Processing form data with PHP
Using a Form to Collect Data
Here we are going to learn how to take data from the user through an HTML form and then process it through a PHP program and output it. If you are interested in making PHP work with SQL you should visit this tutorial and if you are interested in sending data via email you should visit this tutorial as neither concepts will be covered in this lesson.
For this tutorial you will need to create two pages. On the first page we will create a simple HTML form to collect some data. Here is an example:
<html>
<head><title>Test Page</title></head>
<body>
<h2>Data Collection</h2><p>
<form action="process.php" method="post">
<table>
<tr><td>Name:</td><td><input type="text" name="Name" /></td></tr>
<tr><td>Age:</td><td><input type="text" name="Age" /></td></tr>
<tr><td colspan="2" align="center"><input type="submit" /></td></tr>
</table>
</form>
</body>
</html>
This page will send the Name and Age data to the page process.php
Processing the Form Data
Now lets create process.php to use the data from the HTML form we made:
<?php
print "Your name is ". $Name;
print "<br />";
print "You are ". $Age . " years old";
print "<br />";
$old = 25 + $Age;
print "In 25 years you will be " . $old . " years old";
?>
As you may be aware, if you leave out the method="post" part of the form, the URL with show the data. For example if your name is Bill Jones and you are 35 years old, our process.php page will display as http://yoursite.com/process.php?Name=Bill+Jones&Age=35 If you want, you can manually change the URL in this way and the output will change accordingly.
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