WordPress上传文件默认是不改变文件名称的，可对中文文件名而言，某些系统、某些浏览器访问是会出现问题滴，那么怎样让Wordpress上传文件自动重命名呐？
以wordpress 3.9.0为例，打开“wp-admin/includes/file.php”文件，找到第313行和452行这段代码：
// Move the file to the uploads dir
new_file =uploads['path'] . "/filename"; //主要是修改这行的代码！
if ( false === @ rename(file['tmp_name'], new_file ) ) {
if ( 0 === strpos(uploads['basedir'], ABSPATH ) )
error_path = str_replace( ABSPATH, '',uploads['basedir'] ) . uploads['subdir'];
elseerror_path = basename( uploads['basedir'] ) .uploads['subdir'];
return upload_error_handler(file, sprintf( __('The uploaded file could not be moved to %s.' ), $error_path ) );
}
PHP
将其修改为
// Move the file to the uploads dir
new_file =uploads['path'] . "/".date("YmdHis").floor(microtime()*1000).".".ext; //主要是修改这行的代码！
if ( false === @ rename(file['tmp_name'], new_file ) ) {
if ( 0 === strpos(uploads['basedir'], ABSPATH ) )
error_path = str_replace( ABSPATH, '',uploads['basedir'] ) . uploads['subdir'];
elseerror_path = basename( uploads['basedir'] ) .uploads['subdir'];
return upload_error_handler(file, sprintf( __('The uploaded file could not be moved to %s.' ), $error_path ) );
}
PHP
保存，重新上传文件。这样，新上传的文件，就会自动保存为“年月日时分秒+千位毫秒整数”的新文件名，并保存到相应的年月文件夹之下了。
上传后保存的年-月文件夹修改方法：
后台设置—多媒体设置如下图：
以wordpress 3.9.2为例，打开“wp-includes/functions.php”文件，找到第1707行到1714行这段代码：
$subdir = '';
if ( get_option( 'uploads_use_yearmonth_folders' ) ) {
// Generate the yearly and monthly dirs
if ( !$time )
$time = current_time( 'mysql' );
$y = substr( $time, 0, 4 );
$m = substr( $time, 5, 2 );
$subdir = "/$y/$m"; //修改这行代码 By：yunzhujiboshi.com
}
PHP
修改上面代码中的：
$subdir = "/$y/$m";
PHP
修改为：
$subdir = "/$y$m";
PHP
也就是删除$y和$m之间的 /
最终修改后的代码
subdir = '';
if ( get_option( 'uploads_use_yearmonth_folders' ) ) {
// Generate the yearly and monthly dirs
if ( !time )
time = current_time( 'mysql' );y = substr( time, 0, 4 );m = substr( time, 5, 2 );subdir = "/ym"; //修改这行代码 By：yunzhujiboshi.com
}
