(PHP 5 >= 5.2.4)
stream_is_local — Checks if a stream is a local stream
Checks if a stream, or a URL, is a local one or not.
The stream resource or URL to check.
成功时返回 TRUE， 或者在失败时返回 FALSE.
Example #1 stream_is_local() example
Basic usage example.
以上例程的输出类似于：
<?php
var_dump(stream_is_local("http://example.com"));
var_dump(stream_is_local("/etc"));
?>
bool(false)
bool(true)