I have the following extremely simple PHP tester:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.2/jquery.min.js"></script>
<button id="button">send request</button>
<script>
$("#button").click(function(){
$.ajax({
type: "POST",
url: "ajaxTest.php",
data: {userresponse: "hi"},
success: function(data){
alert(data)
analyse()
}
})
})
var analyse = function () {
<?php
if(isset($_POST["userresponse"])){
$variable = $_POST["userresponse"];
switch($variable){
case "hi":
echo 'alert("' . $variable . '")';
break;
default:
echo 'alert("LOGIC")';
}
}
?>
}
</script>
What's supposed to happen is that when I click the button, it sends the data userresponse: "hi" to the server, and then PHP receives it and alerts the value (i.e. "hi")
However, despite the fact that the file paths are correct, the AJAX send is OK in XHR, the PHP does not receive the value of the data, and the alert(data) returns the entire HTML document.
What is going on and how do I fix this?
Remove analyze() and put your php code in external file called ajaxTest.php, your code works perfect just remove your php code fron analyze and request for external this is bad practice having both in same file(header problems).
Proof:
Related
I'm receiving data from an API (asana) when an event was made in my workspace via a POST method in a file called asanatarget.php
The data is correct and i can store it in file when received.
Looks like that:
{"events":"resource":xxx,"user":xxx,"type":"story","action":"added","created_at":"2019-02-20T14:48:09.142Z","parent":xxx}]}
In the same file I send the data to a new file with AJAX with GET method:
asanatarget.php
<?php
if(isset($_SERVER['HTTP_X_HOOK_SECRET'])) {
$h = $_SERVER['HTTP_X_HOOK_SECRET'];
header('X-Hook-Secret:' . $h);
exit;
}
?>
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
</head>
<body>
<?php
$input = file_get_contents('php://input');
if ($input) {
$entries = json_decode(file_get_contents('php://input'), true);
file_put_contents('targetasanaDATA' . time() . '.txt', json_encode($entries));
?>
<script>
$( document ).ready(function() {
$.ajax({
type: "GET",
url: "/asanawebhook", // Working with laravel, the route is well defined
data: <?php echo json_encode($entries); ?>,
dataType: "json",
success: function(response){
console.log("success " + response);
},
error: function(jqXHR, textStatus, errorThrown) { // What to do if we fail
console.log(JSON.stringify(jqXHR));
}
});
});
</script>
<?php
}
?>
</body>
</html>
When i'm directly loading asanatarget.php with test data, it's working fine and the data is passed to /asanawebhook but when the data is passed directly from the api, it's not working.
I checked and the data is always correct
Your PHP script generates only a HTML page (basically, a text).
The javascript can be interpreted and executed by a browser. But if no browser reads this page and execute it, nothing happens. PHP generates a webpage, nobody reads it, and things ends here.
You can use PHP too to send data via POST. You can build your query with http_build_query() and use file_get_contents().
I try to pass this value to my php code, but I do not know how to do it. post method does not work. (I do not know why).
<script>
var val = localStorage.getItem('sumalist');
$.ajax({
type: "POST",
url: "index.php",
data: {value: val},
success: function () {
console.log(val);
}
});
</script>
and in my php code, value is not set.
if (isset($_POST["value"])) {
echo "Yes, value is set";
$value = $_POST["value"];
}else{
echo "N0, value is not set";
}
PS: My php code is in the same file in js code.
Check if this works
<?php
if(!empty($_POST)) {
$value = (isset($_POST["value"])) ? $_POST["value"] : NULL;
$return = ($value != NULL) ? "Yes, value is: ".$value : "N0, value is not set";
echo $return;
exit;
}
?>
<script src="//code.jquery.com/jquery-3.3.1.js"></script>
<script>
var val = 'value sent';
$.ajax({
type: "POST",
url: "index.php",
data: {value: val},
success: function (ret) {
console.log(ret);
}
});
</script>
Open console for result
Please use console if you're using chrome then open console and try debugging,
And first you run that ajax function in jquery ready function like this
$(document).ready(function (){ $.ajax( replaced for ajax function ) }
If you want to use the response in callback success function, use this:
success: function (ret) {
console.log(ret); //Prints 'Yes, value is set' in browser console
}
In your browser you have Developer Tools - press F12 to open, go to Network tab (FireFox, Chrome, IE - all the same), then reload your page and you will see the line for your AJAX call (if it is performed on load, or trigger your call if this is not the case), select it and right hand you'll see a extra frame where you can see all the details of your request, including request params, headers, response headers, the actual response and many other.
That's the best solution to check your AJAX request without asking uncompleted questions and seeking for the answers in case someone can assemble your full case in his mind.
Believe me - this is the best solution for you and not only for this case!
Of course your JS should be performed when DOM is ready so you have to wrap it in
${function() {
// your code here
});
in case you want to be executed on load.
I am very new to PHP and Javascript.
Now I am running a PHP Script by using but it redirect to another page.
the code is
<a name='update_status' target='_top'
href='updateRCstatus.php?rxdtime=".$time."&txid=".$txid."&balance=".$balance."&ref=".$ref."'>Update</a>
How do I execute this code without redirecting to another page and get a popup of success and fail alert message.
My script code is -
<?PHP
$rxdtime=$_GET["rxdtime"];
$txid=$_GET["txid"];
$balance=$_GET["balance"];
$ref=$_GET["ref"];
-------- SQL Query --------
?>
Thanks in advance.
You will need to use AJAX to do this. Here is a simple example:
HTML
Just a simple link, like you have in the question. However I'm going to modify the structure a bit to keep it a bit cleaner:
<a id='update_status' href='updateRCstatus.php' data-rxdtime='$time' data-txid='$txid' data-balance='$balance' data-ref='$ref'>Update</a>
I'm assuming here that this code is a double-quoted string with interpolated variables.
JavaScript
Since you tagged jQuery... I'll use jQuery :)
The browser will listen for a click event on the link and perform an AJAX request to the appropriate URL. When the server sends back data, the success function will be triggered. Read more about .ajax() in the jQuery documentation.
As you can see, I'm using .data() to get the GET parameters.
$(document).ready(function() {
$('#update_status').click(function(e) {
e.preventDefault(); // prevents the default behaviour of following the link
$.ajax({
type: 'GET',
url: $(this).attr('href'),
data: {
rxdtime: $(this).data('rxdtime'),
txid: $(this).data('txid'),
balance: $(this).data('balance'),
ref: $(this).data('ref')
},
dataType: 'text',
success: function(data) {
// do whatever here
if(data === 'success') {
alert('Updated succeeded');
} else {
alert(data); // perhaps an error message?
}
}
});
});
});
PHP
Looks like you know what you're doing here. The important thing is to output the appropriate data type.
<?php
$rxdtime=$_GET["rxdtime"];
$txid=$_GET["txid"];
$balance=$_GET["balance"];
$ref=$_GET["ref"];
header('Content-Type: text/plain; charset=utf-8');
// -------- SQL Query -------
// your logic here will vary
try {
// ...
echo 'success';
} catch(PDOException $e) {
echo $e->getMessage();
}
Instead of <a href>, use ajax to pass the values to your php and get the result back-
$.post('updateRCstatus/test.html', { 'rxdtime': <?php ecdho $time ?>, OTHER_PARAMS },
function(data) {
alert(data);
});
The following script sends data with ajax for login
I want to format the data returned by using, in essence, a session variable ($ _SESSION)
I can do it
$("#login").click(function(){
username=$("#user_name").val();
password=$("#password").val();
$.ajax({
type: "POST",
url: "inc/login.inc.php",
data: "username="+username+"&password="+password,
success: function(msg){
if(msg!='false')
{
$("#login_form").fadeOut("normal");
$("#shadow").fadeOut();
$("#profile").html("<\?php print(\"$_SESSION['name'].\" <a href='inc\/logout.inc.php' id='logout'>Logout k2<\/a>\");\?>");
//valori menù
if(tipo=='1')
{$("#admin").css('display','none')}
}
else
{
$("#add_err").html("Username o password errata");
}
},
beforeSend:function()
{
$("#add_err").html("<img hspace='84' src='img/loading.gif' alt='Loading...' width='32' height='32'>" )
}
});
return false;
});
especially this is possible, in this way would print the name of the user just logged. otherwise I would not know how to do
$("#profile").html("<\?php print(\"$_SESSION['name'].\" <a href='inc\/logout.inc.php' id='logout'>Logout k2<\/a>\");\?>");
You can't insert PHP code after the script has already been processed.
Either pull it in via ajax, or include the actual PHP output into your javascript.
ie, in page.php
<script>
var sessionName = '<?php echo $_SESSION['name']; ?>';
</script>
then when you need it later
$("#profile").html(sessionName + " Logout k2");
JavaScript is client-side, it simply can't execute your php code.
You have to return something (eg. the username) in the php file you use in your ajax request and use that in your JS.
See the jQuery ajax docs for examples.
You'll need to serve the php code:
$("#profile").load("inc/login-header.inc.php");
login-header.inc.php
<?php
print($_SESSION['name'] . " <a href='inc/logout.inc.php' id='logout'>Logout k2</a>");
?>
The easiest way to send information back from the php script to the javascript, is by using the msg variable in
success: function(msg){
If you just want to send back one string, you just echo that one string in your php file and you will have its value in msg. If there are multiple variables you want to send back, you can package the result in a json object.
So assuming that everything you want to send back is contained in the php array named $output, you do a echo json_encode($output); at the end of your php script to get the whole thing in msg.
that won't work, as the PHP code is never processed.
In login.inc.php try something like this
<?php
if (!loginOK()){
echo "{login:false}";
} else {
echo "{login:true, name:'".$_SESSION['name']."'}";
}
and then on the client
success: function(msg){
if (msg.login){
// stuff
} else {
$("#profile").html(msg.name + $('<a>').attr('href', 'logout.php').html('logout'));
}
}
I'm having a hard time figuring this one out. Seems like no matter what I try, PHP always ends up returning an empty array. Here's the code of my main file(index.php):
<script language="javascript" type="text/javascript">
$(document).ready(function(){
$(".ajaxlink").click(function() {
callServer();
return false; //Stop link from redirecting
});
});
var test = { "testName": "testValue" }
var testJSON = JSON.stringify(test);
function updatePage(data) {
document.getElementById("testDiv").innerHTML = data;
}
function callServer() {
$.ajax({
type: "POST",
url: "ajax/server.php",
data: testJSON,
success: function(data) {
updatePage(data);
},
//Upon error, output message containing a little info on what went wrong
error: function (XMLHttpRequest, textStatus, errorThrown) {
alert('An Ajax error occured\ntextStatus = ' + textStatus + '\nerrorThrown = ' + errorThrown + '\nstatus = ' + XMLHttpRequest.status);
}
});
}
</script>
<div id="testDiv">Something here</div>
Link! <br>
This basically runs the callServer() function when you click the "Link!". It then sends the test json data, that is { "testName": "testValue" } to server.php. Firebug reports that the json-data is indeed sent to the server.php.
My server.php looks like this:
<?php
print_r($_POST);
?>
This returns the following in the testDiv:
Array
(
)
The datatype in the .ajax function is not defined, so whatever output the server.php file spits out, it should be readable. All the necessary libraries(json, jquery) are included in my document as well. I'm running this on Apache 2.2 and PHP 5.3.1, but it shows the same on my webserver (which is a host for thousands of websites). The content-type used in the request-header is 'application/x-www-form-urlencoded; charset=UTF-8' so that should work correctly.
Thanks for your time.
Best regards
soren
I think you send the data in a wrong way. Either you send a string like testName=testValue or you assign the value in test directly to the data parameter of .ajax() and don't use the stringify method.
Because, if you use stringify, the actual sent data will be (I assume, I am not sure here):
'{ "testName": "testValue" }'
but this is not a valid parameter string.
It should be of form
'testName=testValue'
So use test directly, .ajax() will convert the object into an appropriate string:
function callServer() {
$.ajax({
type: "POST",
url: "ajax/server.php",
data: test,
success: function(data) {
updatePage(data);
},
//Upon error, output message containing a little info on what went wrong
error: function (XMLHttpRequest, textStatus, errorThrown) {
alert('An Ajax error occured\ntextStatus = ' + textStatus + '\nerrorThrown = ' + errorThrown + '\nstatus = ' + XMLHttpRequest.status);
}
});
}
I'm not sure your output from your PHP script is JSON formatted.
If you're using a newer version of PHP (which you are) you'll have access to the json_encode and json_decode functions. Instead of doing:
print_r($_POST);
Try:
print json_encode($_POST);
If your version of PHP doesn't have these functions you can use a library such as the Zend_Json class in the Zend Framework, in order to encode your PHP variables as JSON before outputting them.
And when it comes back, it'll be a JSON-formatted string. Setting the dataType in your jQuery.ajax call should evaluate it to a JS object. If not you would either have to call the Javascript eval function on it, or (preferably) use JSON.parse(data).
Use firefox and Live Http Headers extension.
With this you'll be able to see exactly where the problem lies,
Php or Js code.
live http headers