Using php 'rand' and or WordPress to create random "data-interval" string to be inserted in Bootstrap 4 Carousel values across a WordPress loop.

random-data-interval.php

<div id="post-<?php the_ID(); ?>" class="carousel slide" data-ride="carousel" data-interval="<?php echo rand(4500, 6000); ?>">
  <div class="carousel-inner" role="listbox">
    <div class="carousel-item active">
      <img class="d-block img-fluid" src="..." alt="First slide">
    </div>
    <div class="carousel-item">
      <img class="d-block img-fluid" src="..." alt="Second slide">
    </div>
    <div class="carousel-item">
      <img class="d-block img-fluid" src="..." alt="Third slide">
    </div>
 </div>

This is a specific use case. I am using Bootstrap 4 carousels and flex-box "cards" with image containers which display the carousel. Being that the data populating these cards comes from different sources AND more importantly, are part of "the loop", I wanted to randomize the speed at which the carousel slides "transitioned" -- like Windows 10 start menu. Using the above method works wonderfully as part of a loop and will assign a random numeric value to the "data-interval" attribute (between the interval values I specified above) for items within the same WordPress loop. 👍