I just finished products website.There is a search form in the website.
Search result are working fine.when I click on the result item that retrieving based on ID on the next page.
The problem is that When click back I need to search same keyword to get the result list. Is there any solution to show results on that page
You can use sessions ( http://php.net/manual/en/ref.session.php ). There are 2 ways to do it.
Have in your session your search results. So for example will be something like this:
$_SESSION['destination'] = $_POST['destination'];
$_SESSION['ID'] = $_POST['result_id'];
You can have to your session only the ID and then in this id to have your data serialized ( http://php.net/manual/en/function.serialize.php ) . The when you want to export your search again you simply unserialize ( http://php.net/manual/en/function.unserialize.php ). So it will be:
$_SESSION[$my_id] = serialize($_POST);
and to get the data
$data = unserialize($_SESSION[$my_id]);
The most compatible is to use the search term as an $_GET-variable.
Have your search form do a GET instead of a POST, that way what was searched for is retained by the browser.
I'm not sure at what level you are at, but have you thought about caching? You can use Memcaching which would allow you to cache the previous page.
You could also change your query from a POST to a GET like mlaw just mentioned.
You can even use Sessions to keep the results valid. Sessions can be found here
Conceivably, you could save the POST of the search to a variable, pass it forward when you click on the product, then, if you click a link that takes you back, send that information as a new POST. Still wouldn't affect the browser's back button usage, but if you're looking for a programmatic answer, there's one.
Related
I have created a php site, and previously it was listing only products with defined values. I have now changed it to include an array of products for example all products WHERE id = "spotlights"
and this works great so it means I can add new products just to the database, but I still have to add the second page manually. e.g going from the product div on the main page, through to www.example.com/spotlight_1.php
Is there anyway in PHP to carry the data from my index.php e.g. the ID through to the next page? so that I can have a template product.php page, and I can use a database pull to echo the product information required.
So on index.php i click on the product with ID="1" and on the product.php page, it loads the relevant data for product 1.
I can write the php SQL/mySQL calls myself, its just the way to carry accross a value from the previous page which I dont understand
Regards
Henry
p.s.
all the IDs and things are stored in the database already as 1 to 3digit values e.g. 3 or or 93 or 254
Any advice as always is greatly appreciated
Regards
Henry
im not sure if im understading this correctly but you can pass the variable from one page to another using GET variables, or in other words, using the query string in the URL.
So, in index.php you will have links like this:
Product 1
In the second page (product.php) you can get this variable using this code:
$product_id = $_GET['p'];
And then query your database like this:
$query = "SELECT * FROM products WHERE id = '" . $product_id . "'";
$result = mysql_query($query);
Reference: http://www.w3schools.com/php/php_get.asp
Note: Be careful with the way you query your database, the previous code is only a demonstration of how to retrieve the info, but is not a secure solution. I recommend you to check PDO (http://php.net/manual/es/book.pdo.php).
You can use GET if you do not care other users to see your variables, or you can use POST to not let the users what your variables are (useful for password submissions)
One thing to mention is that if you use GET (url?key=value) you need to encode the value using PHP's utf8 enconde function, if you use POST, you don't have to worry about this.
There are a number of ways. You can put the data into session variables, you can POST the data to the 2nd page or pass the data via GET as URL parameters, or you can even save the data in a browser cookie.
Which approach you might use will likely depend on the security requirements for the data and whether you want to be able to access that data strictly via URL (in case of URL parameters).
You can either keep passing the value forward in the request scope until you no longer need it (commonly passed in the url ?var=value), or you can also use sessions if this needs to live longer than the request scope.
I'm trying to create unique urls for user's of a site I'm designing. Basically I want the url to look like this:
http://www.example.com/page.php?user_id=3
Or whatever user_id they are assigned. Basically I want user to be able to go to that url and it generates the page with the info (first name, last name, etc.) of the user from the row in the MySQL table with that user id number. I know that creating the URL would be done by $_GET but this is sort of backwards from that. I want them to be able to go to the URL and the pages gets the variables from the URL.
Sorry if this is basic, I'm having trouble searching for an answer because it always gives me the answer on how to submit a form TO the URL not FROM the URL. Thanks for all the help.
$user_id = $_GET['user_id'];
you could use this to get the variable.And then search the database for the matching id and get get all the details.
Since you want to contain all the details in you form.You could keep adding the other elements like this.
http://www.example.com/page.php?user_id=3&first_name=Max&last_name=Payne
Using $_GET[which element you want the value of]
Accessing the get variables on the page is really simple!.In your case as you want to access the user id,you can get from $_GET['user_id'] and fire the respective query to fetch the user details to populate the page.For more reference you could check here
http://php.net/manual/en/reserved.variables.get.php
I am working Image gallery website. Image search page will work like google image search. On scroll it shows next results using jquery. How to display the same result if user refresh the page?
Thanks, Sham
You can use query string to get the user search parameters or you can use the search text field to show the result on refresh of page.
Using query parameter will help only to show the page from the beginning after refresh, But what i would do is,
There are two options,
Using cookies
Using HTML5 local Storage or session storage
I prefer the second one,
But in both way you can cache the current search data, therefore can be used later. This will help you to display different page of results, where the query parameter remains same.
I have a form that uses XML to get results. From those results users can click to a detail page. My problem is when a user clicks back to the results page, they are asked if they want to submit the form again. How do I create this so back button just displays the results, like on aa.com, ebay, autotrader, etc.
Thanks!
When you submit your page move the $_POST variables into the $_SESSION array and then header redirect the user to the results page.
You should redirect to another page to using redirect() method of codeigniter. This will prevent the browser asking a confirmation on form submission.
Is it just a search page that displays results? Why not use GET rather than POST in your form? Looking at search engines out there, they seem to use GET for their search interface. I can think of a few reasons to use GET rather than POST.
If the operation simply fetches results, semantically, the GET method is more appropriate. GET is used when you are fetching data. POST is more used when you are submitting a change to the application.
If you use GET, clicking on the back button won't give you a dialog asking whether you wish to resubmit the form.
Your users will have a URL directly to a search results page for a particular query that they can share.
Unfortunately CodeIgniter, by default, nukes the query string when processing a request. You can enable the query string in CodeIgniter by following this answer.
i found it difficult,,,, fetching data from database while a buttons are randomly generated in for each how can i fetch
Without understanding what your question really is, you could go trough the mysql query result like this:
// button_text is a database column in this example
while ($row = mysql_fetch_row($result)){
echo "<button type="button">".$row['button_text']."</button>";
}
But to really help you, you need to rephrase your question!
I'll make some assumptions for what you are trying to do:
1. You have buttons that fetch more info from a db
2. The buttons are "randomly" generated, and each calls different info (pets, cars, etc).
You may or may not be using ajax, but I will describe it basically assuming straight php, and you are using a single page (for clarity in my explanation).
What you need to do is have each button either be a link or a submit for a form. This just depends on whether you want to use GET or POST. The buttons will have php generated links (if GET) or values (if POST). For example, using get the link could be "www.file.php?cat=cars". The button would just have the value of "Cars", and since bother are generated, that shouldn't be an issue keeping them the same.
When the page is now reloaded based on the click, the top of the page has a query in it to get the new info. For example, it would run a query looking for all items that have the car category. Then the new information would be displayed, and the new random buttons would show.
VERY IMPORTANT: Sanitize all GET and POST values before using them in a query