pathinfo() function basically contains the information of the file path. It will take two parameters:

• path(required) : path whose information is needed.
• options(optional) :tells which elements to return. Values are PATHINFO_DIRNAME(returns directory name), PATHINFO_BASENAME(return basename), PATHINFO_EXTENSION(return extension), PATHINFO_FILENAME (return filename)

This function returns an array or string depends upon the value of options. By deafult, all values are returned if options is not set.

For example:

<?php
$path_info = pathinfo('/www/htdocs/demo.php');

echo $path_info['dirname'], "\n";
echo $path_info['basename'], "\n";
echo $path_info['extension'], "\n";
echo $path_info['filename'], "\n"; // since PHP 5.2.0
?>

When you will execute the above script it will display:

/www/htdocs
demo.php
php
demo