S.Wojnowski - web development

Helping make the web work for everyone.

Welcome to my website. My name is Sylwester Wojnowski. I am a full stack web developer who started programming for the internet in 1998. As a web developer I plan, design and implement intereactive internet technologies and applications for individuals and organisations.

Web Developer Zone

Web Developer Zone is a code first section devoted to tools and techniques used in web development. Thematically, the main focus here is on PHP, Linux, BASH, JavaScript and a little bit of MySQL and Python.

Pick of the week

Dissecting e-mail spamming hack based on PHP CGI

Dissecting e-mail spamming hack based on PHP CGI

24 Jul 2020 18:27:44


Article about how vulnerable PHP CGI setups can become a source of e-mail spam.


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Recent

Two indispensable formulas for percentages

15 Jul 2020 11:21:05

Two indispensable formulas for percentages

In this article I look at two very useful mathematical formulas related to dealing with percentages efficiently. You might know them, but it is likely, you haven't not been shown at least one of them while studying the subject during your school years. I remember my own ...

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Recursively updating deeply nested arrays in PHP

14 Jul 2020 11:08:06

Recursively updating deeply nested arrays in PHP

Suppose you have a deeply nested array of items, with its members being numbers and arrays. You want to update all the numbers, like 3 and 5 for example, in all of the arrays, no matter how deep nested the numbers are in the structure. In this article I look at two methods of ...

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Finding Minimum Spanning Tree with Prim's Algorithm and PHP

02 Mar 2020 02:10:42

Finding Minimum Spanning Tree with Prim's Algorithm and PHP

Minimum spanning tree (MST) is an edge subset of edge-weighed undirected graph, that connect all the vertices together with the minimum possible total edge weight. There are a few methods of finding minimum spanning tree of a graph. One such efficient method is called ...

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Geocoding with HERE APIs and Vue.js

27 Feb 2020 20:06:39

Geocoding with HERE APIs and Vue.js

Geocoding with HERE API and Vue.js Geocoding is a process of finding a geographic location of an object on the Earth's surface. The location is specified using two coordinates. One is latitude, the other longitude. Both are specified in degrees. Latitude's range is 90 ...

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SWWW

S.Wojnowski - web developer

SWWW is my place on the web where I write on stuff related to web development. Main focus here is on my own programs and scripts, but also websites I have developed over years or helped develop, improve or maintain. In the Web Developer Zone I take a closer look at various solutions related to web development and computer programming.

If you find any of my projects interesting, useful or would like to know more on it, do let me know. This website has a contact form. Altenatively, you can leave a comment under an article on the blog.

Need a web developer?

S.Wojnowski - Hire a web developer

If you need a web developer for web development work drop me a line!

I am based in Wakefield, UK, but always happy to consider remote work opportunities.

Contact Me