| Working with Form Submissions in PHP | | Print | |
Now that you have been introduced to all the different HTML widgets (or if you happened to skip ahead because you knew of them already) it's time to get into the real PHP-related materials of the chapter. The remainder of this chapter will be focused on accessing and working with form (and related) data.
Retrieving Form Values
After a form has been submitted back to the Web server, if the ACTION attribute of the form is a PHP script, that script is executed and is provided the data that was submitted. But how is this data accessed from within PHP? Thankfully, there are a number of very convenient methods to use when retrieving data.
Depending on what method was used to submit the form data to the PHP script (GET or POST), PHP has two superglobal arrays, called $_GET and $_POST, respectively, that will be used to store this data. These variables are associate arrays containing a list of keys (representing the names of the form elements as specified by their NAME attribute) and their associated values. Hence, the value of the $_GET['mytext'] variable will contain the value of the HTML widget whose NAME attribute is mytext:
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