PHP 03 : GET, POST, Airmail ?

aquafolie · # 1 (**permalink**)

Everything we saw spoke about some variable. I said for example : "$i=1;".
Okay, but it isn't really interactive with the reader.

In order to be interactive we need to permit the reader to send some information, for example by a form.
The form can send a lot of thing but for instance we just see GET and POST.

SENDING :

If you use the method 'get' you will send information into the URL like :
test.php?name=value&name2=value2 and can can send this sort of URL directly by the HTML "<a href=".
but you are limited to 255 characters and some of them are restricted.

If you use the method 'post' you will send information without the URL and you can send a lot of text, code.... but you need to use a form to sending it.

Example of GET :

PHP Code:

  <a href="test.php?page=1">Page 1</a>

I don't use any php code to send an information.
the same by form :

PHP Code:

  <form method="get" action="test.php">
<input type="text" name="page" value="1">
<input type="submit" value="send">
</form>

Example of POST :

PHP Code:

  <form method="post" action="test.php">
<texterea name="mytext"></texterea>
<input type="submit" value="send">
</form>

RECEIVING :
Now An information has been sent to test.php
In order to interact you need to declare or to take the variable POST or GET like this :
$_POST['mytext']
or
$_GET['page']

They are the same variable as $whatyouwant and you can manipulate them like we saw before.

Example :

PHP Code:

  <?php if ($_GET['page']=='1')
{
echo 'all the text html you want'
}elseif($_GET['page']=='2')
{?>
The other text you want for the page 2
<?php } // note : I close the quote php and reopen one after
?>

So now we can see how to interact with your reader !