WordPress图片自动添加Alt和title教程
WordPress上传图片时图片不会自动添加ALT和TITLE，这样非常不利于SEO优化，手动添加又非常免费。微范儿分享一段WordPress图片自动添加Alt和title方法。将下面的代码添加到当前主题函数模板functions.php中：————————代码部分——————————————————————————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 nothingif ( 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-Textupdate_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 );} }————————代码部分——————————————————————————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。
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