Electronic Gadget

The Internet has erased the boundaries of time and geography, and has made the world a single and infinite marketplace. Having a well-designed website is important to target the right customers and capture your largest market share. The trend of using the World Wide Web for business transactions is spreading day-by-day. Offline businesses have their own constraints; go to www.master-web-graphics.com which often can be overcome online. You don’t have to be physically present to carry out buying or selling transactions.

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Web design and development consultations are helpful in making important decisions related to product positioning and ensuring that online communication strategies are in accordance with offline business plans. Let the web consultants know your budget, exact expectations and requirements so that they can plan accordingly. These website consultants of Los Angeles help in building and establishing a strong brand identity for your business. Apart from designing issues, they also give solutions to technical problems.

Web consultants carry out two types of consulting services: web design service consultation and website promotion service consultation. Professionally crafted websites yield higher traffic and ultimately increase profits. They have greater success in expanding a business’ customer base. A well planned website ranks high in search engines and continues to draw traffic.

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After a website is designed, its development is the next step, and a web development consultation can prove to be very valuable. Things to consider that a web consulting firm can be helping in are the submission of website links in various search engines and online directories, submission of articles and blogs, the formation of suitable RSS feeds on your site, allotting appropriate backlinks on your site, and collecting regular feedback about your page position in different search engines. A web consulting firm will help you better manage your site overall.

In conclusion, working with a professional web consulting firm helps you develop a planned course of action and secures your online business future.

PHP- Automated Housekeeping

Queries are run by users through the web interface and by administrators through either administrative web interfaces or from the MySQL command interpreter. However, sometimes automated querying is necessary to produce periodic reports, update data, or delete temporary data. We discuss how queries can be automated in this section.

To show how queries can be automated, consider an example from the online winestore. The shopping cart in the online winestore is implemented using the winestore database. As discussed in Chapter 12, when an anonymous user adds a wine to their shopping basket, an order row is added to the orders table. The row is for a dummy customer with a cust_id=-1, and the next available order_id for this dummy customer. A related items row is created for each item in the shopping cart. The order_id is maintained in the session variable order_no so that orders by different anonymous customers aren’t confused.

Our system requirements in Chapter 1 specify that if a customer doesn’t purchase the wines in their shopping cart within one day, then the shopping cart should be emptied. This is an example of a DELETE operation that should be automated. It is impractical to require the administrator to run this query each day to remove junk data.

The following query can be run from the Linux shell to remove all orders rows that are more than one day old and are for the dummy customer:

% /usr/local/mysql/bin/mysql -uusername -psecret

-e ‘USE winestore; DELETE FROM orders WHERE

unix_timestamp(date) <

(unix_timestamp(date_add(now( ), interval -1 day)))

AND cust_id = -1;’

The MySQL time and date function unix_timestamp( ) converts a timestamp attribute to an integer that is accurate to the nearest second. In this query, we compare the value of the entry in the orders table with the value of exactly one day earlier from the current date and time. If the row is older than one day, then it is deleted. The same query works for the items table, when orders is replaced with items in the FROM clause.

13.1.1 cron Jobs

Having designed and tested the query, it can be inserted into a Unix cron table to automate the operation. The crond daemon is a process that runs by default in a Linux installation and continually checks the time. If any of the entries in user tables match the current time, then the commands in the entries are executed. Consider an example:

30 17 * * mon-fri echo ‘Go home!’

This prints the string at 5:30 p.m. each working day. The two asterisks mean every day of the month, and every month of the year respectively. The string mon-fri means the days Monday to Friday inclusive. More details about cron can be found by running man crontab in a Linux shell.

We can add our housekeeping query to our cron table by running:

% crontab -e

This edits the user’s cron table.

We have decided that the system should check for old shopping carts every 30 minutes. To do so, we add the following two lines to the file:

0 * * * * /usr/local/mysql/bin/mysql -uusername -psecret

-e ‘USE winestore; DELETE FROM orders WHERE

unix_timestamp(date) <

(unix_timestamp(date_add(now( ), interval -1 day)))

AND cust_id = -1;’

30 * * * * /usr/local/mysql/bin/mysql -uusername -psecret

-e ‘USE winestore; DELETE FROM items WHERE

unix_timestamp(date) <

(unix_timestamp(date_add(now( ), interval -1 day)))

AND cust_id = -1;’

The first line contains the complete query command for the orders table from earlier in this section, and the second line the items query. The shopping cart orders DELETE query runs exactly on each hour, while the items DELETE query runs at 30 minutes past each hour. Different times are used to balance the DBMS load.

Reports, updates, delete operations, and other tasks can be added to the cron table in a similar way. For example, we can output a simple report of the number of bottles purchased yesterday and send this to our email address each morning:

0 8 * * * mon-fri /usr/local/mysql/bin/mysql -uusername

-psecret -e ‘USE winestore; SELECT sum(qty) FROM

items WHERE unix_timestamp(date) >

(unix_timestamp(date_add(now( ), interval -1 day))) AND

cust_id != -1;’ | mail help@webdatabasebook.com

We could also have automatically written the information to a log file or to a table in the database.

More PHP Tutorial

In today’s modern society, more and more people are now using the internet for cheaper communication, for shopping and also for business. Many people are now taking advantage of the internet technology to transact business. Some even considered using the internet to pay for their bills.

Because of this, life is easier. By having the ability to shop for your groceries in the internet, you no longer have to actually go to the supermarket to purchase the goods you need. You can easily shop for your groceries online and pay for it by using your credit card.

There are so many conveniences that the internet can bring to your life. However, because more and more people are now using the internet for financial transactions, there are also some people who would take advantage of the internet to steal from you.

These people are called hackers. They are the new breed of criminals that will take advantage of the internet to steal from other people for personal gains. They develop programs or software that is circulating in the internet today and eventually enter someone’s computer without the person who owns the computer knowing about it.

The software can be anything. It can be viruses, it can be spywares, it can be adwares, and it can even be Trojans and worms. All of these kinds of malicious software are programmed to destroy your computer or act as a surveillance device inside your PC.

It is a fact that many people have been victimized by these different kinds of malicious software. Surfing the internet may also mean getting malicious software in your PC. In fact, it is very easy to get these software installed in your computer. You might download files that may contain malicious software. Once you did, it will automatically work to steal information from your computer or destroy your irreplaceable files.

This is why you need to protect yourself by installing internet security software in your computer. One effective and trusted name in internet security is called Pc-cillin internet security. Pc-cillin is developed by Trend Micro Enterprises and is one of the most used internet security software in the world.

The latest version of Pc-cillin offers a wide range of internet security and protection from different malicious software circulating the internet today. Here are the following features offered by Pc-cillin to protect you and your computer from the malicious software in the internet:

• Antivirus security – Pc-cillin internet security is integrated with a powerful antivirus software that is able to detect viruses before it can even invade your PC. It will remove viruses or clean your infected files. Pc-cillin antivirus security will scan downloads from the internet, scan incoming files from another computer and will also scan files inside a removable media. It will also automatically update its virus definition through the internet to keep the antivirus effective against new viruses popping out in the internet on a daily basis.

• Spyware protection – Pc-cillin will block malicious software from entering your computer, such as spyware, adware, grayware, and root kits. Pc-cillin will prevent identity thieves to spy on your computer and obtain any personal or financial information that your PC may contain.

• TrendSecure – Pc-cillin internet security software is also integrated with Transaction Guard that will protect your online transactions.

• Personal Firewall – This feature will intercept any hackers and computer viruses that may attempt to enter your computer.

• Advanced Parental Controls – This particular tool will manage your children’s internet usage. It will block any websites that contains inappropriate content, such as pornography and violence.

These are just some of the features that Pc-cillin Internet Security offers. There are a lot more benefits that you can take advantage of in order to protect yourself from other people and malicious software that may try and use the internet to steal from you or destroy your computer.