PHP截取固定长度字符串函数
<?php
function toFixLen($str,$len){ //固定长度字符串的截取
if($len>=strlen($str)||!$len) return $str;
$len-=3;
$tempstr1 = substr($str,0,$len); //截取字符串
$tempstr2 = preg_replace('/([\x81-\xff]+)$/ms','',$tempstr1,1); //去掉结尾的连续汉字字符
if(!is_int((strlen($tempstr1)-strlen($tempstr2))/2)){ //去掉的字符为奇数?
$tempstr1 = substr($str,0,$len-1);
}
return $tempstr1."…";
}
?>
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