MySQL - INSERT IGNORE INTO

When you try to insert a new record in MySQL and the primary key specified in the insert query already exists, then an error will occur an...

INSERT INTO vs REPLACE INTO

The MySQL REPLACE statement is a MySQL extension to the SQL standard. The MySQL REPLACE statement works like the INSERT statement with the...

PHP -Regular Expressions

Regular expressions are a powerful tool for examining and modifying text. Regular expressions themselves, with a general pattern notation...

PHP $_SERVER

$_SERVER is a PHP super global variable which holds information such as headers, paths, and script locations. The entries in this array a...

Javascript Periodic Table of the Elements

Two steps to make the periodic system of elements with javascript Source Code  Paste this source code into the designated areas. Paste...

PHP Login Page Example

This post for PHP beginners Login Page Example. I want to explain creating database, posting form values, storing the session value and de...

Create a Date With PHP

Create a Date With PHP mktime() The optional  timestamp  parameter in the date() function specifies a timestamp. If you do not specify ...

The PHP Date() Function

The PHP date() function formats a timestamp to a more readable date and time. Syntax :  date( format , timestamp ). Parameter Descripti...

PHP, Rounding and Formatting Numbers

1. Round () - Rounding Numbers The PHP function round () is used to round numbers up or down based on their value (Any decimal .5 or ab...

Stop hotlinking or Serve alternate content

Using .htaccess, you can disallow hot linking on your server, so those attempting to link to an image, video, music, flash, zip/rar, CSS fi...