PHP cannot pass two parameter to another php using ajax - php

Question

I need to call php and get data from another server and I am using proxy.php to call from ajax.
proxy.php
<?
header('Content-type: application/json');
$url=$_GET['url'];
$json=file_get_contents($url);
echo $json;
?>
And my code looks
function scanFunction(){
var url="http://address/scan.php?user=user1&video=video1";
console.log(url);
url = 'proxy.php?url='+url;
$.ajax({
url: url,
type: "POST",
data: {
},
dataType: "JSON",
success: function (jsonStr) {
if(jsonStr.length>0){
var obj = jsonStr;
console.log(obj);
}
else{
console.log(" error...");
}
}
});
}
And this code works fine when I use one parameter to the url passing to proxy.php where as second argument missing
That is
echo $url; inside proxy.php print
http://address/scan.php?user=user1
event I pass two argument like,
proxy.php?url="http://address/scan.php?user=user1&video=video1"
That is second argument video missing inside proxy.php and so I am not getting expected result.

Answer 1

You may be having issues with your GET variables in the GET['url'] variable.
Try encoding your url when you send it to proxy.php to avoid such issues.
var url = encodeURIComponent("http://address/scan.php?user=user1&video=video1");
url = 'proxy.php?url='+url;
Then on the PHP side you need to decode it.
$url=$_GET['url'];
if (is_string($url)) {
$url = urldecode($url);
}

Answer 2

proxy.php cannot know which arguments are meant for it, and which are meant for scan.php. Eg, When you call url:
proxy.php?url=http://address/scan.php?user=user1&video=video1
Your proxy scripts thinks that the query parameters are:
url:"http://address/scan.php?user=user1"
video:"video1"
But your intent was for everything after url to be one parameter. A better approach is to use POST parameters instead of URL query parameters.
$.ajax({
url: url,
type: "POST",
data: {
resource_url: "http://address/scan.php?user=user1&video=video1"
},
....
});
Now, in proxy.php:
<?php
header('Content-type: application/json');
$url=$_POST['resource_url'];
$json=file_get_contents($url);
echo $json;
?>

Answer 3

Use the data: property of the ajax call to pass as much or as many parameters as you like
function scanFunction(){
$.ajax({
url: 'proxy.php',
type: 'POST',
data: {
url: 'http://address/scan.php',
user: 'user1',
video: 'video1'
},
dataType: "JSON",
success: function (jsonStr) {
if(jsonStr.length>0){
var obj = jsonStr;
console.log(obj);
} else {
console.log(" error...");
}
}
});
}
Then build whatever you want from those parameters in the php script
Oh and you used type: 'POST' in your javascript, so you should be using the $_POST array in your PHP script.
proxy.php
<?php
$url = $_POST['url'] . '?user=' . $_POST['user'] . '&video=' . $_POST['video'];
$json=file_get_contents($url);
header('Content-type: application/json');
echo $json;
?>