PHP在字符断点处截断文字

[php]代码库

// Original PHP code by Chirp Internet: www.chirp.com.au 
// 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, ' ');