What is the function of the "rand()" in generating random background images in PHP?

The "rand()" function in PHP is used to generate a random number within a specified range. In the context of generating random background images, "rand()" can be used to select a random image from a list of image filenames. By using "rand()" to select a random index from the array of image filenames, we can dynamically change the background image each time the page is loaded. 

$backgroundImages = array("image1.jpg", "image2.jpg", "image3.jpg", "image4.jpg");

$randomIndex = rand(0, count($backgroundImages) - 1);
$randomImage = $backgroundImages[$randomIndex];

echo '<style>
        body {
            background-image: url("' . $randomImage . '");
        }
      </style>';

Keywords

rand() random background images PHP function generating

Related Questions