Regular expression too loose

Regular expression too loose

References

Reference NO 1

http://stackoverflow.com/questions/15203662/regular-expression-too-loose

Reference NO 2

http://www.regexmagic.com/strict.html

Reference NO 3

http://www.unix.com/shell-programming-scripting/211595-perl-regex-search-replace-has-flexible-match.html

Reference NO 4

http://regexlib.com/UserPatterns.aspx?authorId=e52f1f3c-83dd-4dad-a4c8-ed4745dbf278

Reference NO 5

http://www.onlamp.com/pub/a/onlamp/2003/08/21/regexp.html

Reference NO 6

http://www.rexegg.com/regex-lookarounds.html

Reference NO 7

http://dev.mysql.com/doc/refman/5.1/en/regexp.html

Reference NO 8

http://www.lunametrics.com/regex-book/Regular-Expressions-Google-Analytics.pdf