How does the autoplay feature in the YouTube embed link affect the video playback on the website, and what potential issues can arise from using autoplay?

Autoplaying videos in embedded YouTube links can lead to a poor user experience, as it can be disruptive and annoying for visitors. To prevent autoplay, you can add the "autoplay=0" parameter to the YouTube embed link.

$youtube_embed_url = 'https://www.youtube.com/embed/VIDEO_ID?autoplay=0';
echo '<iframe width="560" height="315" src="' . $youtube_embed_url . '" frameborder="0" allowfullscreen></iframe>';