stuck why its displaying as undefined instead of returning the correct value. any help would be great. sorry about my awful code. I tried to send the value through cookies and AJAX but still got nothing. Currently i have a call to run the callPHPfunction when the website is loaded then the Test() function runs which runs the Getstatus() that checks the database if the values match a value in the database and return. then the Test() Checks if it has something or not and returns either value as needed.
PHP
if (isset($_GET['functionToCall']) && function_exists($_GET['functionToCall'])) {
call_user_func($_GET['functionToCall']);
}
function Test() {
$status = Getstatus();
if( is_null( $status ) ){
return "test2";
}
if( $status <= 0 ){
return "test1";
}
}
function Getstatus() {
$db =& JFactory::getDBO();
$mc = JRequest::getInt('mc');
$shift = JRequest::getInt('mc');
$fields = array();
$fields[] = "*";
$where = array();
$where[] = "`mc` = ".$db->quote( $mc );
$where[] = "`status` = 0";
$where[] = "`date` = ".$db->quote(date("Y-m-d"));
$where[] = "`shift` = ".$db->quote( $shift );
$query = "SELECT ".implode( ",", $fields );
$query .= " FROM `maintenance`.`autonomous_job` ";
$query .= "WHERE ".implode( " AND ", $where );
error_log($query);
$db->setQuery($query);
$rows = $db->loadObjectList();
if($db->getErrorNum()) {
$error = $db->stderr();
error_log( $error );
return null;
}
return $rows;
}
?>
Javascript/Html
function callPHPFunction(mc) {
var xhttp = new XMLHttpRequest();
xhttp.open("POST", "helper.php?functionToCall=Test", true);
xhttp.send();
jQuery.ajax({
type: "POST",
url: "alert.php",
data: {
task: "Test",
$mc: mc
}
})
}
function FINISHING(mc){
msg += '<br />'+callPHPFunction();
OPERATIONS_errorMsg(msg,0,'barcode');
return false;
}
XMLHttpRequest
or jQuery.ajax
— Pick one. Then read the documentation for how to examine the response. Any Ajax tutorial will explain that. (And your server-side code needs to actually send the data to the client, e.g. with echo
just like any other PHP that generates an HTTP response. Ajax isn't a special case.). msg += '<br />'+callPHPFunction()
- But callPHPFunction()
doesn't return anything.