programming chelahmy

PHP runs on the server side and behaves like a function that return a value against the given arguments. A remote client may call this function and expect a specified return value and nothing else. So how do we debug this function ? It must not return debugging messages since the client is never designed to handle them. We must never burden any client to handle debugging messages. If we run PHP through Apache server then we can use the error log to keep our debugging messages. It may not be the best way to do it. But we only want to talk about this approach now. Error Logs The Apache error log files generally can be found in the following directory: var/log/apache2 We issue the following command from within the directory to read the latest error messages: # tail error.log The tail command reads the last few lines from the error.log file and prints them on the terminal. If we need to read a specific number of lines from the end of the file then we can specify the -n opti