- /**
- *
- * 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 {
- 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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