echo Problem Solving

echo " keywords)." \ "/>";
What is the meaning of \ and \ In this code? What's the point of having so many numbers?

Reply to discussion (solution)

\ is used to escape, avoid "conflicts
As for "really don't know how to say, HTML standard notation

Escape character!!!

Escape character so that the HTML structure of the output is guaranteed to be complete

Lazy words can be replaced by single quotation marks \ ", Output as a form, the browser can also recognize
But in the XML and XHTML standard, attribute values should be surrounded by double quotes instead of single quotes

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