getting cookie value from php form
what do I set the cookie value and name to be for a value a user may enter in a form? and what do i use to display that value on my second page? (I can't not use cookies for this, so while there may be a smarter way to do this, I would just like to know how to do it with cookies!!) Thanks!
<?php
setcookie($color, 'color');
setcookie($name, 'name');
?>
<?php
echo "<form action=\"form_data.php\" method=\"post\">";
echo "favorite color:<input type=\"text\" name=\"color\" size=\"20\"><br/>";
echo "name:<input type=\"text\" name=\"name\" size=\"20\"><br/>";
echo "<input type=\"submit\" value=\"Submit\" />";
echo "<br /><input type=\"hidden\" name=\"submitted\" value=\"true\" />"开发者_StackOverflow;
?>
data on form_data:
<?php
echo "<b>fav color:</b>".$_COOKIE['color'];
echo "<b>name:</b>".$_COOKIE['name'];
?>
First, you have your form:
<?php
echo "<form action=\"form_data.php\" method=\"post\">";
echo "favorite color:<input type=\"text\" name=\"color\" size=\"20\"><br/>";
echo "name:<input type=\"text\" name=\"name\" size=\"20\"><br/>";
echo "<input type=\"submit\" value=\"Submit\" />";
echo "<br /><input type=\"hidden\" name=\"submitted\" value=\"true\" />";
?>
Then in form_data.php:
<?php
// set the cookie with the submitted user data
setcookie('color',$_POST['color']);
setcookie('name', $_POST['name']);
echo "<b>fav color:</b>".$_COOKIE['color'];
echo "<b>name:</b>".$_COOKIE['name'];
?>
However, you'll notice that the $_COOKIE variables are not available yet... if you reload that page, they will appear.
In order to accomodate this behavior of cookies, you can setup a redirect in form_data.php:
<?php
if (!empty($_POST)) {
// set the cookie with the submitted user data
setcookie('color',$_POST['color']);
setcookie('name', $_POST['name']);
// redirect the user to final landing page so cookie info is available
header("Location:form_data.php");
} else {
echo "<b>fav color:</b>".$_COOKIE['color'];
echo "<b>name:</b>".$_COOKIE['name'];
}
?>
You can redirect them anywhere suitable. Hope this helps and good luck!
function setcookie of your question fail. setcookie($name, $value);
Ex: setcookie('color', 'red');
echo $_COOKIE['color']; //outout: red
I don't know why you want to use cookies.as I know you can use sessions for passing the information of users like this: It is the full example that is working for me
<?php
session_start();
if(array_key_exists('sub',$_POST))
$_SESSION['name']=$_POST['name'];
?>
<html>
<form method="post">
<input type='text' name="name">
<input type='submit' name='sub' value='send my info'>
</html>
and in another page just use this one:
<?php
session_start();
$r=$_SESSION['name'];
echo $r;
?>
remember to call session_start(); on each page when you want to use sessions
Can anyone explain what baraboom wrote:
However, you'll notice that the $_COOKIE variables are not available yet... if you reload that page, they will appear.
<?php
if (!empty($_POST)) {
// set the cookie with the submitted user data
setcookie('color',$_POST['color']);
setcookie('name', $_POST['name']);
// redirect the user to final landing page so cookie info is available
header("Location:form_data.php");
} else {
echo "<b>fav color:</b>".$_COOKIE['color'];
echo "<b>name:</b>".$_COOKIE['name'];
}
?>
Just trying to understand why it is like that since the user is redirected to the page on submit.
加载中,请稍侯......
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