What potential browser compatibility issues should be considered when using the marquee tag in PHP?

When using the marquee tag in PHP, one potential browser compatibility issue to consider is that the marquee tag is not supported in HTML5. To solve this issue, you can use CSS animations or JavaScript to create a similar scrolling effect that is compatible with modern browsers.

<!DOCTYPE html>
<html>
<head>
<style>
    .marquee {
        width: 100%;
        white-space: nowrap;
        overflow: hidden;
        animation: marquee 5s linear infinite;
    }

    @keyframes marquee {
        0% { transform: translateX(100%); }
        100% { transform: translateX(-100%); }
    }
</style>
</head>
<body>
<div class="marquee">
    <p>This is a scrolling text using CSS animations</p>
</div>
</body>
</html>