Many IT companies tend to use ASP shopping cart and backend scripts is because ASP integrates very well with Access, Excel and other Microsoft software. Active Server Pages or ASP has long been an option for creating dynamic web content. Active Server Pages facilitates the ability to use databases such as Access or SQL just to name a few, to create dynamic, feature rich websites. Web applications, specifically those relying on back end databases, are created using either Microsoft's ASP (Active Server Pages) language, or the open Source alternative language of PHP (Hypertext Preprocessor). Reasons why one might choose one over the other can cover the cost of development tools, or availability of such tools, or even ones comfort level with the Open Source concept.

Therefore the language with which the shopping cart will be developed depends upon what the user actually requires if the user is concerned with compatibility, a PHP style shopping cart should be a first choice or in other cases if  some e-commerce application development is the requirement then many would call ASP the best. At the same time you can’t go wrong with an ASP shopping cart. However, it will be rather precise to say both languages have their advantages specific to users. This does not mean that PHP cannot provide ecommerce solution only that many people choose ASP. In all, asp shopping cart and php shopping cart are both excellent options, the choice is yours to go for the language that is compatible to meet the ecommerce solutions provided by your website.