CODEWITHSUNDEEP
phpjavascriptxmlhttprequest
Dymond
Dymond

Reputation: 2277

send POST with httprequest to php

I want to send a random number to an xml-file with http request and php. But i cant really figure out how to add the value of the generated number and add it to the post.

This is what i have so far.

var x=document.getElementsByClassName("demo");
x[x.length-1].innerHTML=Math.floor((Math.random()*1000000)+1);
// Generates a random number and print it on the last demo class

var xmlhttp;
if (window.XMLHttpRequest)
  {// code for IE7+, Firefox, Chrome, Opera, Safari
  xmlhttp=new XMLHttpRequest();
  }
else
  {// code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
xmlhttp.onreadystatechange=function()
  {
  if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
  //  document.getElementById("myDiv").innerHTML=xmlhttp.responseText;
    }
}
xmlhttp.open("GET","/project3/php/update.php",true); //Calls the php update file
xmlhttp.send();

PHP file

<?php 
       $dom = new DOMDocument();
       $dom->load('../stickers.xml');
       $stickers = $dom->documentElement;
       $xpath = new DOMXPath($dom);
       $result = $xpath->query('/stickers/sticker[id="$POST"]/id'); //Not sure.
       $result->item(0)->nodeValue .= 'hi';
       echo $dom->saveXML();
       $dom->save('../stickers.xml');

?>

Upvotes: 1

Views: 746

Answers (1)

Emissary
Emissary

Reputation: 10148

The get method sends parameters as a query string in the URL, whereas the post query string is sent within the http headers:

xmlhttp.open("POST","/project3/php/update.php",true);
xmlhttp.setRequestHeader("Content-type","application/x-www-form-urlencoded");
xmlhttp.send("random="+x[x.length-1].innerHTML);

On the PHP side of things, posts variables are added to a global associative array like so:

<?php echo $_POST['random'];

Upvotes: 1

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