图片网址无效，添加了网站网址(Image URL not working, has site URL added)

 我有一个PHP脚本从目录中获取最新的图像。 该脚本似乎工作并返回以下内容： 
 
<img src="webcam3/FI9804W_00626E4E4229/snap/Schedule_20140923-105158.jpg" alt="Webbkamera 3">
 
 base_url看起来像这样： 
 
$base_url = 'webcam3/FI9804W_00626E4E4229/snap';
 
 但是，链接附加了站点URL，因此链接读取 
 
http://www.hlmfk.se/webbkameror/kameratest/webcam3/FI9804W_00626E4E4229/snap/Schedule_20140923-105158.jpg
 
 ...当地址应该是www.hlmfk.se/webcam3 / ...如何防止将网站URL添加到图像链接？ 谢谢！ 
 
 脚本看起来像这样，并在主题functions.php中编写： 
 
$dir = 'snap';
$base_url = 'webcam3/FI9804W_00626E4E4229/snap';
$newest_mtime = 0;
$show_file = 'BROKEN';
if ($handle = opendir($base_url)) {
while (false !== ($file = readdir($handle))) {
    if (($file != '.') && ($file != '..') && ($file != '.htaccess')) {
       $mtime = filemtime("$base_url/$file");
       if ($mtime > $newest_mtime) {
          $newest_mtime = $mtime;
          $show_file = "$base_url/$file";
       }
    }
  }
}

I have a PHP script that fetches the latest image from a directory. The script seems to work and returns the following:
 
<img src="webcam3/FI9804W_00626E4E4229/snap/Schedule_20140923-105158.jpg" alt="Webbkamera 3">
 
The base_url looks like this:
 
$base_url = 'webcam3/FI9804W_00626E4E4229/snap';
 
However the link has the site URL appended to it, so the link reads
 
http://www.hlmfk.se/webbkameror/kameratest/webcam3/FI9804W_00626E4E4229/snap/Schedule_20140923-105158.jpg
 
...when the address should be www.hlmfk.se/webcam3/... How do I prevent the site URL being added to the image link? Thanks!
 
The script looks like this and is written in the theme functions.php:
 
$dir = 'snap';
$base_url = 'webcam3/FI9804W_00626E4E4229/snap';
$newest_mtime = 0;
$show_file = 'BROKEN';
if ($handle = opendir($base_url)) {
while (false !== ($file = readdir($handle))) {
    if (($file != '.') && ($file != '..') && ($file != '.htaccess')) {
       $mtime = filemtime("$base_url/$file");
       if ($mtime > $newest_mtime) {
          $newest_mtime = $mtime;
          $show_file = "$base_url/$file";
       }
    }
  }
}

原文：https://stackoverflow.com/questions/25991211