chunk_split()

(PHP 4, PHP 5, PHP 7)

将字符串分割成小块

说明

使用此函数将字符串分割成小块非常有用。例如将base64_encode()的输出转换成符合 RFC 2045 语义的字符串。它会在每$chunklen个字符后边插入$end。

参数

要分割的字符。

分割的尺寸。

行尾序列符号。

返回值

返回分割后的字符。

范例

Example #1chunk_split()例子

参见

• str_split()将字符串转换为数组
• explode()使用一个字符串分割另一个字符串
• split() 用正则表达式将字符串分割到数组中
• wordwrap()打断字符串为指定数量的字串
• » RFC 2045

An alternative for unicode strings;

Yar�
�m k
ilo 
çay
, ya
rım
 kil
o ş
eker
Yarı
m ki
lo ç
ay, 
yarı
m ki
lo ş
eker

As an alternative for qeremy [atta] gmail [dotta] com
There is much shorter way for binarysafe chunking of multibyte string:

р�
�с
с�
�и
й
рус
ски
й

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.

The description of the function is slightly inaccurate. A trailing $end is also added.

the best way to solve the problem with the last string added by chunk_split() is:

If you are using UTF-8 charset you will face a problem with Arabic language
to solve this problem i used this function

Not quite completely obvious, but... 
you can un_chunk_split() by:
$long_str = str_replace( "\r\n", "", $chunked_str );

"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

another way to group thousands in a number, which is much simpler, is built into PHP :)
www.php.net/number_format

Important note is the maximum line length and the recommended one. The standard says:
"Lines in a message MUST be a maximum of 998 characters excluding the CRLF, but it is RECOMMENDED that lines be limited to 78 characters excluding the CRLF. "
See PHP manual for chunk_split() Which is set to 76 characters long chunk and "\r\n" at the end of line by default.

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,  tags to allow for long text wrapping).

>> 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

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.

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.

In reply to "adrian at zhp dot inet dot pl" digit grouping function:

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

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

Well I have been having issues with a shoutbox I am coding it would keep expanding the  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;
  $OutString = '';
  while($CurArray15)
    {
      $OutString .= chunk_split($Exploded[$CurArray], 12, " ");
      $CurArray++;
    } else {
      $OutString .= " ".$Exploded[$CurArray];
      $CurArray++;
    }
  }
  
  return $OutString;
}
@Royce
I think this is better, since you can still use the ampersand in your text:
chunk_split() is not multibyte safe. If you ever run into needing the function that is multibyte safe, here you go:
To phpkid:
This is a much simpler solution.
 

鹏仔微信 15129739599 鹏仔QQ344225443 鹏仔前端 pjxi.com 共享博客 sharedbk.com