PHP Session variables in multiple pages

Question

So, here I have page1.php:

<form action="action_form.php" method="post">
<select name="font_syle">
<option value="tahoma">Tahoma</option>
<option value="arial">Arial</option>
</select>
<input type="submit" value="Done" />
</form>

Here action_form.php:

<?php
session_start();
$font_style = $_POST["font_syle"];
$_SESSION["font_syle"] = $font_style;
if($_SESSION["font_syle"] == 'tahoma') $font_style = 10;
else if($_SESSION["font_syle"] == 'arial') $font_style = 20;

$total = $font_style;

echo $total;
?>

And here page.php

<?php 
ob_start();
include 'action_form.php';
ob_end_clean();

echo $total;
?>

I don't know why the value of "$total" is not printed on page.php

Do you post the font_syle param in page.php??

moonwave99
– moonwave99

2012-09-28 19:49:18 +00:00
Commented Sep 28, 2012 at 19:49 — moonwave99
– moonwave99, Commented Sep 28, 2012 at 19:49
so you want to print the $font_style in second page

user1529342
– user1529342

2012-09-28 19:49:24 +00:00
Commented Sep 28, 2012 at 19:49 — user1529342
– user1529342, Commented Sep 28, 2012 at 19:49

andrewsi · Accepted Answer · 2012-09-28 19:51:14Z

4

page.php includes action_form.php. That sets the value of $font_style to:

$font_style = $_POST["font_syle"];

Since page.php hasn't just been posted through a form, it's setting $font_style to an empty string. So when you come to echo it out, there's nothing there to echo.

answered Sep 28, 2012 at 19:51

andrewsi

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2 Comments

andrewsi Over a year ago

The easiest way would be to just reference the $_SESSION variable directly

andrewsi Over a year ago

Add the end of action_form.php, add a line $_SESSION['font_size'] = $font_style;. Then you can print it on other pages with echo $_SESSION['font_size'];

user1529342 · Accepted Answer · 2012-09-28 19:51:00Z

0

You can do echo $_SESSION["font_syle"]; in the page.php to print it

answered Sep 28, 2012 at 19:51

user1529342

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Comments

David Bélanger · Accepted Answer · 2012-09-28 19:52:59Z

0

The reason is your form is going to action_form.php and store the data inside the variable $_SESSION.

When you open page.php the data doesn't exist anymore because $total does not move between page.

The solution here is to change :

<form action="action_form.php" method="post">

for

<form action="page.php" method="post">

OR

Print out the session variable instead.

answered Sep 28, 2012 at 19:52

David Bélanger

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4 Comments

XmLmX2 Over a year ago

I want to use the result of the form in multiple pages.

David Bélanger Over a year ago

@user1689166 Then store this either inside a database or inside the array $_SESSION and on every page call session_start() on the first line.

XmLmX2 Over a year ago

How can I make "$total" to be inside the $_SESSION?

Jan K. Over a year ago

@user1689166: Google can help here sometimes. $_SESSION is an array so treat it as such, e.g. $_SESSION['foo'] = "bar". php.net/manual/en/language.types.array.php

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