Function: Removes slashes from a string or recursively removes slashes from strings within an array.

Function: Extracts and returns the first URL from passed content.

Function: Returns the regexp for common whitespace characters.

Function: Prints the important emoji-related styles.

Function: Adds a Target attribute to all links in passed content.

Function: Callback to add a target attribute to all links in passed content.

Function: Normalizes EOL characters and strips duplicate whitespace.

Function: Properly strips all HTML tags including script and style

Function: Sanitizes a string from user input or from the database.