- /**
- *
- * Chinese string interception
- * @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;
- }
- }
复制代码
|