I am very new to PHP.
I want to transfer data between pages.
In my requirements I have the home page first, in that I have 3 fields: name, address, pin and then submit button.
When I entered the above fields and then click on submit, it moves to page2.php, it has form data.
I have transferred the first form data to second page. Now in second page I have a submit button. When I click on that button the data is submitted to a MySQL database.
My problem is, how can I move first page values to insertdata.php page and submit the data ?
There are two ways with which you can do this
Sessions
Hidden input fields
Sessions
To pass data from one page to another, you first need to call session_start() on all pages that are going to use $_SESSION superglobal variable.
Then you can store your values in sessions by using
$_SESSION['name'] = $_POST['name'];
$_SESSION['address'] = $_POST['address'];
$_SESSION['pin'] = $_POST['pin'];
To use these values in the second page, simply call them by their names. Ex:
$name = $_SESSION['name']; // will contain the value entered in first page
==================================================================================
Hidden Input Fields
This is more of a tedious approach but it does the job none the less. The process involves storing data that needs to be passed onto to different pages in hidden fields and later accessing them via the $_POST or $_GET superglobal.
page1.php (which posts to page2.php)
<input type="text" value="Page 1 content" name="content" />
<input type="text" value="Page 1 body" name="body" />
page2.php (which posts to page3.php)
<input type="hidden" value="<?php echo $_POST['content']; ?>" name="content" />
<input type="hidden" value="<?php echo $_POST['body']; ?>" name="body" />
<input type="text" value="Page 2 content" name="content2" />
<input type="text" value="Page 2 body" name="body2" />
page3.php
echo $_POST['content']; // prints "Page 1 content"
echo $_POST['body']; // prints "Page 1 body"
echo $_POST['content2']; // prints "Page 2 content"
echo $_POST['body2']; // prints "Page 2 body"
just use the below code in your first page <?php session_start(); ?>
and use the following code in your sencond page
<?php
$name = $_SESSION['name'];
$address = $_SESSION['address'];
$pin = $_SESSION['pin'];
echo $name."<br/>";
echo $address."<br/>";
echo $pin."<br/>";
?>
or you can use post or get method as below
For GET Method
<?php
$name = $_GET['name'];
$address = $_GET['address'];
$pin = $_GET['pin'];
echo $name."<br/>";
echo $address."<br/>";
echo $pin."<br/>";
?>
For POST METHOD
<?php
$name = $_POST['name'];
$address = $_POST['address'];
$pin = $_POST['pin'];
echo $name."<br/>";
echo $address."<br/>";
echo $pin."<br/>";
?>
To store data between page changes, you can use the superglobal $_SESSION array.
Example
Page 1
$_SESSION['name'] = "John";
Page 2
echo $_SESSION['name'];
Output
John
Make sure you put session_start() at the top of each page that requires the use of sessions.
Click here for more information on Sessions.
Basically when you submit the data in the first page save them in the session then redirect to the second page.
In the second page just load them.
Page 1:
<?php session_start();
$_SESSION["var_name"] = $some_value;
?>
page 2:
<?php session_start();
$my_var = $isset($_SESSION["var_name"])?$_SESSION["var_name"]:null;
?>
you test the value of my_var, if it's empty then redirect to the first page or show an error message.
session tutorial
http://www.w3schools.com/php/php_sessions.asp
Mysql insert tutorial
http://www.tizag.com/mysqlTutorial/mysqlinsert.php
POST/GET tutorial
http://www.tizag.com/phpT/postget.php
Like REQUEST, PHP maintains a map for session in which you could dump these values and across the pages.
e.g.
$_SESSION['name']='foo';
But the page where you would like to use session, you need to start the session using the method session_start(); . But this method call should be the first line in your php.
http://www.w3schools.com/php/php_sessions.asp
Related
I just sent data to a page called diak_o.php with post method but I need to use this data on an another page. How can I send it to two pages or send from the first page to the next?
<form action="diak_o.php" method="post">
<input type="text" name="name"><br>
<input type="submit" value="Bejelentkezés" />
</form>
You could store it in Sessions and access it on multiple pages like this:
Page 1:
<form action="page2.php" method="post">
<input type="text" name="page1text"/>
<input type="submit"/>
</form>
Page 2:
<?php
session_start();
$dataFromPage1 = $_SESSION['page1text'] = $_POST['page1text'];
echo $dataFromPage1;
?>
You can use $_SESSION or just but i think $_POST should still work in the next file too...
when you send that data from this page to second page like diak_o.php in this page you can access it by below code.
in diak_o.php write code like below.
<?PHP
session_start();
echo $_POST['name'];
$_SESSION["name"] = $_POST['name'];
?>
in the other page you can use $_SESSION["name"] by accessing it.
you can also use COOKIE OF PHP.
On this URL there are different methods for passing data from one page to another.
http://www.discussdesk.com/how-to-get-data-from-one-page-to-another-page-in-php.htm
Thanks.
You need to give your button a name attribute, then on diak_o.php you check if the button isset, after that you check if the text input is not empty, else assign a session to the text input
Your Form
<form action="diak_o.php" method="post">
<input type="text" name="name"><br>
<input type="submit" value="Bejelentkezés" name="submit" />
</form>
diak_o.php
<?php
session_start();
if(isset($_POST['submit'])){
if(empty($_POST['name'])){
die("enter name");
}else{
$_SESSION['name']= $_POST['name'];
}
}
?>
anotherpage.php
<?php
session_start();
echo $_SESSION['name']; // will output the value from form.
?>
when ever your wanna use the value on your pages, just use $_SESSION['name'];
My website involves a user submitting data over several pages of forms. I can pass data submitted on one page straight to the next page, but how do I go about sending it to pages after that? Here's a very simplified version of what I'm doing.
Page 1:
<?php
echo "<form action='page2.php' method='post'>
Please enter your name: <input type='text' name='Name'/>
<input type='submit' value='Submit'/></form>";
?>
Page 2:
<?php
$name=$_POST["Name"];
echo "Hello $name!<br/>
<form action='page3.php' method='post'>
Please enter your request: <input type='text' name='Req'/>
<input type='submit' value='Submit'/></form>";
?>
Page 3:
<?php
echo "Thank you for your request, $name!";
?>
The final page is supposed to display the user's name, but obviously it won't work because I haven't passed that variable to the page. I can't have all data submitted on the same page for complicated reasons so I need to have everything split up. So how can I get this variable and others to carry over?
Use sessions:
session_start(); on every page
$_SESSION['name'] = $_POST['name'];
then on page3 you can echo $_SESSION['name']
You could store the data in a cookie on the user's client, which is abstracted into the concept of a session. See PHP session management.
if you don't want cookies or sessions:
use a hidden input field in second page and initialize the variable by posting it like:
page2----
$name=$_POST['name']; /// from page one
<form method="post" action="page3.php">
<input type="text" name="req">
<input type="hidden" name="holdname" value="<? echo "$name"?>">
////////you can start by making the field visible and see if it holds the value
</form>
page3----
$name=$_POST['holdname']; ////post the form in page 2
$req=$_POST['req']; ///// and the other field
echo "$name, Your name was successfully passed through 3 pages";
As mentioned by others, saving the data in SESSION is probably your best bet.
Alternatly you could add the data to a hidden field, to post it along:
page2:
<input type="hidden" name="username" value="<?php echo $name;?>"/>
page3
echo "hello $_POST['username'};
You can create sessions, and use posts. You could also use $_GET to get variables from the URL.
Remember, if you aren't using prepared statements, make sure you escape all user input...
Use SESSION variable or hidden input field
This is my workaround of this problem: instead of manually typing in hidden input fields, I just go foreach over $_POST:
foreach ($_POST as $key => $value) {
echo '<input type="hidden" name="' . $key . '" value="' . $value . '" />';
}
Hope this helps those with lots of fields in $_POST :)
my page receives data which i retrieve with $_post. I display some data and at the bottom of page my button has to save data to mysql. I could submit form to next page, but how do i access the data that I have retrieved with post then? Lets say i have following code (in reality alot more variables ..):
<?php
$v= $_POST["something"];
echo $v;
echo "Is the following information correct? //this would be at the bottom of the page with the buttons
?>
<input type="button" value="submit data" name="addtosql">
You can do it in two methods:
1) You can save the POST variable in a hidden field.
<input type="hidden" name="somevalue" value="<?php if(isset($_POST["something"])) echo $_POST["something"];?>" >
The hidden value also will get passed to the action page on FORM submission. In that page you can access this value using
echo $_POST['somevalue'];
2) Use SESSION
You can store the value in SESSION and can access in any other page.
$v= $_POST["something"];
session_start();
$_SESSION['somevalue']=$v;
and in next page access SESSION variable using,
session_start();
if(isset($_SESSION['somevalue']))
echo $_SESSION['somevalue'];
Take a look. Below every thing should be on single php page
// first create a function
function getValue($key){
if(isset($_POST[$key]))
return $_POST[$key];
else
return "";
}
// process your form here
if(isset($_POST['first_name']){
// do your sql stuff here.
}
// now in html
<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
<input type="text" name="first_name" value="<?php echo getValue("first_name"); ?>" />
<input type="submit" />
</form>
Explanation
I have a plain HTML form with a few fields
I post it to my controller function
In the function I var_dump the POST data
public function actionReceive()
{
echo "<pre>";
var_dump($_POST);
echo "</pre>";
exit();
}
On screen php shows the POST data is empty
In Firebug I can see the POST data
Question
Why is the POST data not displayed in the var_dump?
When I post it directly to a view file in site/page the POST is displayed with var_dump.
why are you using var_dump($_POST) ??
If you want to pass data from one page to another in PHP just create 2 files. Let's sets first file name as send.html, and another one as receive.php.
Now put these codes into send.html file:
<form method="post" action="catching-var.php">
1. <input type="text" name="name1"/><br/>
2. <input type="text" name="name2"/><br/>
3. <input type="text" name="name3"/><br/>
4. <input type="text" name="name4"/><br/>
<input type="submit" name="submit"/>
</form>
Also put these lines into receive.php file:
<?php
$name0 = $_POST['name0'];
$name1 = $_POST['name1'];
$name2 = $_POST['name2'];
$name3 = $_POST['name3'];
$name4 = $_POST['name4'];
echo $name0.'<br/><br/>';
echo $name1.'<br/><br/>';
echo $name2.'<br/><br/>';
echo $name3.'<br/><br/>';
echo $name3.'<br/><br/>';
?>
Put some values into the HTML textbox fields and click the Submit button.
EDIT: If you do this in Yii Framework all of these operations and codes are same. But you must paste the PHP codes in action. That's all.
Please tell me; in which step you have problem?
Thanks. Best regards.
I've created a registration form that successfully passes its variables from the registration page (go-gold.php) to a summary/verfication page (go-gold-summary.php). The data appears correctly on the second page.
However, I want to able to use an image button to return back to the registration page, in case the user made an entry error. Going back, the original form should now be populated with the data that was first entered.
The problem is that I cannot re-send/return the data from the second page, back to the first. My text fields appear blank. I do NOT want to use Session variables.
The code is truncated from the entire page.
Registration Page (go-gold.php):
<?php
$customer_name = $_POST['customer_name'];
?>
<form action="go-gold-summary.php" method="post">
Name: <input type="text" name="customer_name" id="customer_name" value= "<?php echo $customer_name ?>" />
<input name="<?php echo $customer_name ?>" type="hidden" id="<?php echo $customer_name ?>">
</form>
Summary Page (go-gold-summary.php)
<?php
$customer_name = $_POST['customer_name'];
?>
<form action="go-gold.php" method="post">
Name: <?php echo $customer_name ?> <input type="hidden" id="<?php echo $customer_name ?>" name="<?php echo $customer_name ?>">
<INPUT TYPE="image" src="images/arrow_back.png" id="arrow" alt="Back to Registration"> (Button to go back to Registration Page)
</form>
Thanks!
go-gold-summary.php should be changed like this.
<?php
$customer_name = $_POST['customer_name'];
?>
<form action="go-gold.php" method="post">
Name: <?php echo $customer_name ?> <input type="hidden" value="<?php echo $customer_name ?>" name="customer_name">
<INPUT TYPE="submit" src="images/arrow_back.png" id="arrow" alt="Back to Registration"> (Button to go back to Registration Page)
</form>
notice how I've changed this line
<input type="hidden" id="<?php echo $customer_name ?>" name="<?php echo $customer_name ?>">
into this
<input type="hidden" value="<?php echo $customer_name ?>" name="customer_name">
$_POST is an associative array and as you submit the form it will be populated like this:
$_POST["index"] = value;
where "index" is the text field "name" and value is the text field value.
You've missed that one in your code. Just update it with my code and it will work
Why you would not want to use the php session? Please give any reason for not to use it. I am asking this way since my reputation does not allow me to comment questions or answers any other than my own. Plese do not -1 for this.
Another way could be using cookies to store the data temporarily, but that and posting the data back and forth in the post request is really insecure compared to session.
there are very few ways to maintain variables across pages. The alternative is to have separate form on the second page with hidden text fields containing the $_POST data, and the submit button calls the previous page. No way of getting around the "back button" on a browser though unfortunately.
I missed the bold text about the session variables - disregard if this does not apply:
one way to maintain variables across pages on the server side is to use $_SESSION
first include the following at the top of your PHP pages to keep a session active:
session_start();
once you submit the for and move to page 2, add the following:
$_SESSION['customer_name'] = $_POST['customer_name'];
As well, on the first page, you could change the form element as such:
<input type="text" name="customer_name" value="<?PHP if isset($_SESSION['customer_name'] || !empty($_SESSION['customer_name'])) { echo $_SESSION['customer_name']; } ?>">
this will keep the filled in data and display it when the user returns tot he page, and if they put in something different it will be updated when they hit page 2 again.