To remove HTML tags from a string, you can use a regular expression to match and replace the tags with an empty string.
To remove new lines from a string and replace them with a single empty space in PHP, you can use the str_replace function.
To split a string in Java by new line, you can use the split method of the String class and pass it the regular expression "\n" or "\r\n", depending on the platform you are running on.
You can use the split() method to split a string on whitespace in Python.
In Java, you can use the following regular expression to match any amount of whitespace: