WordPress Version: 6.5
/**
* Adds `width` and `height` attributes to an `img` HTML tag.
*
* @since 5.5.0
*
* @param string $image The HTML `img` tag where the attribute should be added.
* @param string $context Additional context to pass to the filters.
* @param int $attachment_id Image attachment ID.
* @return string Converted 'img' element with 'width' and 'height' attributes added.
*/
function wp_img_tag_add_width_and_height_attr($image, $context, $attachment_id)
{
$image_src = preg_match('/src="([^"]+)"/', $image, $match_src) ? $match_src[1] : '';
list($image_src) = explode('?', $image_src);
// Return early if we couldn't get the image source.
if (!$image_src) {
return $image;
}
/**
* Filters whether to add the missing `width` and `height` HTML attributes to the img tag. Default `true`.
*
* Returning anything else than `true` will not add the attributes.
*
* @since 5.5.0
*
* @param bool $value The filtered value, defaults to `true`.
* @param string $image The HTML `img` tag where the attribute should be added.
* @param string $context Additional context about how the function was called or where the img tag is.
* @param int $attachment_id The image attachment ID.
*/
$add = apply_filters('wp_img_tag_add_width_and_height_attr', true, $image, $context, $attachment_id);
if (true === $add) {
$image_meta = wp_get_attachment_metadata($attachment_id);
$size_array = wp_image_src_get_dimensions($image_src, $image_meta, $attachment_id);
if ($size_array) {
// If the width is enforced through style (e.g. in an inline image), calculate the dimension attributes.
$style_width = preg_match('/style="width:\s*(\d+)px;"/', $image, $match_width) ? (int) $match_width[1] : 0;
if ($style_width) {
$size_array[1] = (int) round($size_array[1] * $style_width / $size_array[0]);
$size_array[0] = $style_width;
}
$hw = trim(image_hwstring($size_array[0], $size_array[1]));
return str_replace('<img', "<img {$hw}", $image);
}
}
return $image;
}