I want to pass variable rating_index to the PHP code and send to database. Rating_index is set I'll not pass the code here because it is long, but right before AJAX i console.log(rating_index) and it has value(int). Add-review is a button that after click should send variable. In js script I am using AJAX :
$('#add-review').click(function(){
$.ajax({
url:"rating-data.php",
method:"POST",
data: {
rating_index: rating_index
},
success:function(data)
{
console.log(data);
}
})
}
in my php file rating-data.php:
<?php
include 'connection.php';
echo "work";
echo $_POST["rating_index"];
?>
I got a console.log ('work') from PHP file and this error:
Notice: Undefined index: rating_index in /Applications/XAMPP/xamppfiles/htdocs/bookwarm-app/rating-data.php on line 4
So it is getting my to php page but the variable are not passing correctly.
I was trying everything and I have no idea what is wrong and why this variable is undefined in php file. Thanks for any clue
This is the problem in your code, sir
$user_name = $_GET["user_name"];
$user_rating = $_GET["rating_index"];
$user_review = $_GET["user_review"];
you're doing a $_POST request from Ajax and in php file you're getting values from $_GET.....?
Related
I have an HTML input with a function and parmeter set to it like so
<input onclick='myFunc($count)' type='button' value='ClickMe'>;
I also have script references to JQuery and my script file
<script src="jquery.js"></script>
<script src="myscript.js"></script>
Inside my myscript.js file I have the contents as such
function myFunc(x) {
alert(x);
$(document).ready(function() {
$.ajax({
url: "myphp.php",
method: "post",
data: { param1: "x" },
dataType: "text",
success: function(strMessage) {
}
})
})
}
Here is my myphp.php file
<?php
$param1 = $_GET['param1'];
echo $param1;
?>
As you can see in the javascript file, I have alert(x); to test that the function is grabbing the $count variable and so far that is working (the correct value appears in the alert box). However, I want to pass that x parameter to the PHP script but my PHP script won't echo anything, I assume the line where I have param1 is wrong. Any tips?
In your AJAX call you are using a POST method, so in order to catch the variable in PHP you need to access it from $_POST:
<?php
$param1 = $_POST['param1'];
echo $param1;
?>
You're making the XHR with POST method
method: "post",
and youre looking for it in the GET array
$_GET['param1'];
Change either to post or get (keeping in mind your scenario) and you should be good imo.
read more here to know about the different methods of sending http requests: https://www.guru99.com/php-forms-handling.html
You are using post method in AJAX but trying to grab the value in $_GET which is wrong.
In your PHP code, just replace $_GET['param1'] with $_POST['param1'] and it works.
or If you like to use $_GET in your PHP code then change the method in AJAX or use $.get. Examples can be found on W3School.
https://www.w3schools.com/jquery/jquery_ajax_get_post.asp
So my goal is to use PHP to get data from a PostGreSQL database. I want to use this data in a separate javascript file so I can display it on the screen a certain way that I have my website configured. All the tutorials that I have seen online just puts a script tag inside the PHP file but I cannot do that because my website display javascript code is in the separate file. I just need the numbers to be in the javascript file that I got from the PHP file that got its data from the PostGreSQL database. How can I do this?
I just need help with the means to get to the ends because I have researched on my own but it is always not exactly what I want.
PHP:
<?php
$myPDO = new PDO('pgsql:host=myHost; dbname=myDBName', 'myUsername', 'myPassword');
?>
$result = $myPDO->query("SELECT * FROM table WHERE id = 'someID'");
Now I want to use this row's values in another javascript file. How can I do this?
You could use Ajax for this.
You could so something like this in your JS file:
$.ajax({
type: "GET",
url: 'FILENAME.php',
success: function(data){
alert(data);
}
});
and then in your FILENAME.PHP just return the values.
Your JS should then pull through whatever has been returned, in this case, your database query.
Your JS file needs to request the data from your PHP controller, via an AJAX request. You can then manipulate the returned data object whichever way you like.
We have mainly two methods to pass php value to javascript variable
Simple variable method at the time of first page load
<script>
var js_variable = <?php echo $data_php_variable; ?> ;
//this is working only at the first time of the page load
//you can also parse the data to any format
</script>
Use AJAX call to trigger a PHP request and manipulate return PHP value in JS
$.ajax({
type: "GET", //get or post method
url: 'FILENAME.php', //php request url
data :{}, //optional ,you can send data with request
success: function(res){
// this 'res' variable is the php return data in the form of js data
console.log(res);
}
});
ajax method is more dynamic ,it can use any time request handling
use the javascript ajax to call a php api
pass your data at php in your view file , use something like:
var phpData = JSON.parse("<?php echo json_encode($data)); ?>");
While looking at tons of examples of how to get a PHP variable sent to a JavaScript file, I still haven't had success getting it.
My PHP file is:
$title = $json["title"];
echo json_encode($title);
And my JavaScript file app.js is:
$.ajax({
url : 'index.php',
type : 'GET',
data : film,
dataType : 'json',
success : function (data) {
alert(data.title);
console.log(data.title);
},
})
I would like to know the right code to get the PHP $title variable to the ajax call in app.js.
Thanks
For this example there are two files. One has the JQuery ajax method. The other file is a PHP script that returns the requested information.
show_title.html
<!-- JQuery library already loaded -->
<script>
$.ajax({
url : 'get_title.php', // requesting a PHP script
dataType : 'json',
success : function (data) { // data contains the PHP script output
alert(data.title);
console.log(data.title);
},
})
</script>
get_title.php
<?php
$json["title"] = 'a title';
echo json_encode($json);
?>
If you'd want a .title property on the response, then you should create an array then encode that instead. You got the other way around. Something like this:
PHP
<?php
$title = 'Yahoo!';
$json['title'] = $title;
echo json_encode($json);
I have script like this
function getval(sel) {
var id= sel.value;
$.ajax({
type:"POST",
url:"./tab.php",
data:{id:id,task:'search'},
success: function(response){
//(I don't know what i should write for pass to php code)
}
});
}
I don't know how I can pass data response to php code ?
For Example: if I alert response, it's show 123 .so I want pass value 123 to a variable in php
$id = 123
response is the result passed BY php, not TO php. What's passed to php is the id and the task.
In your tab.php, you can access these two values :
<?php
$id = $_POST['id'];
$task = $_POST['task'];
//do anything you want with it...
?>
This is not the right workflow. PHP executes on runtime, so every time the page has finished loading you can't really put variables back into PHP (unless you reload the page). This is where AJAX comes in, so you can call PHP scripts from JavaScript / jQuery and don't have to reload the page every time.
The right thing to do is to either store the variable you have generated in the tab.php script in a database, $_SESSION, $_COOKIE or something similar like so:
//put this at the top of all your php scripts you want to use the variable in
session_start();
//now store the variable you wanted to pass (in tab.php)
$_SESSION['returnValue'] = $myValue;
Now if you want to use the variable in other pages just echo it like so (remember to add session_start() at the top of the PHP script.
echo $_SESSION['returnValue'];
First of all, start by reading this
To answer your question,
function getval(sel) {
var id= sel.value;
$.ajax({
type:"POST",
url:"./tab.php",
data:{id:id,task:'search'},
success: function(response){
//(I don't know what i should write for pass to php code)
}
});
}
The result from id and task are sent via $_POST (type:"POST") to the page tab.php (url:"./tab.php"). If you want to do that on a different page, just change the url in your ajax call: url:"./any_other_page.php" and the posted values will be sent there
Finally, read THIS post as well. It is greatly written and very well explained.
Hope it helps!
Keep on coding!
Ares.
I want to use jquery ajax to change the content of my div elemnt by requiring different php files.
here is the ajax code :
$.ajax({
url:"/project/Functions/project_functions.php",
type:"POST",
data:{
functions:num
},
success:function(result){
$("#right_bot").html(result);
}
});
the project_functions.php would be something like :
$result = '<?php require "Panels/Project/Main/main.php" ?>';
echo $result;
I can see the value being outputted , but the html comment out the php part
<!--?php require "Panels/Project/Main/main.php" ?-->
It just comments out the php. Is there a way i load different php files into my div ?
In the main.php file , It has php code , html code , and some style tags. Can I use ajax to load all this into the div element ? or I have to echo all my html code ?
You can't do this like that. What you want is that all PHP is excecuted on the server and only the result has to be returned.
You can't send php-code back to javascript and try to run it there, PHP is a serverside language, it will only work on the server. Javascript is clientside, it will only run in the browser.
If you where to send <?php echo 123; ?> back to Javascript, you'll get exactly that as result, not 123.
The solution in your case is to make project_functions.php really require it. This will include the main.php, all it's functions and output.
require "Panels/Project/Main/main.php";
Some suggested reading:
http://www.codeconquest.com/website/client-side-vs-server-side/
A trick which might help you: Paste the link to your urlbar, and add the variables to it. The result you get in your screen is what Javascript will output. Note: This only works for method=get, not post.
In this case browse to /project/Functions/project_functions.php and do the simple require per my code above. That output will be send to Javascript.
Send a parameter in the ajax request 8for example type):
$.ajax({
url:"/project/Functions/project_functions.php",
type:"POST",
data:{
functions:num, type: "main"
},
success:function(result){
$("#right_bot").html(result);
}
});
And then in php-file get the type variable:
if($type == "main") {
require "Panels/Project/Main/main.php"
}
else {
require "Panels/Project/Main/sthelse.php"
}
You should also have some sort of same function name or something to output the results of the file;
<?php
function printResult() { }
echo printResult();
Try:
$result = file_get_contents('Panels/Project/Main/main.php');