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text\u003c/pre\u003e在出现\u003cem\u003e\u003ccode\u003edelimiter\u003c/code\u003e\u003c/em\u003e时拆分\u003cem\u003e\u003ccode\u003estring\u003c/code\u003e\u003c/em\u003e，并返回第\u003cem\u003e\u003ccode\u003en\u003c/code\u003e\u003c/em\u003e个字段（从一开始计数）；如果\u003cem\u003e\u003ccode\u003en\u003c/code\u003e\u003c/em\u003e为负数，则返回倒数第 |\u003cem\u003e\u003ccode\u003en\u003c/code\u003e\u003c/em\u003e| 个字段。","SourceRevision":"ca936764","ContentHash":"962976c316f396d787ace297a412216161fda957ec03c86b8f4277583f91c534","Payload":{"description_zh":"在出现delimiter时拆分string，并返回第n个字段（从一开始计数）；如果n为负数，则返回倒数第 |n| 个字段。","description_zh_html":"在出现\u003cem class=\"parameter\"\u003e\u003ccode\u003edelimiter\u003c/code\u003e\u003c/em\u003e时拆分\u003cem class=\"parameter\"\u003e\u003ccode\u003estring\u003c/code\u003e\u003c/em\u003e，并返回第\u003cem class=\"parameter\"\u003e\u003ccode\u003en\u003c/code\u003e\u003c/em\u003e个字段（从一开始计数）；如果\u003cem class=\"parameter\"\u003e\u003ccode\u003en\u003c/code\u003e\u003c/em\u003e为负数，则返回倒数第 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