regular expression match text between quotes code example

Example 1: regex to get items between quotes

(["'])(?:(?=(\\?))\2.)*?\1

Example 2: regex to match string not in between quotes

((?!\'[\w\s]*[\\']*[\w\s]*)foe(?![\w\s]*[\\']*[\w\s]*\'))

Example 3: regular expression match text between quotes

(["'])(?:(?=(\\?))\2.)*?\1

Example 4: regex to match string not in between quotes

('[^'\\]*(?:\\.[^'\\]*)*')|\bfoe\b