/** |
* |
* 中文字符串截取 |
* @param string $string |
* @param int $sublen |
* @param int $start |
* @param string $code |
*/ |
function substr_zh ( $string , $sublen , $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 ++; |
} |
if ( strlen ( $tmpstr ) < $strlen ) $tmpstr .= "..." ; |
return $tmpstr ; |
} |
} |
初级程序员
by: linux 发表于:2015-11-02 16:15:10 顶(0) | 踩(0) 回复
干嘛用的,执行了几遍,看不懂
回复评论