Transfer array from one page to another using CURL - php

Question

Im trying to transfer an array of data between two files.
The sender.php code (the file sending the array using POST method)
$url = 'http://localhost/receiver.php';
$myvars = array("one","two","three")
$post_elements = array('myvars'=>$myvars);
$ch = curl_init( $url );
curl_setopt( $ch, CURLOPT_POST, 1);
curl_setopt( $ch, CURLOPT_POSTFIELDS, $post_elements);
curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt( $ch, CURLOPT_HEADER, 0);
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, 1);
$response = curl_exec( $ch );
echo "$response";
The receiver.php code (The file receiving the array from sender.php file and then take each element of the array and echo it and also put it in a document saved.txt.
echo $_POST($myvars); // To test the output of the received data.
foreach($myvars as $item) {
if (!empty($item)) {
echo $item."<br>";
$myfile = file_put_contents('Saved.txt', (" Name: ". ($_POST["$item"])) . PHP_EOL , FILE_APPEND);
}
}
The array isn't being transferred to the receiver.php or I am not catching it. In the document output I have only in the place of the variable $item instead of each element of the array.
Edit:
Added the following code in the receiving file in order to get the array elements from inside but all I get is array printed out:
foreach( $_POST as $stuff ) {
if( is_array( $stuff ) ) {
foreach( $stuff as $thing ) {
echo $thing;
}
} else {
echo $stuff;
}
}
By adding on the receiving file the following:
echo "<pre>";
print_r($_POST);
echo "</pre>";
I get the following:
Array
(
[myvars] => Array
)

Answer 1

OK, the bottom line of the discussion in the comments above leads to this result:
The sending part:
<?php
$url = 'http://localhost/out.php';
$myvars = array("one","two","three");
$post_elements = array('myvars'=>$myvars);
$ch = curl_init( $url );
curl_setopt( $ch, CURLOPT_POST, 1);
curl_setopt( $ch, CURLOPT_POSTFIELDS, http_build_query($post_elements));
curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt( $ch, CURLOPT_HEADER, 0);
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, 1);
$response = curl_exec( $ch );
print_r($response);
The receiving part:
<?php
print_r($_POST);
The output on the sending side is:
Array ( [myvars] => Array ( [0] => one [1] => two [2] => three ) )
which basically says that you can simply use $_POST['myvars'] on the receiving side which will exactly hold the scalar array you want to transfer.

Answer 2

try to serialize the array because it always helps me :
$url = 'http://localhost/receiver.php';
$myvars = array("one","two","three");
$myvars_post=join(" ",$myvars);
$ch = curl_init( $url );
curl_setopt( $ch, CURLOPT_POST, 1);
curl_setopt( $ch, CURLOPT_POSTFIELDS, "array=".urldecode($myvars_post));
curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt( $ch, CURLOPT_HEADER, 0);
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, 1);
$response = curl_exec( $ch );
echo "$response";
and in the receiver.php use :
print_r($_POST);