Ivan Dimov

Ivan is a student of IT, a freelance web designer/developer and a tech writer. He deals with both front-end and back-end stuff. Whenever he is not in front of an Internet-enabled device he is probably reading a book or traveling. You can find more about him at: http://www.dimoff.biz. facebook, twitter

Author's Posts

Working with APIs in PHP API

Working with APIs in PHP

July 31st, 2025172128 Let us say that we want to use the OpenWeatherMap API to display the weather in an arbitrary city. We could achieve this in the following way
JavaScript tips and tricks JavaScript

JavaScript tips and tricks

July 31st, 202541123 Use objects/classes to encapsulate your application logic and try not to pollute the global variable scope as this can cause frustrating problems such as libraries not working from variables being overridden. Below is an example how you can structure your application’s logic in a simple way without polluting the global scope.
Cool HTM5 Features, Part 2 HTML 5

Cool HTM5 Features, Part 2

July 31st, 2025151142 The tel input type stands for telephone while the others should be self-evident. It is good to start using them where appropriate as there are subtle differences in the browsers when you use them. For example, on a mobile phone the tel input type might show the numbers first in the user’s browser and the date and time input types would...
Cool HTML5 features HTML 5

Cool HTML5 features

July 30th, 202581542 You can be more specific, for example, by stipulating image/png instead of the wildcard image/* which accepts all kinds of images. When you add the accept attribute and the user is shown the file dialog, he would be able to select only files from that particular type with some browser magic.
Sanitizing input with PHP and JavaScript JavaScript

Sanitizing input with PHP and JavaScript

July 30th, 2025151924 In PHP, there are a variety of ways in which you can sanitize the user input, depending on your needs. The htmlspecialchars function allows you to transform every special character in HTML into text so that the user cannot enter code in his input. It is good to use the function when you want to show a user input, stored or coming from...
Examining variable types in PHP PHP

Examining variable types in PHP

July 30th, 20256823 In PHP, there are a range of built-in functions which you can call to check variable types. They return a Boolean value - true if the variable is of that type and false if it is not.
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