Declined Credit Card Transaction appear as approved by Bank

Feb
04

Every once in a while customers call us at Kiddie Toys, and tell us that they are seeing "unauthorized" credit card charge(s) on their bank account. Customers attempted to place an order online, and the credit card declines for some reason but the bank account of a buyer shows that the charge went through. We (merchant) look up our payment gateway and see multiple "declined" transactions. Customers ask us to remove the charge(s) for those transactions that were never approved in the first place. So, what is going on here?

How to create a 301 redirect?

Feb
02

As described on URL Canonicalization article we published in March, having a unique URL ("canonicalization") for each webpage is important in improving your "Pagerank". Canonicalization is accomplished by redirecting non-standard webpages to a preferred ("standard") webpage.

URL Canonicalization

Feb
02

One of the first things discussed when beginning SEO project is the URL canonicalization. You may argue that the impact on having multiple URLs resolving to a same page may not have huge effect on SEO (if you use it consistently internally), but it certainly doesn't hurt to normalize the URL so that only one Url serves a single webpage. Implementation is not too difficult for most webmasters, and there is an evidence that URL canonicalization will have a positive effect on your SEO effort.

How to display PHP errors?

Feb
02

On a production server, you will definitely want to turn off errors from displaying on the screen due to security and usability reasons but what do you do when you're on a development machine trying to debug a malfunctioning PHP script? PHP gives a programmer an ability to control logging of errors, and the types of errors to be displayed. You may enable PHP error display in one of two ways.

1. You may turn on error display at the script level when a server level error display is turned off.

How to upgrade PHP 5.1.6 to PHP 5.3.x on CentOS?

Feb
02

I have been using CentOS 5.x for several years now, but PHP is still at 5.1.6 on the latest CentOS 5.7. More and more applications are now require higher versions of the PHP including Drupal 7 and Wordpress 3.2. I have upgraded a number of my servers to PHP 5.3.x over the course of last couple of years, and demand is higher each year. I have been using several custom repositories to upgrade the PHP to 5.3.x in the past, but using php53 packages makes it easier than ever to upgrade php to 5.3.x.

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