感谢某位兄弟写的CutString函数
function CutString($_String, $_Length, $_Start=0, $_Encode='GBK') { $v = 0; if($_Encode == 'UTF-8') { $_Pa = "/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|\xe0[\xa0-\xbf][\x80-\xbf]|[\xe1-\xef][\x80-\xbf][\x80-\xbf]|\xf0[\x90-\xbf][\x80-\xbf][\x80-\xbf]|[\xf1-\xf7][\x80-\xbf][\x80-\xbf][\x80-\xbf]/"; preg_match_all($_Pa, $_String, $_Rarray); $_SLength = count($_Rarray[0]); if($_SLength < $_Length) return $_String; for($i=$_Start; $i<$_SLength; $i++) { if($v >= $_Length * 2 - 1) return $_RS.'..'; if(ord($_Rarray[0][$i]) > 129) $v += 2; else $v++; $_RS .= $_Rarray[0][$i]; } } else { $_Start = $_Start * 2; $_Length = $_Length * 2; $_Len = strlen($_String); if($_Len < $_Length) return $_String; $_Rstring= ''; for($i=$_Start; $i<$_Len; $i++) { if($v >= $_Length - 1) return $_Rstring.'..'; if(ord(substr($_String, $i, 1)) > 129) { $_Rstring .= substr($_String, $i, 2); $v += 2; $i++; } else { $_Rstring .= substr($_String, $i, 1); $v++; } } return $_Rstring.'..'; } }
|
请发表评论