simple php api help?

[cindreta]

ok, basicly i don't understan how this api stuff works but here is what i wanna do: i have a small cms and i would like it if i could integrate some kind of version checking for the cms,for instance if a client has like v1.2 and there is a newer version it should warn him. so i think i am supposed to make an api call to my server and check the latest version and send it back to the clients cms.

 

so i need help writing that server api and the client code. im thinking that the lateste version could be kept in a xml file like myserver.com/api.xml and then the client code reads it and compares it

 

if somebody can post some code examples i would be very thankfull

[JonnoTheDev]

There are many types of API calls you can make dependent on what the remote server is setup to accept i.e SOAP calls, XML-RPC & REST. REST are the most basic types of call and is really what you should implement for something so simple as you describe. The client code will make a call over HTTP GET to a script on your server. The response is XML. The client reads XML and processes i.e

 

I would use CURL but heres a dirty example

<?php
// client api call
$xml = file_get_contents("http://domain.com/api/getversion.php");
$obj = simplexml_load_string($xml);
?>

getversion.php

<?php
// server receive call
// get latest version from db
$result = mysql_query("blah....");
$row = mysql_fetch_assoc($result);
// display
$output  = '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>';
$output .= '<response>';
$output .= '<item>';
$output .= '<version>'.$row['version'].'</version>';
$output .= '</item>';
$output .= '</response>';

// display xml
header('Expires: Mon, 26 Jul 1997 05:00:00 GMT');
header('Last-Modified: '.gmdate('D, d M Y H:i:s').'GMT');
header('Cache-Control: no-cache, must-revalidate');
header('Pragma: no-cache');
header('Content-Type: text/xml');
print $output;
exit();
?>

 

[cindreta]

wow thank you so much i get it now, and thank you for the code sample u are the best : )