($asc ii));

--
"Ohjelmoija on organismi joka muuttaa kofeiinia koodiksi" - lpk
http://outolempi.net/ahdistus/ - Satunnaisesti päivittyvä nettisarjis
sp**@outolempi. net || Gedoon-S @ IRCnet || rot13(xv***@bhg byrzcv.arg)
Aug 4 '06 #5
<ku********@gma il.comwrote in message
news:11******** **************@ b28g2000cwb.goo glegroups.com.. .
Thanks all,

I found it thanks to these posts:

$len = strlen('The lenght of the text is 28');

$a = round(($len / 16));
$b = round(($len - 16) * $a);

echo chr(dechex($b)) ;

That makes no sense to me. But I'm not gonna say anything, if you feel you
got it right and you think it somehow works (does what you want to do) then
it's okay. But it does not, however, convert a hex to an ascii. instead it
converts "something" (I have absolutely no idea what the string length and a
few mathematical operations are supposed to produce) from decimal number to
hex and that to ascii which is totally not what you asked. But perhpas this
is what you want, I dunno...

--
"Ohjelmoija on organismi joka muuttaa kofeiinia koodiksi" - lpk
http://outolempi.net/ahdistus/ - Satunnaisesti päivittyvä nettisarjis
sp**@outolempi. net || Gedoon-S @ IRCnet || rot13(xv***@bhg byrzcv.arg)
Aug 4 '06 #6

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

37
10182
by: chandy | last post by:
Hi, I have an Html document that declares that it uses the utf-8 character set. As this document is editable via a web interface I need to make sure than high-ascii characters that may be accidentally entered are properly represented when the document is served. My programming language allows me to get the ascii value for any individual character so what I am doing when a change is saved is to look at each character in the content and...
4
3859
by: wob | last post by:
Many thanks for those who responded to my question of "putting greek char into C string". In searching for an solution, I noticed that there are more than one version of "Extended ASCII characters"(No. 128 to 255) . e.g., in one version No. 224 is the symbol alpha, in another, it's a "a" with a ` on it... How come? You can see it here: http://www.kturby.com/cables/ascii2.htm
2
6207
by: Martín Marconcini | last post by:
Hello there, I'm writting (or trying to) a Console Application in C#. I has to be console. I remember back in the old days of Cobol (Unisys), Clipper and even Basic, I used to use a program (its name i cannot recall now...) where I designed the "screen" using this "program" and then saved it into an ASCII file. (thus, using 'extended' ASCII's like Lines, Corners, etc. and making screens look nicer and more professional). Then reading a...
18
34154
by: Ger | last post by:
I have not been able to find a simple, straight forward Unicode to ASCII string conversion function in VB.Net. Is that because such a function does not exists or do I overlook it? I found Encoding.Convert, but that needs byte arrays. Thanks, /Ger
31
3231
by: Claude Yih | last post by:
Hi, everyone. I got a question. How can I identify whether a file is a binary file or an ascii text file? For instance, I wrote a piece of code and saved as "Test.c". I knew it was an ascii text file. Then after compilation, I got a "Test" file and it was a binary executable file. The problem is, I know the type of those two files in my mind because I executed the process of compilation, but how can I make the computer know the type of a...
24
9080
by: ChaosKCW | last post by:
Hi I am reading from an oracle database using cx_Oracle. I am writing to a SQLite database using apsw. The oracle database is returning utf-8 characters for euopean item names, ie special charcaters from an ASCII perspective. I get the following error: > SQLiteCur.execute(sql, row)
7
4040
by: Jeffrey Spoon | last post by:
Hello, I'm a bit stuck trying to convert a text file which contains extended ASCII text and changing the ASCII values so they become readable. I do this by subtracting 127 from the ASCII value. However, at the moment I am just getting more gibberish so I'm probably doing something wrong. I tried using ASCII Encoding before to get the ASCII values. Although this worked for 0-127 ASCII values, extended ASCII gave strange values (such as 1992...
399
13032
by: =?UTF-8?B?Ik1hcnRpbiB2LiBMw7Z3aXMi?= | last post by:
PEP 1 specifies that PEP authors need to collect feedback from the community. As the author of PEP 3131, I'd like to encourage comments to the PEP included below, either here (comp.lang.python), or to python-3000@python.org In summary, this PEP proposes to allow non-ASCII letters as identifiers in Python. If the PEP is accepted, the following identifiers would also become valid as class, function, or variable names: Löffelstiel,...
4
25074
by: meendar | last post by:
Hi, I am having a character pointer which contains ascii values. i just want to convert all these ascii values to respective characters and again store it in another character pointer. Anybody please help in c language. Thanks in Advance.
9
4151
by: =?Utf-8?B?RGFu?= | last post by:
I have the following code section that I thought would strip out all the non-ascii characters from a string after decoding it. Unfortunately the non-ascii characters are still in the string. What am I doing wrong? Dim plainText As String plainText = "t═e" Dim plainTextBytes() As Byte Dim enc As Encoding = Encoding.ASCII plainTextBytes = enc.GetBytes(plainText)
0
9810
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look ! Part I. Meaning of...
1
10573
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
0
10241
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
1
7773
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
0
6973
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
0
5642
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
0
5812
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
1
4443
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
3
3102
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.