add_action( 'content_save_pre', 'add_image_dimensions' );
function add_image_dimensions( $content ) {
preg_match_all( '/<img[^>]+>/i', $content, $images);
if (count($images) < 1)
return $content;
foreach ($images[0] as $image) {
preg_match_all( '/(alt|title|src|width|class|id|height)=("[^"]*")/i', $image, $img );
if ( !in_array( 'src', $img[1] ) )
continue;
if ( !in_array( 'width', $img[1] ) || !in_array( 'height', $img[1] ) ) {
$src = $img[2][ array_search('src', $img[1]) ];
$alt = in_array( 'alt', $img[1] ) ? ' alt=' . $img[2][ array_search('alt', $img[1]) ] : '';
$title = in_array( 'title', $img[1] ) ? ' title=' . $img[2][ array_search('title', $img[1]) ] : '';
$class = in_array( 'class', $img[1] ) ? ' class=' . $img[2][ array_search('class', $img[1]) ] : '';
$id = in_array( 'id', $img[1] ) ? ' id=' . $img[2][ array_search('id', $img[1]) ] : '';
list( $width, $height, $type, $attr ) = getimagesize( str_replace( "\"", "" , $src ) );
$html = '';
if (($width != 0) || ($height != 0)) {
$html = ' width="%d" height="%d" ';
}
$image_tag = sprintf( '<img loading="lazy" src=%s%s%s%s%s' . $html . '/>', $src, $alt, $title, $class, $id, $width, $height );
$content = str_replace($image, $image_tag, $content);
}
}
return $content;
}
This code should add width and height to pictures when saving post, but it doesn't. Why?
Help me please.
Sorry for my English.
$content
but then you don't return it, filters always return something. If you don't return something, then it's the same asreturn '';
content_save_pre
? I checked the official WP docs and could not find that filter, and Adam Browns hooks database suggests it's not used in post saving. WP image blocks should also be adding widths and heights as well assrcset
attributes by default