PHPは文字のブレークポイントで文字の実装コードを切断する

 
  
//     (word break)，               。              。 
  
// 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, 0, $breakpoint) . $pad; 
  
} 
  
} 
  
return $string; 
  
} 
  
/***** Example ****/ 
  
$short_string=myTruncate($long_string, 100, ' ');