Category Archives: Coding

All kinds of Programming.

Backup mysql database with php and zip it

By | May 1, 2009

Many php applications prefer to backup the mysql database from within the application and save it as an archive. The mysqldump commandline utility can be used to perform this function of backing up a mysql database as sql file. The command would be like this : mysqldump –user=$username –password=$password –opt $db_name > $dir/backup.sql The above… Read More »

How to code a TCP Connect Port Scanner in C with Winsock

By | August 1, 2020

Tcp connect port scanning TCP connect() scanning is the most basic form of TCP scanning. The program performs a connect() command on those ports of the target machine which are to be checked. If the port is open then the connect() command will succeed and a connection will be established. If the port is closed… Read More »

Php – parse text and convert urls into hyperlinks

By | May 10, 2020

The following function will parse a given text and convert all the urls into links. It does this using regular expressions. It converts email addresses to mailto links as well. Code function parse_links($str) { $str = str_replace(‘www.’, ‘http://www.’, $str); $str = preg_replace(‘|http://([a-zA-Z0-9-./]+)|’, ‘<a href="http://$1">$1</a>’, $str); $str = preg_replace(‘/(([a-z0-9+_-]+)(.[a-z0-9+_-]+)*@([a-z0-9-]+.)+[a-z]{2,6})/’, ‘<a href="mailto:$1">$1</a>’, $str); return $str; }

Run php scripts from cron

By | March 22, 2009

Automatic Running In a web application there are many cases, when a certain piece of code or script needs to run automatically in the background to perform certain tasks, without the need of any user to start it. Like scraping, extracting or crawling data from web or perform some regular tasks like sending emails, system… Read More »

Get real IP address of user in php

By | December 4, 2008

Client IP address Php applications are mostly web based and often need to get the ip address of the user who is connecting to the application. Ip address is required for various logging purpose, geolocation service etc. The most common way to get the ip address of a remote user is by using the superglobal… Read More »

Remote Login with Curl PHP

By | November 19, 2008

Remote login with CURL The curl extension of php can be used to open remote webpages by both GET and POST methods. There are many situations when you need a php script to login into a website and open a certain page. For example when you are writing a bot or web scraper. To login… Read More »