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字符串截取函数(支持中英文混体)_PHP教程

WBOY
WBOYOriginal
2016-07-20 11:01:39747browse

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。  

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教程自带的函数,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。
*/

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);
 $tmps教程tr = '';
 for($i=0; $i  {
 if($i>=$start && $i  {
 if(ord(substr($string, $i, 1))>129) $tmpstr.= substr($string, $i, 2);
 else $tmpstr.= substr($string, $i, 1);
 }
 if(ord(substr($string, $i, 1))>129) $i++;
 }
 //if(strlen($tmpstr)  return $tmpstr;
 }
}


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