The following  tutorial explains about the basic and advanced concepts of PHP  with practical examples. we are in progress of extending it.

Index
    
                 1. PHP Mailing Application - Sending as Attachment
                     
                 2. Mailing Application - Sending As Text

                 3. Socket Functions and IP Address

                 4. Calculation of Execution Time of PHP script

                 5. Perform FILE UPLOAD

                 6. FILE PATH

                 7.Color-Coding for script

                 8.Change the case of the keys in a an array

                 9.Display filename and extension separately