How can you link to a file found in a parent directory without the use of the double-period-slash in PHP?

Answer 1

You can use the double-period-slash (../) to signify a link to a parent directory (for a relative path) or trim the contents of the current script's path (found in the magic constant "__FILE__" and the superglobal array key "$_SERVER['PHP_SELF']") with a function like explode and implode to find the directory above it (for an absolute path).

For the latter, here is an example:





// Get the current script path
$path = $_SERVER['PHP_SELF']; // "/example/path/index.php"
// Divide up the path (into an array) by its forward-slashes
$path = explode('/', $path);
// Remove the last two array keys to get the parent directory
unset($path[count($path)]); // Removes last key
unset($path[count($path) - 1]); // Removes second-to-last key
// Put the path pieces back together with a slash between each piece (to form the path) // Also, add a forward-slash to make it appear as a directory
$path = implode('/', $path) . '/';
// Use the new path as desired!
echo $path; // "/example/"
?>