[英]Get featured image with custom size outside wordpress
我有WordPress博客,該博客托管為Web應用程序的子目錄。 WordPress安裝保持不變,並且在主題級別進行了修改。 Web應用程序主頁需要顯示最近的博客文章。 因此,我有以下代碼用於顯示最近的帖子:
$array = array();
$query = "SELECT * FROM wp_posts WHERE post_status=:publish AND post_type=:post_type";
$stmt = $this->dbj->prepare($query);
$stmt->execute(array(
':publish' => 'publish',
':post_type' => 'post'
));
if ($stmt->rowCount() > 0) {
while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
$id = $row["ID"];
if ($row["post_name"] == '') {
$slug = $row["ID"];
} else {
$slug = $row["post_name"];
}
$content1 = strip_tags($row["post_content"]);
$image_prepare = $this->dbj->prepare('SELECT
wp_postmeta.meta_id,
wp_postmeta.post_id,
wp_postmeta.meta_key,
wp_postmeta.meta_value
FROM
wp_postmeta
INNER JOIN wp_posts ON wp_posts.ID = wp_postmeta.post_id
WHERE
wp_postmeta.meta_key = :meta_key
AND wp_posts.post_parent = :pid');
$image_prepare->execute(
array(
':pid' => $id,
':meta_key' => '_wp_attached_file'
)
);
$image_fetch = $image_prepare->fetchAll();
foreach ($image_fetch as $image_row) {
$image_name = $row['post_title'];
$image_path = $image_row['meta_value'];
}
if (strlen($content1) > 200) {
$content = substr($content1, 0, 200) . '...';
} else {
$content = nl2br($content1);
}
$array[] = array(
'image_path' => $image_path,
'image_name' => $image_name,
'slug' => $row["post_name"],
'content' => $content,
'title' => $row['post_title']
);
}
return $array;
}
我正在獲取完整尺寸的圖片網址。 我已經在主題中的functions.php
文件中完成了大小調整:
add_theme_support('post-thumbnails');
add_image_size('home-size', 214, 300);
add_image_size('home-featured', 300, 300);
add_image_size('jobs-thumb', 50, 75);
問題是上載目錄中調整大小的圖像並不總是具有home-featured
image-name-300x300.jpg
。 取而代之的是,它具有隨機的高度值,具體取決於文件名中圖像的比例(例如: image-name-300x220.jpg
)。 我又重新生成了縮略圖,但文件名仍然相同。 如何獲得上述解決方案的'home-featured'
?
Wordpress使用_wp_attachment_metadata
作為meta_key將生成的圖像的序列化數據保留在postmeta
表中。
就您而言,如果您的代碼不需要完整尺寸的圖像,請將_wp_attached_file
更改為_wp_attachment_metadata
。
$image_prepare->execute(
array(
':pid' => $id,
':meta_key' => '_wp_attached_file'
)
);
$image_fetch = $image_prepare->fetchAll();
foreach ($image_fetch as $image_row) {
$image_name = $row['post_title'];
$image_meta = unserialize($image_row['meta_value']);
$image_path = $image_meta['sizes']['home-featured']['file'];
}
$image_meta
將類似於:
array (
'width' => 720,
'height' => 960,
'file' => '2017/03/image.jpg',
'sizes' =>
array (
'thumbnail' =>
array (
'file' => 'image-150x150.jpg',
'width' => 150,
'height' => 150,
'mime-type' => 'image/jpeg',
),
'medium' =>
array (
'file' => 'image-225x300.jpg',
'width' => 225,
'height' => 300,
'mime-type' => 'image/jpeg',
),
'twentyseventeen-thumbnail-avatar' =>
array (
'file' => 'image-100x100.jpg',
'width' => 100,
'height' => 100,
'mime-type' => 'image/jpeg',
),
),
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