如何在PHP的父文件夹中检查文件夹或目录？

I am using XMPP server in windows 7 for executing PHP script. I have project folder in htdocs which contain my projects PHP script with required bootstrap, CSS and jquery files. I have three subfolders in the project folder as student, teacher, and admin. I have one folder as the report in admin. I am working in student folder, How to create report directory in admin folder if report folder does not exist?

I want to create folder or Director in parent folder's not in the same folder.

If you want to get the parent directory you can use the function dirname. In your example it would look as follows:

$rebuilt_dir = "../admin/report";
$parent_dir = dirname($rebuilt_dir);

if(!is_dir($parent_dir)) { 

    if(!mkdir($parent_dir))
        echo "Error creating dir: ".$!;

    if(!is_dir($rebuilt_dir)) { 
        if(!mkdir($rebuilt_dir))
            echo "Error creating dir: ".$!;

}