CODEWITHSUNDEEP
php
Chris Mirno
Chris Mirno

Reputation: 347

PHP detect if in subdirectory

I want to determine if the PHP file I am on install.php is in a subdomain/subdirectory (basically not at domain.com/install.php).

Found solution to my problems

see below

Upvotes: 7

Views: 5009

Answers (6)

Andre Van Zuydam
Andre Van Zuydam

Reputation: 799

My answer is not 100% complete because it hasn't been tested on all server environments, but I can confirm this will work if using the embedded PHP web engin or using an apache server with a symlinked web folder. The function returns the subfolder in the form /folder because that is what I needed. If someone can check Nginx it will help a lot. Notice the use of CONTEXT_DOCUMENT_ROOT vs DOCUMENT_ROOT && SCRIPT_NAME vs REQUEST_URI because that could mean a router URL vs actual live file. To use as per the asked question you could say

If (!empty(getSubFolder())) {
  //Do some stuff here
}

/**
     * Logic to determine the subfolder - result must be /folder
     */
    function getSubFolder() {

        //Evaluate DOCUMENT_ROOT && CONTEXT_DOCUMENT_ROOT
        $documentRoot = "";
        if (isset($_SERVER["CONTEXT_DOCUMENT_ROOT"])) {
            $documentRoot = $_SERVER["CONTEXT_DOCUMENT_ROOT"];
        } else
            if (isset($_SERVER["DOCUMENT_ROOT"])) {
                $documentRoot = $_SERVER["DOCUMENT_ROOT"];
            }
            $scriptName = $_SERVER["SCRIPT_FILENAME"];



            //echo str_replace($documentRoot, "", $scriptName);
            $subFolder = dirname( str_replace($documentRoot, "", $scriptName));

            if ($subFolder === "/" || (str_replace($documentRoot, "", $scriptName) === $_SERVER["SCRIPT_NAME"] && $_SERVER["SCRIPT_NAME"] === $_SERVER["REQUEST_URI"])) {
                $subFolder = null;
            }

            return $subFolder;
    }

Upvotes: 0

Praveen Kumar
Praveen Kumar

Reputation: 11

if ($handle = opendir('directory/subdirectory/')) {

    while (false !== ($entry = readdir($handle))) {

        if (strpos($entry, '.php') !== false) {
          echo $entry."<br>";
        }
    }

    closedir($handle);
}

Upvotes: 0

drew010
drew010

Reputation: 69937

Your syntax error is because you are missing the ; at the end of $scriptname="install.php".

Your method looks like it should work okay.

Another way you could determine if the file is installed at the domain root instead of a folder or subdomain would be something like this:

function subdomboolcheck()
{
    $root = $_SERVER['DOCUMENT_ROOT'];
    $filePath = dirname(__FILE__);

    if ($root == $filePath) {
        return false; // installed in the root
    } else {
        return true;  // installed in a subfolder or subdomain
    }
}

Upvotes: 3

Barmar
Barmar

Reputation: 780909

Use dirname($_SERVER['SCRIPT_NAME']) to get the directory portion of the URI.

Upvotes: 6

Chris Clower
Chris Clower

Reputation: 5104

To scan specific directories:

if(file_exists('/subdir/install.php')) {
    // it exists there
} elseif(file_exists('/subdir2/install.php')) {
    // it exists there
} else {
    // it's not in these directories
}

To scan all directories:

$files = glob('/*');

foreach($files as $file) {
 //check to see if the file is a folder/directory
    if(is_dir($file)) {
        if(file_exists($file . 'install.php')) {
            // it was found   
        } else {
            // it was not found
        }
    }
}

Upvotes: 0

Oussama Jilal
Oussama Jilal

Reputation: 7739

Instead of using $_SERVER['SCRIPT_NAME'] use $_SERVER['REQUEST_URI']

See PHP $_SERVER Documentation

Upvotes: 0

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