php使用递归创建多级目录

<?php
header('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");
?>

php使用递归创建多级目录