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For some reason however I expected it to behave like `mkdir -p` on the command line which succeeds if the directory already exists.
<?php /** * Makes directory and returns BOOL(TRUE) if exists OR made. * * @param  $path Path name * @return bool */ function rmkdir($path, $mode = 0755) {     $path = rtrim(preg_replace(array("/\\\\/", "/\/{2,}/"), "/", $path), "/");     $e = explode("/", ltrim($path, "/"));     if(substr($path, 0, 1) == "/") {         $e[0] = "/".$e[0];     }     $c = count($e);     $cp = $e[0];     for($i = 1; $i < $c; $i++) {         if(!is_dir($cp) && !@mkdir($cp, $mode)) {             return false;         }         $cp .= "/".$e[$i];     }     return @mkdir($path, $mode); } ?>

Somehow the recursive version of mkdir didn't work for me on Mac and the workaraounds listed below alsow didn't work for me, so heres my solution: <?php function mkdir_r($dirName, $rights=0777){     $dirs = explode('/', $dirName);     $dir='';     foreach ($dirs as $part) {         $dir.=$part.'/';         if (!is_dir($dir) && strlen($dir)>0)             mkdir($dir, $rights);     } } ?> Tested and works ;)

上面来自PHP手册老外的回复：
http://cache.baiducontent.com/c?m=9f65cb4a8c8507ed4fece763105392230e54f7216695c7150888c40e8e3b081d0035bda66f780d5094992d215af2154bea87692b615860a09bbfca109fafd7756fde28762a5e9141638c40f9900632c151875a9fb81897f8&p=882a9543d2b112a05afcc665540883&newp=8b2a9712a49111a058eb9029164ccb231610db2151d1d11128a6c1&user=baidu&fm=sc&query=PHP+mkdir+-P&qid=&p1=1

下面来自网友没实践：
http://hi.baidu.com/hevensun/item/d28a0c08c68d98e0ff240d85

function mkdirs($dir)     {         if(!is_dir($dir))         {             if(!mkdirs(dirname($dir))){                 return false;             }             if(!mkdir($dir,0777)){                 return false;             }         }         return true;     }     function rmdirs($dir)     {         $d = dir($dir);         while (false !== ($child = $d->read())){             if($child != '.' && $child != '..'){                 if(is_dir($dir.'/'.$child))                 rmdirs($dir.'/'.$child);                 else unlink($dir.'/'.$child);             }         }         $d->close();         rmdir($dir);     }

作者：jackxiang@向东博客 专注WEB应用 构架之美 --- 构架之美，在于尽态极妍 | 应用之美，在于药到病除
地址：http://jackxiang.com/post/6831/
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