convert_cyr_string> <chr
Last updated: Fri, 03 Feb 2012

chunk_split

(PHP 4, PHP 5)

chunk_split — Divide uma string em pequenos pedaços

Descrição

string chunk_split ( string $body [, int $chunklen [, string $end ]] )

Pode dividir uma string em pequenos pedaços que são úteis para ex. converter a saída de base64_encode() para semânticas RFC 2045 . Ela insere end a cada chunklen caracteres.

Parâmetros

body

A string a ser dividida.

chunklen

O tamanho do pedaço. Padrão para 76.

end

A seqüência de terminação. Padrão para "\r\n".

Valor Retornado

Retorna a string dividida.

Exemplos

Exemplo #1 Exemplo da chunk_split()

<?php
// format $data using RFC 2045 semantics
$new_string = chunk_split(base64_encode($data));
?>

Veja Também



convert_cyr_string> <chr
Last updated: Fri, 03 Feb 2012
 
User Contributed Notes
chunk_split
belal dot nabeh at gmail dot com
10-Aug-2010 05:02
If you are using UTF-8 charset you will face a problem with Arabic language
to solve this problem i used this function

<?php
function chunk_split_($text,$length,$string_end)
{
    $text = iconv("UTF-8","windows-1256",$text);
    $text = str_split($text);
    foreach($text as $val)
    {
        if($a !== $val)
        {
            $a = $val;
            $x = 0;
        }else{
            $a = $val;
            $x++;
        }
        if($x > $length)
        {
            $new_text .= $val.$string_end;
            $x = 0;
        }else
        {
             $new_text .= $val;
        }
       
    }
    $new_text = iconv("windows-1256","UTF-8",$new_text);
    return $new_text;
}
?>
Peter from dezzignz.com
05-Apr-2010 03:07
Oops. Here is a correction for the post below.

<?php

function mbStringToArray ($str) {
    if (empty($str)) return false;
    $len = mb_strlen($str);
    $array = array();
    for ($i = 0; $i < $len; $i++) {
        $array[] = mb_substr($str, $i, 1);
    }
    return $array;
}

function mb_chunk_split($str, $len, $glue) {
    if (empty($str)) return false;
    $array = mbStringToArray ($str);
    $n = -1;
    $new = '';
    foreach ($array as $char) {
        $n++;
        if ($n < $len) $new .= $char;
        elseif ($n == $len) {
            $new .= $glue . $char;
            $n = 0;
        }
    }
    return $new;
}

// DEMO:
$str = '一二一二一二一二一二';
echo mb_chunk_split($str, 2, '*<br />');

// produces this output:
一二*
一二*
一二*
一二*
一二

?>
Peter from dezzignz.com
05-Apr-2010 01:30
chunk_split() is not multibyte safe. If you ever run into needing the function that is multibyte safe, here you go:

<?php

function mbStringToArray ($str) {
    if (empty($str)) return false;
    $len = mb_strlen($str);
    $array = array();
    for ($i = 0; $i < $len; $i++) {
        $array[] = mb_substr($str, $i, 1);
    }
    return $array;
}

function mb_chunk_split($str, $len, $glue) {
    if (empty($str)) return false;
    $array = mbStringToArray ($str);
    $n = 0;
    $new = '';
    foreach ($array as $char) {
        if ($n < $len) $new .= $char;
        elseif ($n == $len) {
            $new .= $glue . $char;
            $n = 0;
        }
        $n++;
    }
    return $new;
}

?>
dampee at earthlink dot net
20-Nov-2009 07:10
I've found this quite useful for simulating various kinds of shuffles with cards.  It is humorous but can imitate multiple deck cuts and other (imperfectly) random events.

<?php
function truffle_shuffle($body, $chunklen = 76, $end = "\r\n")
{
     $chunk = chunk_split($body, $chunklen, "-=blender=-");
     $truffle = explode("-=blender=-",$chunk);
     $shuffle = shuffle($truffle);
     $huknc = implode($end,$shuffle);
     return $huknc;
}
?>
tim at weird spots in my crotch dot com
07-May-2008 11:29
@Royce

I think this is better, since you can still use the ampersand in your text:

<?php
function HtmlEntitySafeSplit($html,$size,$delim)
{
  $pos=0;
  for($i=0;$i<strlen($html);$i++)
  {
    if($pos >= $size && !$unsafe)
    {
      $out.=$delim;
      $unsafe=0;
      $pos=0;
    }
    $c=substr($html,$i,1);
    if($c == "&")
      $unsafe=1;
    elseif($c == ";")
      $unsafe=0;
    elseif($c == " ")
      $unsafe=0;
    $out.=$c;
    $pos++;
  }
  return $out;
}
?>
neos at blizzz dot ru
03-May-2008 08:38
"version" of chunk_split for cyrillic characters in UTF-8

public function UTFChunk($Text,$Len = 10,$End = "\r\n")
{
    if(mb_detect_encoding($Text) == "UTF-8")
    {
        return mb_convert_encoding(
                chunk_split(
                    mb_convert_encoding($Text, "KOI8-R","UTF-8"), $Len,$End
                ),
                "UTF-8", "KOI8-R"
            );
    } else
    {
        return chunk_split($Text,$Len,$End);
    }
}

this is example for russian language
Royce
15-Apr-2008 09:31
Here's a version of Chunk Split I wrote that will not split html entities. Useful if you need to inject something in html (in my case, <wbr/> tags to allow for long text wrapping).

<?php
function HtmlEntitySafeSplit($html,$size,$delim)
{
  $pos=0;
  for($i=0;$i<strlen($html);$i++)
  {
    if($pos >= $size && !$unsafe)
    {
      $out.=$delim;
      $unsafe=0;
      $pos=0;
    }
    $c=substr($html,$i,1);
    if($c == "&")
      $unsafe=1;
    elseif($c == ";")
      $unsafe=0;
    $out.=$c;
    $pos++;
  }
  return $out;
}
?>
lehongviet at gmail dot com
29-Jun-2007 12:23
This function works well to cut long para for preview without cutting word. Good for Unicode such as &#7789;

function split_hjms_chars($xstr, $xlenint, $xlaststr)
{
    $xlenint = strpos($xstr," ",$xlenint);
   return substr($xstr,0,$xlenint).$xlaststr;
}
mark [at] d0gz [dot] net
10-Apr-2007 07:12
When using ssmtp for simple command line mailing:

$mail_to = "destination@emailbox.com";
$msg = "this would be an actual base64_encoded gzip msg";
$date = date(r);
$mail  = "X-FROM: root@sender.org \n";
$mail .= "X-TO: ".$mail_to. " \n";
$mail .= "To: ".$mail_to. " \n";
$mail .= "Date: $date \n";
$mail .= "From: root@sender.org \n";
$mail .= "Subject: lifecheck \n";
$mail .= $msg." \n";
exec("echo '$mail' | /usr/sbin/ssmtp ".$mail_to);

be sure to invoke chunk_split() on your message body - ssmtp becomes unhappy with long lines and will subsequently trash  your message.
05-Mar-2007 11:45
in response to "hansvane at yahoo dot com dot ar"

you can do that ALOT easier:

<?php
function split_hjms_chars($xstr, $xlenint, $xlaststr)
{
   return substr($xstr,0,$xlenint).$xlaststr;
}
?>
hansvane at yahoo dot com dot ar
21-Jan-2007 08:06
This function is very simple and many other functions make this on PHP 5 and even some ones in 4 the good think about this one is that work on php 3.0.6 and 4

function split_hjms_chars($xstr, $xlenint, $xlaststr)
{
    $texttoshow = chunk_split($xstr,$xlenint,"\r\n");
    $texttoshow  = split("\r\n",$texttoshow);
    $texttoshow = $texttoshow[0].$xlaststr;
    return $texttoshow;
}

// For use

echo split_hjms_chars("This is your text",6,"...");

// Will return

This i...

It is useful to cut long text on preview lists and if the server it's old.

Hope it helps some one. Hans Svane
chris AT w3style.co DOT uk
14-Aug-2006 09:32
I'm not sure what versions this also occurs in but the output of chunk_split() in PHP 5.0.4 does not match the output in other versions of PHP.

In all versions of PHP I have used, apart from 5.0.4 chunk_split() adds the separator (\r\n) to the end of the string.  But in PHP 5.0.4 this does not happen.  This had a fairly serious impact on a library I maintain so it may also affect others who are not aware of this.
xamine at gmail dot com
04-Jun-2006 08:06
In reply to "adrian at zhp dot inet dot pl" digit grouping function:
<?php
    $number = strrev(chunk_split (strrev($number), 3,' '));
    //If $number is '1234567', result is '1 234 567'.
?>

There is a much more simple way of doing this, by using the built-in number_format() function.

<?php
   $number = number_format($number,2,"."," ");

   //This will round $number to 2 decimals, use the dot (".")
   //as decimal point, and the space (" ") as thousand sepparator.

?>
kevin @t hyguard,com
03-Oct-2005 04:08
Not quite completely obvious, but...

you can un_chunk_split() by:

$long_str = str_replace( "\r\n", "", $chunked_str );
harish at thespitbox dot net
30-Jul-2005 02:45
another way to group thousands in a number, which is much simpler, is built into PHP :)

www.php.net/number_format
adrian at zhp dot inet dot pl
08-Jul-2005 11:28
If you need to output number formated with thousand's separator, just use it:

$number = strrev(chunk_split (strrev($number), 3,' '));

If $number is '1234567', result is '1 234 567'.
Kevin
25-Jun-2005 01:10
To phpkid:

This is a much simpler solution.

<?php
function longWordWrap($string) {
    $string = str_replace("\n", "\n ", $string); // add a space after newline characters, so that 2 words only seperated by \n are not considered as 1 word
    $words = explode(" ", $string); // now split by space
    foreach ($words as $word) {
        $outstring .= chunk_split($word, 12, " ") . " ";
    }
    return $outstring;
}
?>
Chris
15-Jun-2005 11:18
@phpkid:

You can avoid such long complex code and just use some CSS stuff.

Just add style="table-layout:fixed" in your <td > tag and your problem will be solved.

ciao
phpkid
28-May-2005 07:47
Well I have been having issues with a shoutbox I am coding it would keep expanding the <TD> if there were large words in it but I fixed it with this:

function PadString($String){
    $Exploded = explode(" ", $String);
    $Max_Parts = count($Exploded);
   
    $CurArray = 0;
    $OutString = '';
    while($CurArray<=$Max_Parts)
    {
        $Peice_Size = strlen($Exploded[$CurArray]);
        if($Peice_Size>15)
        {
            $OutString .= chunk_split($Exploded[$CurArray], 12, " ");
            $CurArray++;
        } else {
            $OutString .= " ".$Exploded[$CurArray];
            $CurArray++;
        }
    }
   
    return $OutString;
}
mv@NOSPAM
24-Jan-2004 05:39
the best way to solve the problem with the last string added by chunk_split() is:

<?php
$string = '1234';
substr(chunk_split($string, 2, ':'), 0, -1);
// will return 12:34
?>
Danilo
10-Dec-2003 12:51
>> chunk_split will also add the break _after_ the last occurence.

this should be not the problem

substr(chunk_split('FF99FF', 2, ':'),0,8);
will return FF:99:FF
sbarnum at pointsystems dot com
20-Apr-2001 04:46
[Editor's note: You can always use wordwrap('FF99FF', 2, ':', 2); to avoid this]

chunk_split will also add the break _after_ the last occurence.  So, attempting to split a color into base components,
chunk_split('FF99FF', 2, ':');
will return FF:99:FF:

convert_cyr_string> <chr
Last updated: Fri, 03 Feb 2012