XQuery中使用了很多字符串函数, 但是这里我们使用的是选定的函数。
XQuery的常用字符串操作功能列表：
| Index |
Name |
Description |
| 1) |
string-length($ string as xs：string)as xs：integer |
它返回字符串的长度。 |
| 2) |
concat($ input as xs：anyatomictype？)as xs：string |
它返回连接的字符串作为输出。 |
| 3) |
string-join($ sequence as xs：string *, $ delimiter as xs：string)as xs：string |
它返回由定界符分隔的序列中项目的组合。 |
微信公众号
手机浏览(小程序)
Warning: get_headers(): SSL operation failed with code 1. OpenSSL Error messages:
error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed in
/mydata/web/wwwshanhubei/web/wp-content/themes/shanhuke/single.php on line
57
Warning: get_headers(): Failed to enable crypto in
/mydata/web/wwwshanhubei/web/wp-content/themes/shanhuke/single.php on line
57
Warning: get_headers(https://static.shanhubei.com/qrcode/qrcode_viewid_44492.jpg): failed to open stream: operation failed in
/mydata/web/wwwshanhubei/web/wp-content/themes/shanhuke/single.php on line
57
