How can PHP developers ensure that their code is W3C compliant when using features like <marquee> for displaying dynamic content?

When using features like <marquee> in PHP to display dynamic content, developers can ensure W3C compliance by avoiding deprecated HTML elements and attributes. Instead of using <marquee>, developers can achieve similar effects using CSS animations or JavaScript. This will help ensure that the code meets modern web standards and is compatible with all browsers. 

&lt;?php
// Instead of using &lt;marquee&gt; for dynamic content, use CSS animations or JavaScript
// Example: CSS animation for scrolling text
echo &#039;&lt;style&gt;
        .marquee {
            width: 100%;
            white-space: nowrap;
            overflow: hidden;
            animation: marquee 10s linear infinite;
        }
        @keyframes marquee {
            0% { transform: translateX(100%); }
            100% { transform: translateX(-100%); }
        }
    &lt;/style&gt;&#039;;
echo &#039;&lt;div class=&quot;marquee&quot;&gt;Dynamic content goes here&lt;/div&gt;&#039;;
?&gt;

Keywords

PHP W3C compliance <marquee> dynamic content validation

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