Learn by doing, not knowing.
Laminas MVC has an event driven architecture. This means that the flow of the application depends on triggered events in Laminas during HTTP request. The event triggering may carry additional information and usually passed to a specific event listeners. Having an event driven architecture allows the Laminas application to be loosely coupled and thus very extensible.
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After several courses I took on Coursera, I have got a chance to apply machine learning on a real project – computer digit classification in PHP web applicaton. Lots of blog posts show you how to develop model that reads prepared data, displays model accuracy and loss, than describe some hyperparameters tuning and the results. I was (quite deep) digging for informations how to implement whole proces in real application. From data preparation and trained model implementation. So this post has this primary goal – describe the whole process.
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Archiving price changes is probably common function often implemented in web applications. I would like to share solution that satisfied requirements in application we developed.
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Delegators (delegation pattern) in Zend Framework are very useful in situations when you need to add some configuration or dependency during instantiation of service class (service manager knows about that class). You will achive it with a delegator factory. The factory wraps your service and provides additional "decoration".
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This is just an example of how to include aggregate function call when building SQL queries via Zend\Db\Sql.
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I have migrate couple of projects from ZF2 to ZF3 so I decided to summarize steps I went through during Zend Framework migration.
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Configuring routes using arrays is a common practice in Zend Framework documentation examples. However when the number of routes is increasing I get often lost in arrays and whole route config part starts to be confusing to me.
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In one project I needed CRON script to read specific subscribers and copy them in another list.
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In the second part I will demonstrate how to find and select required data from the tree and full tree structure.
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Every developer will sooner or later solve a situation how to store hierarchical data (parent – child relation) in relational database. As there is a lot of information and code snippets for representing trees and hierarchies in SQL, I will demonstrate practical examples and source codes you can use and save time on your project.
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