wordpress上来必须修改的内容

//附件自动变md5名称
add_filter('wp_handle_upload_prefilter', 'custom_upload_filter' );
function custom_upload_filter( $file ){
    $info = pathinfo($file['name']);
    $ext = '.' . $info['extension'];
    $md5 = md5($file['name']);
    $file['name'] = $md5.$ext;
    return $file;
}
//禁用文章自动保存
add_action('wp_print_scripts','fanly_no_autosave');
function fanly_no_autosave(){
wp_deregister_script('autosave');
}
//禁用文章修订版本
add_filter( 'wp_revisions_to_keep', 'fanly_wp_revisions_to_keep', 10, 2 );
function fanly_wp_revisions_to_keep( $num, $post ) { return 0;}