php使用递归创建多级目录

<?phpheader('Content-type:text/html;charset=utf8');echo "Loading time:".date('Y-m-d H:i:s');sleep(5);echo "<br>";echo "End time:".date('Y-m-d H:i:s');// 多级目录新建function createFolder($path){    if(!file_exists($path)){        createFolder(dirname($path));        mkdir($path, 0777);    }}createFolder("/Library/WebServer/Documents/aa/bb/cc");?>