How can PHP developers effectively implement rollover links using CSS and HTML elements?

To implement rollover links using CSS and HTML elements, PHP developers can utilize CSS pseudo-classes like :hover to change the styling of links when a user hovers over them. By defining different styles for the default and hover states, developers can create interactive and visually appealing rollover effects for links. ```html <style> a { color: blue; /* default link color */ text-decoration: none; /* remove underline */ } a:hover { color: red; /* change link color on hover */ text-decoration: underline; /* add underline on hover */ } </style> <a href="#">Hover over me</a> ```