How can PHP beginners ensure consistent image display across different browsers like Chrome, Firefox, and Opera?

PHP beginners can ensure consistent image display across different browsers by using CSS to style the images. By setting explicit width and height values for images, as well as using the "max-width: 100%;" property, images will scale proportionally across browsers. Additionally, using the "display: block;" property will help with consistent spacing and alignment.

<style>
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
</style>