use javascript variable in php in jquery function - javascript

I want to use javascript variable in php function.. my code is as below
$(document).ready(function() {
$("#btn_url").on('click', function() {
var video_val = $("#video_url").val(); alert(video_val);
alert('<?php echo getYoutubeDurationV3("<script>document.write(video_val);</script>"); ?>');
});
});
I want to use video_val variable in php function.. how can i do that ?

You can use Ajax for this solution. When you place your PHP getYoutubeDurationV3 function in a .php file.
$(document).ready(function() {
$("#btn_url").on('click', function() {
var video_val = $("#video_url").val(); alert(video_val);
$.ajax({
url: 'yourphpscript.php',
data: {duration: video_val},
type: 'POST',
success: function(data) {
alert(data);
}
});
});
});
And in your PHP file you can get the value like this:
<?php
$duration = $_POST['video_val'];
//rest of your logic, in your case your function
//return your response back to your webpage.
return $response;
?>

yes, u can do that by ajax post method..
$(document).ready(function() {
$("#btn_url").on('click', function() {
var video_val = $("#video_url").val(); alert(video_val);
$.ajax({
url: 'ajax_file.php',
data: {duration: video_val},
type: 'POST',
success: function(data) {
alert(data);
}
});
});
});
And in ajax_file.php write below code..
<?php
$duration = $_POST['video_val'];
return $duration ;
?>

Related

Using AJAX to post data into API

I have a script that uses AJAX to comunicate with PHP based API.
First part loads trade history:
$(document).ready(function () {
var orders = $('#History ul');
var user = "<?php echo $user; ?>";
$.ajax({
type: "GET",
url: "api.php",
data: {
user: user
},
success: function (response) {
console.log(response);
var res = JSON.parse(response);
$.each(res, function (index, value) {
console.log(value);
if(value['PL']>=0){
orders.append("<li style=\"color:green;\">" + value['User'] + "</li>");
}else{orders.append("<li style=\"color:red;\">" + value['User'] + "</li>");}
});
}
});
Second part posts a trade to database:
$("#submit").click(function(){
//event.preventDefault();
var oPrice = newOrder.elements["oPrice"].value;
var cPrice = newOrder.elements["cPrice"].value;
var oType = newOrder.elements["oType"].value;;
var oSymbol = newOrder.elements["oSymbol"].value;
var oAmount = newOrder.elements["oAmount"].value;
var json ={
'user': user,
'oPrice': oPrice,
'cPrice': cPrice,
'oType': oType,
'oSymbol': oSymbol,
'oAmount': oAmount};
alert(JSON.stringify(json)); //---check zda je naplněný
$.ajax({
type: "POST",
url: "api.php",
data: json,
success: function (response) {
alert(response);
}
});
});
The problem is, that when i press the button and send json, its missing the 'user' data and looks like this:
TraderBook.php?oPrice=1&cPrice=1&oType=LONG&oSymbol=1&oAmount=1
I have no idea why does ajax exclude it. The json variable has it filled out
I think your problem might be here
$(document).ready(function () {
var user = "<?php echo $user; ?>";
var is the JS scoping declaration. So you're limiting your user value to just the anonymous function being triggered by the page DOM load completing. What you should do is try scoping it outside the function
var user; //global scope
$(document).ready(function () {
user = "<?php echo $user; ?>";
This way, when your $("#submit").click(function() fires, there's a value to feed into your script.
I was wrongchecking the problem a mistook data from a form for the json. Problem was inside the API --> There was a tabulator in a SQL command..
Thanks to everyone for suggestions.

submit form to check something with ajax and jquery

I am making a form to check a security code. In fact, I am new to ajax and jquery, so I tried what I can, but my code doesn't work. Can anybody help me?
php file :
<?php
include('/includes/db-connect.php');
if( isset($_POST["seccode"]) ){
$result=mysqli_query($con,"SELECT * FROM `certificate_acheived_tbl` WHERE `cert_check_code` = ".$seccode.")";
if( mysql_num_rows($result) == 1) {
echo "<script>alert('s')";
}
}
?>
js file:
$(function() {
$(".btn btn-success").click(function() {
var ID = $(this).attr('id');
$.ajax({
type: "POST",
url: "cert-check-ajax.php",
data: 'certcode='+ ID,
success: function() {
$('#someHiddenDiv').show();
console.log();
}
});
});
});
your code is bad... (sometimes mine too)
One first mistake : data: 'certcode='+ ID, in jQuery
and isset($_POST["seccode"]) in PHP 'certcode' != 'seccode'
so a better code.. ?
jQuery (I allways use JSON, it's more easy)
$(function () {
$(".btn btn-success").click(function() {
var
Call_Args = {
certcode: $(this).attr('id')
};
$.ajax({
url: 'cert-check-ajax.php',
type: 'POST',
data: Call_Args,
cache: false,
dataType: 'json',
success: function (data) {
console.log( data.acceptCod ); // or data['acceptCod'] if you want
$('#someHiddenDiv').show();
// ...
}
}); //$.ajax
}); // btn btn-success").click
});
PHP (with utf8 insurance, and good header / JSON encode response )
<?php
mb_internal_encoding("UTF-8");
include('/includes/db-connect.php');
$T_Repons['acceptCod'] = "bad";
if (isSet($_POST['certcode'])) {
$sql = "SELECT * FROM `certificate_acheived_tbl` ";
$sql .= "WHERE `cert_check_code` = ".$_POST['certcode'].")";
$result = mysqli_query($con, $sql);
$T_Repons['acceptCod'] = (mysql_num_rows($result) == 1) ? "ok" : "bad";
}
header('Content-type: application/json');
echo json_encode($T_Repons);
exit(0);
?>
you can use it
$(function() {
$(".btn btn-success").click(function() {
var ID = $(this).attr('id');
$.ajax({
type: "POST",
url: "cert-check-ajax.php",
data: {'seccode': ID}
}).done(function(data) {
$('#someHiddenDiv').show();
console.log(data);
});
});
});

my ajax post method works but i can not catch the value by php

post method , it can post value, my success alert is working but i can not echo in my php. i tried to send to same page and another page. Both they haven't work. Here is my ajax code :
<script>$( "#il" ).change(function() {
var aa = $("#il").val();
$.ajax({
url: 'never.php',
type: 'POST',
data: { aa1 : 'mynameis'},
success: function () {
alert($("#il").val());
},
});
});
</script>
and here is my php code to catch :
<?php
$aa = $_POST['aa1'];
if($aa != ""){
echo $aa;
} else { echo "puuf";}
?>
In order to catch the data returned from the PHP echo you need to add a parameter to the success method for javascript to place the value in for you to then make use of
<script>
$( "#il" ).change(function() {
var aa = $("#il").val();
$.ajax({
url: 'never.php',
type: 'POST',
data: { aa1 : 'mynameis'},
success: function (data) {
// - - - - - - - - ^^^^
alert($("#il").val(data));
// - - - - - - - - - ^^^^
}
});
});
</script>
You'll have to define a data parameter on the success callback, because the echoed data have to be passed as argument to it. So,
The client script:
<script type="text/javascript">
$("#il").change(function () {
var aa = $("#il").val();
$.ajax({
url: 'never.php',
type: 'POST',
data: {
aa1: 'mynameis'
},
success: function (data) {
alert(data);
},
});
});
</script>
And the PHP:
<?php
$aa = $_POST['aa1'];
if (isset($aa) && !empty($aa)) {
echo $aa;
} else {
echo "puuf";
}
?>

CodeIgniter - getting data from database automatically using setInterval

In codeigniter, I want to display the change in the database automatically without reloading the page so i use ajax to run a controller function in my view. I'm using setInterval to run the function over and over again until the controller function listen_auth returns 1 and the view displays 1.
VIEW:
<h4 class="qr-title" id="status"></h4>
<script>
var username = <?php echo(json_encode($username)); ?>;
function checkAuthStatus() {
setInterval(getStatus, 1000);
}
function getStatus() {
var isAuth = <?php echo(json_encode($isAuth)); ?>;
$.ajax({
url: '<?php echo base_url('auth/listen_auth'); ?>',
type: 'post',
data: {username:username},
success: function(data){
console.log(data);
}
});
document.getElementById("status").innerHTML = isAuth;
}
</script>
here's the listen_auth() function in my CONTROLLER:
public function listen_auth(){
$username = $this->input->post('username');
$isApproved = $this->adminmodel->get_auth($username);
if($isApproved == 1){
return 1;
} else{
return 0;
}
}
The problem is that isAuth variable will only change once the page has been reloaded... Am I doing something wrong? Or is there any better way to do this?
The function from server 'listen_auth()' should print text not return.
public function listen_auth(){
$username = $this->input->post('username');
$isApproved = $this->adminmodel->get_auth($username);
if($isApproved == 1){
echo 1;
} else{
echo 0;
}
}
And then get the answer from server in AJAX request:
<script>
var username = <?php echo(json_encode($username)); ?>;
function checkAuthStatus() {
setInterval(getStatus, 1000);
}
function getStatus() {
var isAuth = <?php echo(json_encode($isAuth)); ?>;
$.ajax({
url: '<?php echo base_url('auth/listen_auth'); ?>',
type: 'post',
data: {username:username},
success: function(data){
document.getElementById("status").innerHTML = data;
}
});
}
</script>
You need to declare $isAuth and assign its value in ajax request, because php variable will not change its value without server request.

Pass Array FROM Jquery with JSON to PHP

hey guys i read some of the other posts and tried alot but its still not working for me.
when i alert the array i get all the results on the first site but after sending the data to php i just get an empty result. any ideas?
$(document).ready(function() {
$('#Btn').click(function() {
var cats = [];
$('#cats input:checked').each(function() {
cats.push(this.value);
});
var st = JSON.stringify(cats);
$.post('foo.php',{data:st},function(data){cats : cats});
window.location = "foo.php";
});
});
Php
$data = json_decode($_POST['data']);
THANK YOUU
my array looks something like this when i alert it house/flat,garden/nature,sports/hobbies
this are a couple of results the user might choose (from checkboxes).
but when i post it to php i get nothing. when i use request marker (chrome extension) it shows me something likethat Raw data cats=%5B%22house+themes%22%2C%22flat+items%22%5D
i also tried this way-- still no results
$(document).ready(function() {
$('#Btn').click(function() {
var cats = [];
$('#cats input:checked').each(function() {
cats.push(this.value);
alert(cats);
$.ajax({
type: 'POST',
url: "foo.php",
data: {cats: JSON.stringify(cats)},
success: function(data){
alert(data);
}
});
});
window.location = "foo.php";
});
});
php:
$json = $_POST['cats'];
$json_string = stripslashes($json);
$data = json_decode($json_string, true);
echo "<pre>";
print_r($data);
its drives me crazy
Take this script: https://github.com/douglascrockford/JSON-js/blob/master/json2.js
And call:
var myJsonString = JSON.stringify(yourArray);
so now your code is
$(document).ready(function() {
$('#Btn').click(function() {
var cats = [];
$('#cats input:checked').each(function() {
cats.push(this.value);
});
var st = JSON.stringify(cats);
$.post('foo.php',{data:st},function(data){cats : cats});
// window.location = "foo.php"; // comment this by this page redirect to this foo.php
});
});
//and if uou want toredirect then use below code
-------------------------------------------------
$.post('foo.php',{data:st},function(data){
window.location = "foo.php";
});
---------------------------------------------------
Php
$data = json_decode($_POST['data']);
var ItemGroupMappingData = []
Or
var ItemGroupMappingData =
{
"id" : 1,
"name" : "harsh jhaveri",
"email" : "test#test.com"
}
$.ajax({
url: 'url link',
type: 'POST',
dataType: "json",
data: ItemGroupMappingData,
success: function (e) {
// When server send response then it will be comes in as object in e. you can find data //with e.field name or table name
},
error: function (response) {
//alert(' error come here ' + response);
ExceptionHandler(response);
}
});
Try this :-
$data = json_decode($_POST['data'], TRUE);
I think you should move the "window.location = " to the post callback, which means it should wait till the post finshed and then redirect the page.
$.post('foo.php', {
data : st
}, function(data) {
window.location = "foo.php";
});

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