What is the term for the part of the URL after the directory where the index.php is located?

The term for the part of the URL after the directory where the index.php is located is called the query string. The query string typically starts with a question mark (?) and consists of key-value pairs separated by ampersands (&). It is commonly used to pass data from the client to the server. 

// Get the query string from the URL
$queryString = $_SERVER['QUERY_STRING'];

// Parse the query string into an array of key-value pairs
parse_str($queryString, $params);

// Access individual parameters using their keys
echo $params['key'];

Keywords

URL directory index.php path query string

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