WordPress圖片自動(dòng)添加Alt和title教程

wordpress 2024-03-20編輯：重慶網(wǎng)站建設(shè) WordPress 添加 教程

WordPress上傳圖片時(shí)圖片不會自動(dòng)添加ALT和TITLE，這樣非常不利于SEO優(yōu)化，手動(dòng)添加又非常免費(fèi)。微范兒分享一段WordPress圖片自動(dòng)添加Alt和title方法。

將下面的代碼添加到當(dāng)前主題函數(shù)模板functions.php中：

add_action( 'add_attachment', 'my_set_image_meta_upon_image_upload' );
function my_set_image_meta_upon_image_upload( $post_ID ) {
// Check if uploaded file is an image, else do nothing
if ( wp_attachment_is_image( $post_ID ) ) {
$my_image_title = get_post( $post_ID )->post_title;
// Sanitize the title:  remove hyphens, underscores & extra spaces:
$my_image_title = preg_replace( '%s*[-_s]+s*%', ' ',  $my_image_title );
// Sanitize the title:  capitalize first letter of every word (other letters lower case):
$my_image_title = ucwords( strtolower( $my_image_title ) );
// Create an array with the image meta (Title, Caption, Description) to be updated
// Note:  comment out the Excerpt/Caption or Content/Description lines if not needed
$my_image_meta = array(
'ID'=> $post_ID,// Specify the image (ID) to be updated
'post_title'=> $my_image_title,// Set image Title to sanitized title
'post_excerpt'=> $my_image_title,// Set image Caption (Excerpt) to sanitized title
'post_content'=> $my_image_title,// Set image Description (Content) to sanitized title
);
// Set the image Alt-Text
update_post_meta( $post_ID, '_wp_attachment_image_alt', $my_image_title );
// Set the image meta (e.g. Title, Excerpt, Content)
wp_update_post( $my_image_meta );
} 
}

代碼可以過濾掉圖片名稱中的空格等多余元素，對之前上傳的圖片無效。

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