你可以试试image_editor_save_pre 过滤器:
add_filter( \'image_editor_save_pre\', \'custom_image_editor_save_pre\', 10 , 2 );
function custom_image_editor_save_pre( $image, $post_id){
    // your stuff here
    return $image;
}
 裁剪/旋转图像并按下保存按钮时,似乎会调用此过滤器(这是一个预过滤器)
这个$image 是类型的对象WP_Image_Editor_GD 下面是一个示例,说明它在过滤器中的外观:
WP_Image_Editor_GD Object
(
    [image:protected] => Resource id #172
    [file:protected] => /absolute/path/to/wordpress/install/wp-content/uploads/2013/07/car.jpg
    [size:protected] => Array
        (
            [width] => 220
            [height] => 330
        )
    [mime_type:protected] => image/jpeg
    [default_mime_type:protected] => image/jpeg
    [quality:protected] => 90
)
 以及
$post_id 是附件id。
也许还有其他更好的钩子可以找,但我在
/wp-admin/includes/image-edit.php
 在此功能中:
/**
 * Saves Image to File
 *
 * @param string $filename
 * @param WP_Image_Editor $image
 * @param string $mime_type
 * @param int $post_id
 * @return boolean
 */
function wp_save_image_file( $filename, $image, $mime_type, $post_id ) {
        if ( $image instanceof WP_Image_Editor ) {
                $image = apply_filters(\'image_editor_save_pre\', $image, $post_id);
                $saved = apply_filters(\'wp_save_image_editor_file\', null, $filename, $image, $mime_type, $post_id);