Get multiple filter value parameters - php

Question

I'm using this SO question to handle my filter search using checkbox.
This is the JS
$('input[type="checkbox"]').on('change', function (e) {
var data = {},
fdata = [],
loc = $('<a>', { href: window.location })[0];
$('input[type="checkbox"]').each(function (i) {
if (this.checked) {
if (!data.hasOwnProperty(this.name)) {
data[this.name] = [];
}
data[this.name].push(this.value);
}
});
// get all keys.
var keys = Object.keys(data);
var fdata = "";
// iterate over them and create the fdata
keys.forEach(function(key,i){
if (i>0) fdata += '&'; // if its not the first key add &
fdata += key+"="+data[key].join(',');
});
$.ajax({
type: "get",
url: "/ajax/get",
data: {
"_token": "{{ csrf_token() }}",
"fdata": fdata
},
success: function (response) {
$('#d2d-results').html(response);
}
});
if (history.pushState) {
history.pushState(null, null, loc.pathname + '?' + fdata);
}
});
And now I try to get the value of fdata to PHP.
On PHP I get this value of variable echo $_GET['fdata'];:
discount=Y&brand=BR0006,BR0003
What I want
$discount="Y";
$brand="BR0006,BR0003";
Is it possible to do like that?

Answer 1

To do what you want, you have to do two steps:
parse the query string into an array:
parse_str($_GET['fdata'], $result);
And then, extract the array as variables:
extract($result);
A few things to note:
Using extract is very insecure (and somewhat ugly). The user can put things like (for example) isAdmin=1 in the URL and the will affect your code. Basically, you cannot trust your variables anymore.
I would skip step 2 (the extract thingy), and use $result directly, for example echo $result['discount'].

Answer 2

it sounds like you are mixing post and get, is it something like this that you're after?
via GET:
if(isset($_GET['discount'])) {
$discount = $_GET['discount'];
} else {
$discount = '';
}
if(isset($_GET['brand'])) {
$brand = $_GET['brand'];
} else {
$brand = '';
}
POST method:
if(isset($_POST['discount'])) {
$discount = $_POST['discount'];
} else {
$discount = '';
}
if(isset($_POST['brand'])) {
$brand = $_POST['brand'];
} else {
$brand = '';
}

Answer 3

in one way , you can use explode function in php to separate your item from fdata
you can define some character in your client JS app for example ( , ) and then in explode function in php you must set separator equal comma character
explode function in PHP
explode(separator,string,limit)
in your example separator is comma and string is fdata ( limit optional
)
$fdata = $_GET['fdata'];
$arr_ = explode('&',$fdata);
and if you have some thing like this in fdata string
para1=223&para2=4353&para3=234
then $arr_ variable like this
$arr_ = [para1=223 , para2=4353 , para3=234];
and if you want separate value and key , you can do this again and use loop