I have a piece of php code:
....
for ($i=0; $i < count($files); $i++) { $rows = array_chunk($files, 5); }
....
Where I want to have the chunk length ???5??? as dynamic (to display items different way in different view port width), accordingly to the visitor??�s browser??�s view port width. Exmpl:
if view port >= 800px ??� the chunk length = 5
if view port >= 680px ??� the chunk length = 4
etc??�
I know that I need to get the view port size (width) via Javascript and I know how to dial with that part, but all the problem is to pass that value to a php variable to implement it in that piece of code.
So I need to use GET or POST method, I tried several ways, but I can??�t make it work really. Maybe I need to create a page loading at first, to do this calculation and redirecting then user to the main page with that value in a PHP variable or something like this?.
These kind of things should be done always with CSS and Javascript. PHP has no connection to these components. PHP is "static" while your viewport (width and height) are dynamically.
If you insist on doing it anyway then the following solution:
The parameters you send to your PHP script can then be used.
But now again why you should not do it:
Problem A: I call your website, your PHP has received all possible data, has built me a layout, now I change the size, your PHP script has not noticed anything, and I have problems with the operation of your page.
Problem B: The values can open an unwanted security vulnerability, so I could pass e.g. as width or height or other information in the worst case a script via these parameters to infiltrate your server, ie you must ALWAYS validate these values.
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PHP (from the English Hypertext Preprocessor - hypertext preprocessor) is a scripting programming language for developing web applications. Supported by most hosting providers, it is one of the most popular tools for creating dynamic websites.
The PHP scripting language has gained wide popularity due to its processing speed, simplicity, cross-platform, functionality and distribution of source codes under its own license.
https://www.php.net/
JavaScript is a multi-paradigm language that supports event-driven, functional, and mandatory (including object-oriented and prototype-based) programming types. Originally JavaScript was only used on the client side. JavaScript is now still used as a server-side programming language. To summarize, we can say that JavaScript is the language of the Internet.
https://www.javascript.com/
CSS (Cascading Style Sheets) is a formal language for describing the appearance of a document written using a markup language.
It is mainly used as a means of describing, decorating the appearance of web pages written using HTML and XHTML markup languages, but can also be applied to any XML documents, such as SVG or XUL.
https://www.w3.org/TR/CSS/#css
HTML (English "hyper text markup language" - hypertext markup language) is a special markup language that is used to create sites on the Internet.
Browsers understand html perfectly and can interpret it in an understandable way. In general, any page on the site is html-code, which the browser translates into a user-friendly form. By the way, the code of any page is available to everyone.
https://www.w3.org/html/
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