REGEX-Escape for: http://xxxcialisgt.com/ - cialis without a doctor prescription canadian pharmac...

Your Input:
Result, the escaped string:
http\:\/\/xxxcialisgt\.com\/ \- cialis without a doctor prescription canadian pharmacy viagra \viagra\<\/a\>

What must the escaping look like for:
http://xxxcialisgt.com/ - cialis without a doctor prescription canadian pharmacy viagra <a href="http://xxxcialisgt.com/#">viagra</a>

The excaped text for use in a regex is:
http\:\/\/xxxcialisgt\.com\/ \- cialis without a doctor prescription canadian pharmacy viagra \<a href\="http\:\/\/xxxcialisgt\.com\/#"\>viagra\<\/a\>