This page explains that the escape slash "\" allows PHP to ignore or force PHP to change how it is reading the character that it precedes. For example, to force PHP to start a new line I would use the command "\n" which moves the text to the next line. To include quotes within your quotation marks in PHP you must include "\"" to tell the code that you want to allow that extra quotation mark. For each side of the quotation mark you must have a single escape slash and double quotation mark.
I want this to be on two lines.
This is a new line in a quote.