Below is a simple example of code to fetch results from a REST XML API.
This is just a small portion I have extracted from my real PHP class for this question.
in the API URL which returns an XML document, I am curious about how I could fetch all the results from 1 page and then move on to fetch from the next page.
$this->api_page sets the page that the API returns data from.
Looking at the basic code below using SimpleXMLElement how could I for example return the data from 10 pages or all pages in the API starting at a page number, loading the results for that page and then fetching the next page an moving on.
Right now I am doing it with JavaScript and PHP by passing a Page number in the URL to my script using $_GET['page'] the problem with this is it requires a user to load the page and it's kind of sloppy.
My real API script will be ran from a Cron job on the server, so with that in mind, how could I fetch all pages?
I ask this question based on this example code below but also because it is a task that I often have to do on other projects and I don't know a good way of doing this?
<?php
$this->api_url = 'http://api.rescuegroups.org/rest/?key=' .$this->api_key.
'&type=animals&limit=' .$this->api_limit.
'&startPage='. $this->api_page;
$xmlObj = new SimpleXMLElement($this->api_url, NULL, TRUE);
foreach($xmlObj->pet as $pet){
echo $pet->animalID;
echo $pet->orgID;
echo $pet->status;
// more fields from the Pet object that is returned from the API call
// Save results to my own Database
}
?>
Based on the assumption that you run on a pretty stable environment you could loop through the pages like this:
<?php
$this->base_url = 'http://api.rescuegroups.org/rest/?key=' .$this->api_key.
'&type=animals&limit=' .$this->api_limit.
'&startPage=';
$start_page = $this->api_page;
$end_page = 10; //If you have a value for max pages.
// sometimes you might get the number of pages from the first returned XML and then you could update the $end_page inside the loop.
for ($counter = $start_page; $counter <= $end_page; $counter++) {
try {
$xmlObj = new SimpleXMLElement($this->base_url . $counter, NULL, TRUE);
foreach($xmlObj->pet as $pet){
echo $pet->animalID;
echo $pet->orgID;
echo $pet->status;
// more fields from the Pet object that is returned from the API call
// Save results to my own Database
}
} catch (Exception $e) {
// Something went wrong, possibly no more pages?
// Please Note! You wil also get an Exception if there is an error in the XML
// If so you should do some extra error handling
break;
}
}
?>
Related
$page = isset($input['page'])?$input['page']:0;
$perPageRecord = 10;
$calls = $this->twilio->calls->page(["to" => "+919876543210"],$perPageRecord,'',$page);
$data = [];
echo $calls->getNextPageUrl;
exit;
I am using above code to get next page url and it print successfully. But i want to print last page url while In php twilio.
Anyone can tell me how can i get last page url using twilio php.
Thanks
It looks like you will need to programmatically extract a returned range and manipulate the resulting data to get the X most recent results (last page).
Replacing Absolute Paging and Related Properties
Usage and Migration Guide for Twilio's PHP Helper Library 5.x
I have a form to add new product. When product is added I need to write notifications in database for users that would be interested in this product. What I want to do is to display success message and continue with saving notifications.
In plain php we would use combination of ob_start(), ob_end_flush() and ignore_user_abort() however I can not get to understand how to get this working in CodeIgniter.
Here is simple example:
if ($this->form_validation->run()){
$this->load->view('success', $data);
$x = 1;
$path = $_SERVER['DOCUMENT_ROOT'].'/test.txt';
$file = fopen($path,"w");
while($x <= 5) {
echo fwrite($file,"new product".$x);
$x++;
sleep(5);
}
fclose($file);
}
Thing is that I do not completelly understand how CI loads view files. In given example I have to wait 25 second (5*5) until view is loaded. So the question have to parts:
How to force loading view immediately?
How to set ignore_user_aborts() in CI?
I am developing a simple system of sample products with Object Oriented PHP, very simple thing. So far, no problem, but I have to create a button that adds a product code recorded in the database to a form in the sidebar. I do not know to develop a shopping cart with OO PHP, and codes that I find always give error because of the call of the database, or when the data list. I've been thinking of doing for JS, any help?
sorry my bad english
I got it, first I did when I click a link step by GET and the ID Code I need after seto it in a cookie, each cookie with an ID. Then I check if cookie has registered with the IDs. Not the best and most correct, but it works (more or less). Now another problem, I need to click two times to get the result as it passes by id and need to be caught refresh = /
I think it was a bit confusing but it is the maximum that dyslexia allows me to do hehehe
Here I set up the structure with the data I have in my product page:
add
<?php
$cod_get = $_GET['cod'];
setcookie("SITENAME_cod_".$id_get."", $cod_get, time()+3600, "/","", 0);
?>
And here I have a loop checking if cookie with ids, I think it will give problems, but for now I think it works ...
Thank you all.
$produto = new produtos();
$i = 0;
$produto->selecionaTudo($produto);
$produto->selecionaCampos($produto);
while($res = $produto->retornaDados()):
$res->id;
$i++;
$get_cookie = $_COOKIE['SITENAME_cod_'.$res->id.''];
if (isset($get_cookie)) {
echo $get_cookie.', ';
}else{
echo "";
}
endwhile;
I've searched far and wide and every CMS tutorial out there either doesn't explain this at all or gives you a huge chunk of code without explaining how it works. Even on stack overflow I can't find anything close to the answer, though I'd be okay with eating my words if someone could point me to the answer.
I am using PHP and mysql for this project.
I am building a CMS. Its extremely simple and I understand every concept I think I'll need except how to dynamically generate pages and page links. The way I want to do it is by having a database table that stores the name of a page and the main content of the page. That's all. Then I'd just call a script to pull the main content of a page into whatever page I happen to call. No big deal, right? Wrong.
Here's the problem. If I were to do this then I'd have to create a file for every page I want to create that calls the script that pulls the content from the correct database row. So I could add all sorts of page names and contents into the table but I don't know how to call them without manually creating new files each time I want to link to a new page.
Ideally there'd be a script that creates links to pages based on the page name row of the DB table as the pages are created. But how do you get those links with the ?=pageName at the end? If I just knew how that worked then I could figure the rest out.
UPDATE
The second answer really confirmed everything I thought I had to do but there is one catch. My plan now is to split up all the code into a series of functions and either include or require them in different templates that will be used to format the way pages are displayed. I need one look for the home page and one other design for the rest of the pages. I'm thinking that I'll have a function that says if ID is 0 then call this page template.php else call this other template file.php. But how do I pass the required variables to these new files? Do I just include the index.PHP page in them?
Bill your actually on the right track. Almost all web software today does extensive URL processing. Traditionally you would have php pages on your web root and then utilize the query string in the URL to refine the page's output. You have already arrived at why this might not be desired. So the popular alternative is the Front Controller design pattern. Basically we funnel every request to your index.php page and then route the request to internal pages or apps outside the web root. This can get complicated fast and everybody seems to implement this pattern in unique ways.
We can utilize this pattern without the routing by simply putting our app in the index page. The script below shows an example of what your trying to do in the simplest of ways. We basically have one page with our script. We can request the virtual pages by changing the id query string in our url. For example www.demo.net/?id=0 can be utilized as an index to your site. This should be the same as www.demo.net without the 'id' query. Just keep solving those problems one by one even if you don't know what the problem is. Once you start looking at other peoples code, then you can start seeing how other people solved the same problems you have.
The solution below will get you started, but then what do you do when you want an admin page? How do you authenticate the user? Do you duplicate alot of the code for yet another page? If your serious about your CMS then your going to want to implement some kind of framework underneath it. A framework to process the url, route to your application, load configuration files, and probably manage your database connection. Yea it gets complicated, but not if you solve each problem one at a time. Utilize classes or functions to share code to start. At the very least include a common "bootstrap" file at the top of your page to initialize common functionality such as a database connection. Read Stack Overflow just to keep up with whats going on. You can learn alot of terminology and probably find some answers to questions you didn't even know you wanted to ask.
Below assume we have a table with the following fields:
page_id
page_name
page_title
page_body
<?php
//<--------Move outside of web root-------------->
define('DB_HOST', 'localhost');
define('DB_USER', 'cms');
define('DB_PASS', 'changeme');
define('DB_DB', 'cms');
define('DB_TABLE', 'cms_pages');
//<---------------------------------------------->
//Display errors for development testing
ini_set('display_errors','On');
//Get the requested page id
if(isset($_GET['id']))
{
$id = $_GET['id'];
}
else
{
//Make page id '0' an index page to catch all
$id = 0;
}
//Establish a connection to MySQL
$conn = mysql_connect(DB_HOST,DB_USER,DB_PASS) or die(mysql_error());
//Select the database we will be querying
mysql_select_db(DB_DB, $conn) or die(mysql_error());
//Lets just grab the whole table
$sql = "SELECT * FROM ".DB_TABLE;
$resultset = mysql_query($sql, $conn) or die(mysql_error());
//The Select Query succeeded, but returned 0 result.
if (mysql_num_rows($resultset)==0)
{
echo "<pre>Add some Pages to my CMS</pre>";
exit;
}
//This is our target array we need to fill with arrays of pages
$result = array();
//Convert result into an array of associative arrays
while($row = mysql_fetch_assoc($resultset))
{
$result[] = $row;
}
//We now have all the information needed to build our app
//Page name - Short name for buttons, etc.
$name = "";
//Page title - The page content title
$title = "";
//Page body - The content you have stored in a table
$body = "";
//Page navigation - Array of formatted links
$nav = array();
//Process all pages in one pass
foreach($result as $row)
{
//Logic to match the requested page id
if($row['page_id'] == $id)
{
//Requested Page
$name = $row['page_name'];
$title = $row['page_title'];
$body = $row['page_body'];
$page = "<b>$name</b>";
}
else
{
//Not the requested page
$page = $row['page_name'];
}
//Build the navigation array preformatted with list items
$url = "./?id=" . $row['page_id'];
$nav[] = "<li>$page</li>";
}
?>
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>SimpleCMS | <?php echo $title; ?></title>
</head>
<body>
<div>
<div id="navigation" style="float:left;">
<ul>
<?php
foreach($nav as $item)
{
echo $item;
}
?>
</ul>
</div>
<div id="content"><?php echo $body;?></div>
</div>
</body>
</html>
I think you need to read about $_GET.
I also recommend a decent PHP book. Forget online tutorials; they are (for the most part) utterly useless.
I'm working on a page where I've listed some entries from a database. Although, because the width of the page is too small to fit more on it (I'm one of those people that wants it to look good on all resolutions), I'm basically only going to be able to fit one row of text on the main page.
So, I've thought of one simple idea - which is to link these database entries to a new page which would contain the information about an entry. The problem is that I actually don't know how to go about doing this. What I can't figure out is how I use the PHP code to link to a new page without using any new documents, but rather just gets information from the database onto a new page. This is probably really basic stuff, but I really can't figure this out. And my explanation was probably a bit complicated.
Here is an example of what I basically want to accomplish:
http://vgmdb.net/db/collection.php?do=browse<r=A&field=&perpage=30
They are not using new documents for every user, they are taking it from the database. Which is exactly what I want to do. Again, this is probably a really simple process, but I'm so new to SQL and PHP coding, so go easy on me, heh.
Thanks!
<?php
// if it is a user page requested
if ($_GET['page'] == 'user') {
if (isset($_GET['id']) && is_numeric($_GET['id'])) {
// db call to display user WHERE id = $_GET['id']
$t = mysql_fetch_assoc( SELECT_QUERY );
echo '<h1>' . $t['title'] . '</h1>';
echo '<p>' . $t['text'] . '</p>';
} else {
echo "There isn't such a user".
}
}
// normal page logic goes here
else {
// list entries with links to them
while ($t = mysql_fetch_assoc( SELECT_QUERY )) {
echo '<a href="/index.php?page=user&id='. $t['id'] .'">';
echo $t['title'] . '</a><br />';
}
}
?>
And your links should look like: /index.php?page=user&id=56
Note: You can place your whole user page logic into a new file, like user.php, and include it from the index.php, if it turns out that it it a user page request.
Nisto, it sounds like you have some PHP output issues to contend with first. But the link you included had some code in addition to just a query that allows it to be sorted alphabetically, etc.
This could help you accomplish that task:
www.datatables.net
In a nutshell, you use PHP to dynamically build a table in proper table format. Then you apply datatables via Jquery which will automatically style, sort, filter, and order the table according to the instructions you give it. That's how they get so much data into the screen and page it without reloading the page.
Good luck.
Are you referring to creating pagination links? E.g.:
If so, then try Pagination - what it is and how to do it for a good walkthrough of how to paginate database table rows using PHP.