| Summary: | The aim of this work has been to suggest e-commerce implementations to a partially complete web shop using the script language PHP: Hypertext Preprocessor and the related framework Symfony. The motivation behind the work has been the rapidly changing requirements which web sites have seen during the past few years as a result of the introduction of smart phones and tablets. This in turn led to the company behind the web shop Persiennbutiken needing a new web site. In addition to taking the latest web design trends into consideration, the work is also studying behavioural economics in order to provide a solution which not only work, but also helps increasing profit with the help of clever technology. The importance of relevant statistics when developing new features is also highlighted and how to gather that statistics in a non-intrusive way. Each suggested implementation is measured against quite a few performance measures emphasising functionality, performance and security. All very important aspects when building a web shop as is seen in this report. The results indicate that the suggested implementations are able to fulfil the set requirements to a varying degree with different estimated development time. This leads to a recommended final solution which tries to balance development time versus features, relying on existing libraries where possible. Finally, the report also suggests a new way of dealing with database cache invalidation when using Symfony in conjunction with the object-relational mapping tool Doctrine.
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