May I ask what character "'%c2%a0 ' is this?"

Today, "read text file", found that the two-character blank text, not a space. urlencodefound with this function.
What character is this? Why is there such a character appearing?

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Today, "read text file", found that the two-character blank text, not a space. urlencodefound with this function.
What character is this? Why is there such a character appearing?

Document: http://php.net/manual/zh/function.urlencode.php
This function facilitates the encoding of a string and its use in the request portion of the URL

I use JavaScript to test that the blank text seems to be a character

We found out %C2%A0 who it was, http://en.wikipedia.org/wiki/Non-breaking_space.
It's a Chinese word. 
Http://www.cnblogs.com/qdwang/archive/2012/06/18/2553635.html

As for why this is happening, is it because the rich text editor itself is dealing with whitespace.

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