Data delivery and reception

The PHP language provides us with a simple way to handle forms, enabling us to process information inserted by the user.

When designing the form, we must indicate the PHP page that will process the form, as well as the method used to insert the information into the page.

<html>
<head>
<title>PHP Example</title>
</head>
<body>
<H1>Processing forms</H1>
Insert your name:
<FORM ACTION="procesa.phtml" METHOD="GET">
<INPUT TYPE="text" NAME="name"><BR>
<INPUT TYPE="submit" VALUE="send">
</FORM>
</body>
</html>

Execute View code

By pressing the "Send" button, the content in the text box is sent to the page indicated in the attribute ACTION of the FORM tag.

In versions previous to 4.2.0, PHP created a variable for each element of FORM, this created variable had the same name than the text box in the previous page and the value already inserted. But due to safety reasons, since then in order to have access to the form variables, we shall use the parameters array $_POST[] or $_GET[] depending on the method used to send the parameters.

In this example, we have created an entrance in the array $_GET[] with the index 'name' and with the value inserted by the web browser.

<html>
<head>
<title>PHP Example</title>
</head>
<body>
<H1>Processing forms</H1>
Name: <?php echo $_GET['name'] ?>
<br>
</body>
</html>

View code

Library

Method GET y POST

Basic PHP

Basic concepts

Operators

Statements

Functions and libraries

- Functions
- Library

Advanced PHPo

Processing forms

Database access

Security

Sessions (PHP4)


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