How to improve truncate in smarty to support Chinese, smartytruncate_PHP tutorial

How to improve truncate in smarty to support Chinese, smartytruncate

This article describes the method of improving truncate in smarty to support Chinese. Share it with everyone for your reference, the details are as follows:

Smarty’s truncate does not support Chinese interception. Just change modifier.truncate.php in the plugins in the smarty directory to look like this

<&#63;php
/*
* Smarty plugin
* -------------------------------------------------------------
* Type:   modifier
* Name:   truncate
* Purpose: Truncate a string to a certain length if necessary,
*      optionally splitting in the middle of a word, and 
*      appending the $etc string.
* Update:  change substr to msubstr and add fun msubstr.so it
*      can bu used in chinese charset.
* -------------------------------------------------------------
*/
function smarty_modifier_truncate($string, $length = 80, $etc = '...', $break_words = false)
{
  if ($length == 0)
    return '';
  if (strlen($string) > $length) {
    $length -= strlen($etc);
    if (!$break_words)
      $string = preg_replace('//s+&#63;(/S+)&#63;$/', '', SubstrGB($string, 0, $length+1));
    return SubstrGB($string, 0, $length).$etc;
  } else
    return $string;
}
function SubstrGB($str,$start,$len){
  for($i=0;$i<$start+$len;$i++){
    $tmpstr=(ord($str[$i])>=161 && ord($str[$i])<=254&& ord($str[$i+1])>=161 && ord($str[$i+1])<=254)&#63;$str[$i].$str[++$i]:$tmpstr=$str[$i];
    if ($i>=$start&&$i<($start+$len))$tmp .=$tmpstr;
  }
  return $tmp;
}
/* vim: set expandtab: */
&#63;>

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I hope this article will be helpful to everyone’s PHP program design based on smarty templates.

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