php字符串截取函数,支持中英文混体
php字符串截取函数,支持中英文混体,以前我们截取字符串都会用php自带的函数,今天我来看一下一款字符串截取函数,支持中英文混体的php代码实例吧.
php字符串截取函数代码如下:
- function cutstr($string, $sublen=10, $start = 0, $code = 'utf-8')
- {
- if($code == '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, $t_string);
- //if(count($t_string[0]) - $start > $sublen) return join('', array_slice($t_string[0], $start, $sublen))."...";
- return join('', array_slice($t_string[0], $start, $sublen));
- }
- else
- {
- $start = $start*2;
- $sublen = $sublen*2;
- $strlen = strlen($string);
- $tmpstr = '';
- for($i=0; $i<$strlen; $i++)
- {
- if($i>=$start && $i<($start+$sublen))
- {
- if(ord(substr($string, $i, 1))>129) $tmpstr.= substr($string, $i, 2);
- else $tmpstr.= substr($string, $i, 1);
- }
- if(ord(substr($string, $i, 1))>129) $i++;
- }//开源软件:phpfensi.com
- //if(strlen($tmpstr)<$strlen ) $tmpstr.= "...";
- return $tmpstr;
- }
- }