WordPress上传图片自动添加Alt和图像描述
WordPress上传图片时手动给图片添加替代文本(Alt)和图像描述有些麻烦,可以通过本文的方法自动将图片名称设置为WordPress图像标题、说明和图像描述,如图:
将下面的代码添加到当前主题函数模板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 ); } }
代码可以过滤掉图片名称中的空格等多余元素,对之前上传的图片无效。
代码源自:https://brutalbusiness.com/automatically-set-the-wordpress-image-title-alt-text-other-meta