相对路径转绝对路径/**<br>
* 相对路径转网络绝对路径<br>
* @param string $file<br>
* @return string<br>
*/<br>
function dirToHttpUrl($file) {<br>
<br>
//判断文件是否存在<br>
if (!file_exists($file)) {<br>
return false;<br>
}<br>
<br>
//域名<br>
$nowUrl = dirname('http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF']); //当前域名<br>
$tempUrl = explode('.', $_SERVER['HTTP_HOST']);<br>
$dirUrl = 'http://www.'.$tempUrl[1].'.'.$tempUrl[2].'/'; //主域名<br>
<br>
//文件路径的层次统计<br>
$tempFile = explode('../', $file);<br>
$tempNum = array_count_values($tempFile);<br>
<br>
if (array_key_exists('', $tempNum)) {<br>
$fileNum = $tempNum[''];<br>
$fileEnd = end($tempFile);<br>
} else {<br>
$fileNum = 0;<br>
$fileEnd = '/'.substr($tempFile[0], 2);<br>
}<br>
<br>
//域名层次统计<br>
$tempWeb = explode('/', $nowUrl);<br>
$tempWeb = array_slice($tempWeb, 3);<br>
$webNum = count($tempWeb);<br>
<br>
//文件对应的域名<br>
if ($fileNum > $webNum) {<br>
$nowUrl = $dirUrl;<br>
}<br>
<br>
//返回<br>
return $nowUrl.$fileEnd;<br>
<br>
}<br>
<br>
//dirToHttpUrl('./1.jpg');
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