I want to send an array to PHP (POST method) using jQuery.
This is my code to send a POST request:
$.post("insert.php", {
// Arrays
customerID: customer,
actionID: action
})
This is my PHP code to read the POST data:
$variable = $_POST['customerID']; // I know this is vulnerable to SQLi
If I try to read the array passed with $.post, I only get the first element.
If I inspect the POST data with Fiddler, I see that the web server answers with "500 status code".
How can I get the complete array in PHP?
Thanks for your help.
To send data from JS to PHP you can use $.ajax :
1/ Use "POST" as type, dataType is what kind of data you want to receive as php response, the url is your php file and in data just send what you want.
JS:
var array = {
'customerID': customer,
'actionID' : action
};
$.ajax({
type: "POST",
dataType: "json",
url: "insert.php",
data:
{
"data" : array
},
success: function (response) {
// Do something if it works
},
error: function(x,e,t){
// Do something if it doesn't works
}
});
PHP:
<?php
$result['message'] = "";
$result['type'] = "";
$array = $_POST['data']; // your array
// Now you can use your array in php, for example : $array['customerID'] is equal to 'customer';
// now do what you want with your array and send back some JSON data in your JS if all is ok, for example :
$result['message'] = "All is ok !";
$result['type'] = "success";
echo json_encode($result);
Is it what you are looking for?
Related
I would like to use an autocompletion in my application. I'm trying to use the jquery UI completion but nothing happens. I made an ajax to get all columns with a specific variable written by the user. The query is working, I have my array with all my columns back from the server. With this query reponse, I tried to do the jquery autocompletion in the success ajax but as I said nothing is happening.
Do you have an idea?
function autoCompleteRegate(){
$("#code_regate").keyup(function() {
// AJAX de l'auto-complete
var source = '/gestion/gestDepot/ajaxautocompleteregate';
var codeRegate = $("#code_regate").val();
$.ajax({
type : "POST",
url : source,
async : false,
dataType : 'json',
data : {
'codeRegate' : codeRegate
},
success : function(response) {
var availableTags = response;
$("#code_regate").autocomplete({
source: availableTags
});
}
});
});
public function ajaxautocompleteregateAction()
{
$this->_helper->layout->disableLayout();
$this->_helper->viewRenderer->setNoRender();
$params = $this->_getAllParams();
$codeRegate = $params['codeRegate'];
$oDepotService = new Services_Depot();
$response = $oDepotService->searchCodeRegate($codeRegate);
echo json_encode($response);
}
Network query - form
Exemple of nothing happening
The answer from the server
You have to directly pass the cd_regate array instead of a multidimensional array. One workaround is you could process the json output on the backend side :
public function ajaxautocompleteregateAction()
{
$this->_helper->layout->disableLayout();
$this->_helper->viewRenderer->setNoRender();
$params = $this->_getAllParams();
$codeRegate = $params['codeRegate'];
$oDepotService = new Services_Depot();
$response = $oDepotService->searchCodeRegate($codeRegate);
$json = [];
foreach ($response as $key => $value) {
array_push($json, $value->cd_regate); // the output will be "[774970, 774690, 774700,... ]"
}
echo json_encode($json);
}
I would suggest the following for your JavaScript:
$("#code_regate").autocomplete({
source: function(request, response){
$.ajax({
type : "POST",
url : '/gestion/gestDepot/ajaxautocompleteregate',
async : false,
dataType : 'json',
data : {
'codeRegate' : request.term
},
success : function(data) {
response(data);
}
});
}
});
This uses a function as a Source. From the API:
Function: The third variation, a callback, provides the most flexibility and can be used to connect any data source to Autocomplete, including JSONP. The callback gets two arguments:
A request object, with a single term property, which refers to the value currently in the text input. For example, if the user enters "new yo" in a city field, the Autocomplete term will equal "new yo".
A response callback, which expects a single argument: the data to suggest to the user. This data should be filtered based on the provided term, and can be in any of the formats described above for simple local data. It's important when providing a custom source callback to handle errors during the request. You must always call the response callback even if you encounter an error. This ensures that the widget always has the correct state.
When filtering data locally, you can make use of the built-in $.ui.autocomplete.escapeRegex function. It'll take a single string argument and escape all regex characters, making the result safe to pass to new RegExp().
When 1 or more letters are entered into the text field, this will be passed to the function under request.term and you can POST that to your script via AJAX. When you get the result data, it must be in an Array or an Object with the right format.
I have a form which I would like to submit via Ajax, however, part of it contains an array. I am having difficulty passing this array via Ajax. An example of my Ajax is below, where I would usually pass the form entry data via how it is below after data (one: $('#one').val()) where I would have one row of this for each field.
Now I have a new set of fields, where the information needs to be passed through as an array. I have tried using serialize and formData -- var fd = new FormData("#form") -- and so far either just this array has been passed through, or nothing from the form is passed through, or just the array is not passed through.
Can anyone please point me in the right direction?
$("#form").submit(
function() {
if (confirm('Are you sure you want to edit this?')) {
$("#formMessages").removeClass().addClass('alert alert-info').html(
'<img src="images/loading.gif" /> Validating....').fadeIn(500);
$.ajax({
url: $("#form").attr('action'),
dataType: 'json',
type: 'POST',
data: {
one: $('#one').val(),
two: $('#two').val()
},
success: function(data){
//success stuff would be here
}
});
}
return false;
});
Thanks.
You could try using :
var dataSend = {};
dataSend['one'] = $('#one').val();
dataSend['two'] = $('#two').val();
dataSend['three'] = $('#three').val();
then in the ajax
data: {dataSend:dataSend}
You can gather data in php with json:
$json = json_encode($_POST['dataSend']);
$json = json_decode($json);
print_r($json);
To see output.
Edit:
You can gather data in php like below:
$one = $json->{'one'};
$two = $json->{'two'};
Have you tried this:
Written in JavaScript:
your_array = JSON.stringify(your_array);
And in PHP:
$array = json_encode($_POST['array']);
I have a function which saves an array each time the button is clicked to localStorage.The button will be clicked multiple times and I need to put this Array list into PHP somehow which is on another page from this file.
Thanks
a.js
(this function listens onLoad of the page)
function doFirst(){
var button = document.getElementById("button");
button.addEventListener("click", save, false);
var buttons = document.getElementById("clear");
buttons.addEventListener("click", clear, false);
var buttonss = document.getElementById("submittodb");
buttonss.addEventListener("click", toPHP, false);
$.ajax({
method: 'post',
dataType: 'json',
url: 'edit.php',
data: { items: oldItems }, //NOTE THIS LINE, it's QUITE important
success: function() {//some code to handle successful upload, if needed
}
});
}
function save(){
var oldItems = JSON.parse(localStorage.getItem('itemsArray')) || [];
var newItem = {
'num': document.getElementById("num").value,
'methv': document.getElementById("methv").value,
'q1': document.getElementById("q1").value,
'q2':document.getElementById("q2").value,
'q3':document.getElementById("q3").value,
'q4':document.getElementById("q4").value,
'comm':document.getElementById("comm").value,
};
oldItems.push(newItem);
localStorage.setItem('itemsArray', JSON.stringify(oldItems));}
edit.php
$parsed_array = json_decode($_POST['items']);
and i get the error: Notice: Undefined index: items in /home/project/edit.php on line 9
In order to pass this array to PHP you need to:
JSon-encode it
Make an AJAX or POST request to PHP
Parse the passed array into PHP array
If you're using jQuery (if you're not you should start - it is really handy tool) steps (1) and (2) is as simple as
$.ajax({
method: 'post',
dataType: 'json',
url: 'the URL of PHP page that will handle the request',
data: { items: oldItems }, //NOTE THIS LINE, it's QUITE important
success: function() {//some code to handle successful upload, if needed
}
});
In PHP you can parse the passed array with just
$parsed_array = json_decode($_POST['items']);
There is a direct connection between { items: oldItems } and $_POST['items']. The name of variable you give to the parameter in javascript call will be the name of key in $_POST array where it ends up. So if you just use data: oldItems in javascript you'll have all your entities scattered around the $_POST array.
More on $.ajax, and json_decode for reference.
You can create an AJAX function (use jQuery) and send the JSON data to the server and then manage it using a PHP function/method.
Basically, you need to send the data from the client (browser) back to the server where the database hosted.
Call JSON.stringify(oldItems); to create the json string
Do a Do a POST request using AJAX.
Probably the simplest way is using jQuery:
$.post('http://server.com/url.php', { items: JSON.stringify(oldItems) }, function(response) {
// it worked.
});
I have array in json, but I want to print it in php. I get in post this :
[{"cartData":{"id":"dragged_567737","left":"255px","top":"71px"}},{"cartData":{"id":"dragged_757836","left":"43px","top":"73px"}}]
but when I use print_r($_POST) in my php file, it print me the empty array.
there is my js code:
jQuery('#save_project_data').click( function() {
var array=[];
var numItems = $('.icart').length;
$(".icart").each(function(index) {
var cart_id = $(this).attr("id");
var cart_left = $(this).css("left");
var cart_top = $(this).css("top");
var cartData = {
"id" : cart_id,
"left" : cart_left,
"top" : cart_top
};
queryStr = { "cartData" : cartData };
array.push(queryStr);
});
var postData = JSON.stringify(array);
$.ajax({
url : "modules/cart_projects/saveData.php",
type : "POST",
dataType: 'json',
contentType: 'application/json; charset=utf-8',
data : postData,//{ 'data': '{"name":"chris"}' }
traditional: true,
success: function(){
alert("OK");
}
});
return false;
});
PHP has native support for decoding JSON with json_decode();
$data = json_decode($_POST['myJson']);
print_r($data);
The PHP $_POST array is interpreted from key value pairs, so you need to change your ajax call like below, because your code is sending the post data with no key.
data : { myJson : postData },//{ 'data': '{"name":"chris"}' }
If you change the data structure like above, you need to also remove your application/json; charset=utf-8 content type.
From the Manual:
Takes a JSON encoded string and converts it into a PHP variable.
If you're sending raw JSON-strings to PHP, $_POST will not be populated (as it needs a standard urlencoded string as submitted by POST requests to decode). You can solve this by either using postData as an object: {'json': json}, so that you get the value in $_POST['json'], or by reading the raw response:
$json_string = file_get_contents('php://input');
$struct = json_decode($json_string, true);
Try to use json_decode() function.
According to jQuery.ajax() documentation:
Data to be sent to the server. It is converted to a query string, if not already a string. It's appended to the url for GET-requests. See processData option to prevent this automatic processing. Object must be Key/Value pairs. If value is an Array, jQuery serializes multiple values with same key based on the value of the traditional setting (described below).
To be safe, you might be better off using the jQuery.post() method.
Finally, I suggest to give the data property an object. That way you can set an identifier for your post data.
Javascript
{
url: 'modules/cart_projects/saveData.php',
data: {
mydata: postData
}
}
PHP
$_POST['mydata'];
If you need to decode the JSON:
json_decode($_POST['mydata']);
I need to send some data to an external php page and that page has to send the required data back to jQuery. My question is how can I send the data from the external page back to jQuery on the page that send it.
This is the jQuery code that sends the data to the external page:
function LoadImageData(url)
{
$.ajax({
url: 'get_image_data.php',
dataType: 'json',
data: {'url': url },
success: SetTag()
});
}
This is the PHP code htat receives the data and is required to send some data back:
<?php
require_once('FaceRestClient.php');
$apiKey = '**********************';
$apiSecret = '**********************';
$api = new FaceRestClient($apiKey, $apiSecret);
$active_url = $_POST['url'];
$photos = $api->faces_detect($active_url);
return $photos;
?>
So my problem is, how can I send the data backto jQuery. Just a simple return does not seem to work.
Thanks in Advance,
Mark
You need to echo the resulting JSON:
echo $photos;
If $photos is not already JSON, use json_encode:
echo json_encode( $photos);
One would think the REST API would give you JSON, but you need to check if it's valid JSON (JSONP is not valid here) ?
You could just drop the dataType in your Ajax function and let jQuery figure it out, that way atleast you'll get something back if it's not valid JSON.
Try this:
$.ajax({
url: 'get_image_data.php',
type: 'POST',
data: {'url': url }
}).done(function(data) {
console.log(data);
}).fail(function() {
console.log('Your ajax just failed');
});
Open the console, and see what is printed
At the end of a PHP function I tend to do :
exit(json_encode($someData));
To return the data as JSON, but anything that prints the data is ok.
try this
echo json_encode( $photos);
you need to echo
echo $photos;
and as metntoned by #nickb if $photo is not already a json then convert it into json first and then echo.
echo json_encode($photos)
in jQuery if you want to fetch the data
onSuccess: function(data, status) {
//var data contains the returned json.
}