The submission of data from an HTML form on a web page can be performed by PHP.
The HTML form tag's action attribute is used to nominate a PHP script that will process the form data.
The form tag's action attribute determines how the data is sent to the script.
Form submission methods may be either "GET" or "POST"

The "GET" method appends name=value pairs to the URL and is mostly used to request information - such as retrieving a database record.
PHP also provides a special "superglobal" the $_POST array variable in which it stores data submitted by the POST method.
It creates an array element of the same name as each submitted form element name and it stores the data value that they contain.
For example the form element defined by the input statement below
<input type = "text" name = "email">
will create an array element named $_POST['email'] containing the value entered into that form input by the user.
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