When I was writing about using Thunder to download yesterday, I found that the ./a.jpg file converted to Thunder was not the network address, so I wrote a method to convert it. I am currently at the basic level of PHP, so I would like to ask for help if I have any deficiencies. It will automatically determine the current domain name and main domain name. The following is the form: ./a.jpg = http://about.w.com/a.jpg; ../a.jpg =http://www.w.com /a.jpg None/*
Yesterday, when I was writing about using Thunder to download, I found that the ./a.jpg file converted to Thunder was not the network address, so I wrote a method to convert it. I am currently at the basic level of PHP, so I would like to ask for help if I have any deficiencies./** * 相对路径转网络绝对路径 * @param string $file * @return string */ function dirToHttpUrl($file) { //判断文件是否存在 if (!file_exists($file)) { return false; } //域名 $nowUrl = dirname('http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF']); //当前域名 $tempUrl = explode('.', $_SERVER['HTTP_HOST']); $dirUrl = 'http://www.'.$tempUrl[1].'.'.$tempUrl[2].'/'; //主域名 //文件路径的层次统计 $tempFile = explode('../', $file); $tempNum = array_count_values($tempFile); if (array_key_exists('', $tempNum)) { $fileNum = $tempNum['']; $fileEnd = end($tempFile); } else { $fileNum = 0; $fileEnd = '/'.substr($tempFile[0], 2); } //域名层次统计 $tempWeb = explode('/', $nowUrl); $tempWeb = array_slice($tempWeb, 3); $webNum = count($tempWeb); //文件对应的域名 if ($fileNum > $webNum) { $nowUrl = $dirUrl; } //返回 return $nowUrl.$fileEnd; } //dirToHttpUrl('./1.jpg');