/**
 * 在字符断点处截断文字
 *
 * @param 
 * @author 编程之家 jb51.cc jb51.cc
 **/
 // Please acknowledge use of this code by including this header.
 function myTruncate($string,$limit,$break=".",$pad="...") {
 // return with no change if string is shorter than $limit
 if(strlen($string) <= $limit)
 return $string;
 // is $break present between $limit and the end of the string?
 if(false !== ($breakpoint = strpos($string,$break,$limit))) {
 if($breakpoint < strlen($string) - 1) {
 $string = substr($string,$breakpoint) . $pad;
 }
 }
 return $string;
 }
 /***** Example ****/
 $short_string=myTruncate($long_string,100,' ');


/***   代码来自编程之家 jb51.cc（jb51.cc）   ***/