Title: Amelioration Thumbnail
Last modified: February 18, 2022
---
# Amelioration Thumbnail
* [jmpicot](https://wordpress.org/support/users/jmpicot/)
* (@jmpicot)
* [4 years, 3 months ago](https://wordpress.org/support/topic/amelioration-thumbnail/)
* Hello,
* J’ai remarqué que si on force les thumbnails (force_thumbnail=yes), on ne peut
pas agir sur la taille (thumbnail_size=75,75).
* En effet, le code n’est pas prévu dans le fichier lcp-thumbnail.php (get_thumbnail()).
* Je propose donc l’évolution suivante qui permet de récupérer la miniature associée
au premier média du post :
* ```
/**
* Get the post Thumbnail
* @see http://codex.wordpress.org/Function_Reference/get_the_post_thumbnail
* @param unknown_type $single
*
*/
public function get_thumbnail($single, $thumbnail, $thumbnail_size, $force_thumbnail, $lcp_thumb_class = null){
$lcp_thumbnail = null;
if( $thumbnail == 'yes' ){
$lcp_thumbnail = '';
$image_sizes = array_unique(
array_merge(
get_intermediate_image_sizes(),
array("thumbnail", "medium", "large", "full")
)
);
if( in_array( $thumbnail_size, $image_sizes ) ){
$lcp_thumb_size = $thumbnail_size;
} elseif( $thumbnail_size ) {
$lcp_thumb_size = explode(",", $thumbnail_size);
} else {
$lcp_thumb_size = 'thumbnail';
}
if ( has_post_thumbnail($single->ID) ){
$lcp_thumbnail = '';
$lcp_thumbnail .= get_the_post_thumbnail(
$single->ID,
$lcp_thumb_size,
array(
'alt' => esc_attr($single->post_title),
// If we have a class use it, otherwise use default
'class' => ( $lcp_thumb_class != null ) ? $lcp_thumb_class : 'lcp_thumbnail'
)
);
$lcp_thumbnail .= '';
} else {
$content = get_the_content();
$thumb_id = $this->get_first_content_image_id($content);;
if ($thumb_id) {
echo $thumb_id;
$lcp_thumbnail = '';
$lcp_thumbnail .= wp_get_attachment_image(
$thumb_id,
$lcp_thumb_size,
array(
'alt' => esc_attr($single->post_title),
// If we have a class use it, otherwise use default
'class' => ( $lcp_thumb_class != null ) ? $lcp_thumb_class : 'lcp_thumbnail'
));
$lcp_thumbnail .= '';
} else {
// if thumbnail is requested but not found as featured image, grab first image in the content of the post
if ( ($force_thumbnail === 'yes'|| $force_thumbnail === 'true') && preg_match('~]*src\s?=\s?[\'"]([^\'"]*)~i',get_the_content(), $imgMatches)) {
$lcp_thumbnail = '';
$lcp_thumbnail .= ' . ')
post_title) . '" />';
}
}
}
} else {
# Check for a YouTube video thumbnail
$lcp_thumbnail = $this->check_youtube_thumbnail($single->content);
}
return $lcp_thumbnail;
}
private function get_first_content_image_id($content) {
// set variables
global $wpdb;
if (isset($content)) {
// look for images in HTML code
preg_match_all('/]+>/i', $content, $all_img_tags);
if ($all_img_tags) {
foreach ($all_img_tags[0] as $img_tag) {
// find class attribute and catch its value
preg_match( '/]*>/i', $img_tag, $img_class );
if ($img_class) {
// Look for the WP image id
preg_match( '/wp-image-([\d]+)/i', $img_class[1], $thumb_id );
// if first image id found: check whether is image
if ($thumb_id) {
$img_id = absint( $thumb_id[1] );
// if is image: return its id
if (wp_attachment_is_image($img_id)) {
return $img_id;
}
} // if(thumb_id)
} // if(img_class)
// else: try to catch image id by its url as stored in the database
// find src attribute and catch its value
preg_match( '/]*>/i', $img_tag, $img_src );
if ($img_src) {
// delete optional query string in img src
$url = preg_replace('/([^?]+).*/', '\1', $img_src[1]);
// delete image dimensions data in img file name, just take base name and extension
$url = preg_replace( '/(.+)-\d+x\d+\.(\w+)/', '\1.\2', $url );
// if path is protocol relative then set it absolute
if (0 === strpos($url, '//')) {
$url = $this->defaults[ 'site_protocol' ] . ':' . $url;
// if path is domain relative then set it absolute
} elseif (0 === strpos($url, '/')) {
$url = $this->defaults[ 'site_url' ] . $url;
}
// look up its id in the db
$thumb_id = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE guid = '%s'", $url ) );
// if id is available: return it
if ($thumb_id) {
return absint($thumb_id);
} // if(thumb_id)
} // if(img_src)
} // foreach(img_tag)
} // if(all_img_tags)
} // if (post content)
// if nothing found: return 0
return 0;
}
```
Viewing 3 replies - 1 through 3 (of 3 total)
* Thread Starter [jmpicot](https://wordpress.org/support/users/jmpicot/)
* (@jmpicot)
* [4 years, 3 months ago](https://wordpress.org/support/topic/amelioration-thumbnail/#post-15379792)
* Désolé, dans mon code ci-dessus il trine un petit echo (#debug) :
echo $thumb_id;
* A supprimer
* Plugin Contributor [zymeth25](https://wordpress.org/support/users/zymeth25/)
* (@zymeth25)
* [4 years, 3 months ago](https://wordpress.org/support/topic/amelioration-thumbnail/#post-15381623)
* Hello, thanks for sharing your code. If you would like us to review it for merging
into the plugin, please create a pull request on [our Github repository](https://github.com/picandocodigo/List-Category-Posts).
* Thanks!
* Thread Starter [jmpicot](https://wordpress.org/support/users/jmpicot/)
* (@jmpicot)
* [4 years, 3 months ago](https://wordpress.org/support/topic/amelioration-thumbnail/#post-15419720)
* Bonjour,
* Je viens de pousser ma pull request, j’espère qu’elle sera prise en compte.
* Merci
* JM
Viewing 3 replies - 1 through 3 (of 3 total)
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* 3 replies
* 2 participants
* Last reply from: [jmpicot](https://wordpress.org/support/users/jmpicot/)
* Last activity: [4 years, 3 months ago](https://wordpress.org/support/topic/amelioration-thumbnail/#post-15419720)
* Status: not a support question