How can one display images one by one for a quiz on a PHP/HTML page without showing all images at once?

To display images one by one for a quiz on a PHP/HTML page without showing all images at once, you can use PHP to dynamically load each image as the user progresses through the quiz. You can achieve this by storing the image paths in an array and using PHP to iterate through the array and display one image at a time based on the user's progress.

```php
<?php
// Array of image paths
$images = array("image1.jpg", "image2.jpg", "image3.jpg");

// Check if a specific image is requested
if(isset($_GET['image']) && is_numeric($_GET['image']) && $_GET['image'] >= 0 && $_GET['image'] < count($images)) {
    $imageIndex = $_GET['image'];
    echo '<img src="' . $images[$imageIndex] . '" alt="Quiz Image">';
} else {
    // Display the first image by default
    echo '<img src="' . $images[0] . '" alt="Quiz Image">';
}
?>
```

In this code snippet, we have an array `$images` containing the paths to the quiz images. We check if a specific image is requested through the URL parameter `image`, and if so, we display that image using the index provided. If no specific image is requested, we default to displaying the first image in the array. This approach allows you to display images one by one for the quiz without showing all images at once.