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Responsive YouTube Embeds in Wordpress
<?php
add_filter('the_content', function($content) {
return str_replace(array("<iframe", "</iframe>"), array('<div class="iframe-container"><iframe', "</iframe></div>"), $content);
});
add_filter('embed_oembed_html', function ($html, $url, $attr, $post_id) {
if(strpos($html, 'youtube.com') !== false || strpos($html, 'youtu.be') !== false){
return '<div class="embed-responsive embed-responsive-16by9">' . $html . '</div>';
} else {
return $html;
}
}, 10, 4);
add_filter('embed_oembed_html', function($code) {
return str_replace('<iframe', '<iframe class="embed-responsive-item" ', $code);
});
.embed-responsive {
position: relative;
display: block;
height: 0;
padding: 0;
overflow: hidden;
}
.embed-responsive .embed-responsive-item,
.embed-responsive iframe {
position: absolute;
top: 0;
bottom: 0;
left: 0;
width: 100%;
height: 100%;
border: 0;
}
.embed-responsive-16by9 {
padding-bottom: 56.25%;
}
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