How to make several page layout options depending on the value of a variable?

Question

PHP

Good afternoon!
There is a task to make several options for page layout, depending on the value of the variable.

Let's say there is a row (.row) that has three blocks (width=33%) and each has an image. It is necessary that the number of blocks in a line can be changed by simply replacing the value of a variable. Below I will describe the logic:

Variable other_photo = 3

If other_photo = 4, then display 4 blocks in the line (width=25%)
otherwise, if other_photo = 3, then display three blocks (width=33%), and do not show the fourth block
otherwise, if other_photo = 2, then display two blocks (width=50%) - hide the rest
otherwise, if other_photo = 1, then display one block (width=100%) - hide the rest

This should be written in PHP. I understand the logic, but I don't know the syntax. Please help!

Thank you!

Answer 1

There is already an entry with that id.
You need not insert but update.

Answer 2

you yourself wrote everything.
We get the value of the variable, as I understand it from the theme settings.
and in the markup we check its value and display the markup that we need

<?php if($other_photo == 4) : ?>
  разметка
<?php elseif($other_photo == 3) : ?>
  другая разметка
<?php elseif($other_photo == 2) : ?>
  третья разметка
<?php else : ?>
  минимальная разметка
<?php endif; ?>

etc.
, you can use switch