Mohammad questions

• The real URI of a PHP file?
• is jQuery 1.4.2 compatible with Closure Compiler?
• Entirely Javascript Ajax spinner?
• How to remove trailing white spaces and " " from the start and end of a string in PHP?
• what is the best way to remove non numeric characters from the beginning of a string?
• sequential strpos() faster than a function with one preg_match?
• How to make sure a file handle has been closed before next operation?
• How to hide a Div when the scroll bar is moving with jQuery?
• Where to return false in a PHP function?
• strrpos in PHP finding last character position instead?

Mohammad answers