Fault in Ajax php search - php

Question

In the following Ajax based search box, if the character is at position 0 then the respective name in the array is not returning but for characters at other positions everything works well. Please fix this...
PHP
$query = $_GET['query'];
$names = array('abc', 'hello', 'cool', 'fun', 'demo', 'test');
foreach($names as $name)
{
$str = strpos($name, $query);
if(!empty($str))
{
echo "$name ";
}
}
HTML
<form name='myForm'>
Name: <input type='text' onblur="ajaxFunction(this.value);" name='username' /> <br />
Time: <input type='text' disabled="disabled" name='time' />
</form>
AJAX
function ajaxFunction(val) {
var ajaxRequest;
try {
//Opera, Safari and Firefox xml object
ajaxRequest = new XMLHttpRequest();
} catch(e) {
try {
//Internet Explorer xml object
ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
} catch(e) {
try {
//Old browser's xml object
ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
} catch(e) {
return false;
}
}
}
ajaxRequest.onreadystatechange = function(){
if(ajaxRequest.readyState == 4){
document.myForm.time.value = ajaxRequest.responseText;
} else {
//do nothing
}
}
ajaxRequest.open("GET", "names.php?query="+val, true);
ajaxRequest.send(null);
}

Answer 1

You can use the following -
if($str !== FALSE)
{
echo "$name ";
}

Answer 2

That's maybe of the 0 Value returned by strpos (it returns an integer) ... i mean the "if" statement could value it as a false.
Try to compare like
if(strpos($name, $query) === false){ .... do something..... }