Ok, here goes...

I was once asked to evaluate upgrade options for an online shop platform.

The thing was built on Zend 1, but that's not the problem.

The geniuses that worked on it before didn't have any clue about best practices, framework convention, modular thinking, testing, security issues...nothing!

There were some instances when querying was done using a rudimentary excuse for a model layer. Other times, they would just use raw queries and just ignore the previous method. Sometimes the database calls were made in strange function calls inside randomly loaded PHP files from different folders from all over the place. Sometimes they used JOINs to get the data from multiple tables, sometimes they would do a bunch of single table queries and just loop every data set to format it using multiple for loops.

And, best of all, there were some parts of the app that would just ignore any ideea of frameworks, conventions and all that and would be just a huge PHP file full of spagetti code just spalshed around, sometimes with no apparent logic to it. Queries, processing, HTML...everything crammed in one file...

The most amazing thing was that this code base somehow managed to function in production for more than 5 years and people actualy used it...

Imagine the reaction I got from the client the moment I said we should burn it to the ground and rebuild the whole thing from scratch...

Good thing my boss trusted me and backed me up (he is a great guy by the way) and we never had to go along with that Frankenstein monster...