字符序列& eth 和& para 是被浏览器解释为格式错误的字符转义序列（对于ð表示& eth; ，对于¶表示& para; ）。

The character sequences &eth and &para are being interpreted by your browser as malformed character escape sequences (ð for ð and ¶ for ¶).

如果要在HTML文档中打印查询，请先通过 htmlspecialchars（）运行查询。

If you want to print the query in an HTML document, run it through htmlspecialchars() first.