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
24 Jul 2020 18:27:44
Article about how vulnerable PHP CGI setups can become a source of e-mail spam.
Popular
03 Aug 2020 00:39:31
Piping JSON object to PHP script
Article about how to pass data from a shell to a PHP script with a pipe on the command line or directly using PHP system function.
18 Jul 2020 00:39:07
Transforming range of variable to 0 to 1 and custom ranges
Learn how to transform variable's range to [0,1] or a custom range.
29 Jul 2023 17:05:58
Fixing No input file specified error in CodeIgniter 4
Get rid of No input file specified error in CodeIgniter 4.
20 May 2021 17:49:23
Mapping associative array keys to variables with $$ in PHP
A neat trick to reduce amount of code needed to access data stored in PHP associative array.
27 Jan 2022 12:25:32
Creating URL-safe slugs in CodeIgniter 4
Build URL-secure slugs using URL and Text helper functions in CodeIgniter4
07 Apr 2022 00:55:48
MongoDB mongod server fails to start after installation and solution
MongoDB server not starting after installation due to missing dependencies and how to solve this problem.
Recent
14 Feb 2020 21:45:36
Number of unique paths in square lattice
Suppose that you have a square (N x N) grid and want to determine number of unique paths, which will take you from the top left corner in the grid to the bottom right one of if. You are allowed to move by one point at at time, and to the right or to the bottom only. For example, ...
14 Feb 2020 01:51:58
Week day number falling on a month day
Suppose, that you were born on Monday, January 1, and want to know how many Mondays happened to fall on the same day of any month of the year over, lets say, the last 100 years. It is a silly problem, but also one which points to some problems and inaccuracies ensuing from ...
12 Feb 2020 19:53:09
Walking pyramid graph paths in PHP
This article is a follow-up to my text about turning a pyramid like structure into a graph (which looks a lot like a tree, but isn't one), finding all the paths in the graph and collecting all the values held by vertices in each path of it. In the first article I stopped at ...
08 Feb 2020 23:30:22
Longest Collatz sequence in PHP
This article is a result of a fairly well known computer programming problem I came across online some time ago. Essence of the problem was about finding the longest Collatz sequence, that is the largest number of terms for a number less than N, with N being 1 000 000. For ...
SWWW
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.
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I am based in Wakefield, UK, but always happy to consider remote work opportunities.