Slow running ajax with php

[brazenskies]

In the past I have used ajax successfully with asp but wehn I use exactly the same code with a php application it runs incredibly slowly...

Here is my ajax. I have simplified the php file to rule out any slowness coming from an sql query


function createRequestObject() {
var ro;
if (window.XMLHttpRequest) {
ro = new XMLHttpRequest();
}else if (window.ActiveXObject) {
try {
ro = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
ro = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e) {}
}
}
return ro;
}
function dictionary() {

if (document.getElementById("location").value == ""){
document.getElementById("dictionary").style.display = 'none';
}else{
document.getElementById("dictionary").style.display = 'block'
var theInput = document.getElementById("location").value;
var theType= document.getElementById("searchType").innerHTML;

http = createRequestObject();
http.open('get', 'dictionary.php');
http.onreadystatechange = handleDictionaryResponse;
http.send(null);
document.getElementById("dictionary").innerHTML = '<img src="images/loader.gif"/ >'
}
}

function handleDictionaryResponse() {

if(http.readyState == 4){
var theResponse = http.responseText;
document.getElementById("dictionary").innerHTML = theResponse;
}

}


and here is the very basic contents of my php file...

echo 'hello, world!';

When I call the ajax using...

<input type="text" name="location" id="location" value="" onkeyup="dictionary()"/>

..it runs successfully, without fail but it takes up to 5 or 6 seconds to return "Hello, world!" to the screen.

I decided to use a simple asp file to see if it makes any difference...

response.write("Hello, world!")

I changed the red line above to "dictionary.asp" and it runs instantly without any delay whatsoever.

Has anyone else experience any issues like this with php?

Thanks in advance!

[brazenskies]

I fear that this might have something to do with how php was configured on IIS