KoolAjax callback supports all basic datatypes. The server-side function can return string, boolean, integer or array datatype.
<?php
require $KoolControlsFolder."/KoolAjax/koolajax.php";
$koolajax->scriptFolder = $KoolControlsFolder."/KoolAjax";
if($koolajax->isCallback)
{
sleep(1);
}
function returnString()
{
$result = "This is string from server!";
return $result;
}
function returnInteger()
{
$result = 1234;
return $result;
}
function returnBoolean()
{
$result = true;
return $result;
}
function returnArray()
{
$result = array("name"=>"John Smith","age"=>54);
return $result;
}
//Enable check string function to be called at client-side
$koolajax->enableFunction("returnString");
$koolajax->enableFunction("returnInteger");
$koolajax->enableFunction("returnBoolean");
$koolajax->enableFunction("returnArray");
?>
<form id="form1" method="post">
<?php echo $koolajax->Render();?>
<style type="text/css">
.button
{
width:150px;
}
.loading
{
visibility:hidden;
}
.block
{
padding-left:10px;
padding-bottom:10px;
}
.result
{
padding-left:10px;
}
</style>
<div class="block">
<input type="button" class="button" value="Get String from server" onclick="get_string()" />
<span id="string_result" class="result"></span>
<img id="string_loading" src="Images/loading.gif" class="loading" alt="Loading..."/>
</div>
<div class="block">
<input type="button" class="button" value="Get Integer from server" onclick="get_integer()" />
<span id="integer_result" class="result"></span>
<img id="integer_loading" src="Images/loading.gif" class="loading" alt="Loading..."/>
</div>
<div class="block">
<input type="button" class="button" value="Get Boolean from server" onclick="get_boolean()" />
<span id="boolean_result" class="result"></span>
<img id="boolean_loading" src="Images/loading.gif" class="loading" alt="Loading..."/>
</div>
<div class="block">
<input type="button" class="button" value="Get Array from server" onclick="get_array()" />
<span id="array_result" class="result"></span>
<img id="array_loading" src="Images/loading.gif" class="loading" alt="Loading..."/>
</div>
<script type="text/javascript">
//String
function get_string()
{
document.getElementById("string_result").innerHTML = "Server responses:";
koolajax.callback(returnString(),get_string_ondone);
document.getElementById("string_loading").style.visibility = "visible";
}
function get_string_ondone(result)
{
document.getElementById("string_result").innerHTML += "<i>\""+ result+"\"</i>";
document.getElementById("string_loading").style.visibility = "hidden";
}
//Integer
function get_integer()
{
document.getElementById("integer_result").innerHTML = "Server responses:";
koolajax.callback(returnInteger(),get_integer_ondone);
document.getElementById("integer_loading").style.visibility = "visible";
}
function get_integer_ondone(result)
{
document.getElementById("integer_result").innerHTML += result;
document.getElementById("integer_loading").style.visibility = "hidden";
}
//Boolean
function get_boolean()
{
document.getElementById("boolean_result").innerHTML = "Server responses: ";
koolajax.callback(returnBoolean(),get_boolean_ondone);
document.getElementById("boolean_loading").style.visibility = "visible";
}
function get_boolean_ondone(result)
{
document.getElementById("boolean_result").innerHTML += result;
document.getElementById("boolean_loading").style.visibility = "hidden";
}
//Array
function get_array()
{
document.getElementById("array_result").innerHTML = "Server responses:";
koolajax.callback(returnArray(),get_array_ondone);
document.getElementById("array_loading").style.visibility = "visible";
}
function get_array_ondone(result)
{
document.getElementById("array_result").innerHTML += " {\"name\":\""+result["name"]+"\",\"age\":"+result["age"]+"}";
document.getElementById("array_loading").style.visibility = "hidden";
}
</script>
</form>
KoolAjax - Great PHP Ajax FrameworkFullVersion 2.7.0.1 released on 12/04/2011