PHP cURL - Sending array succeded but not entirely - php

Question

I'm using CURL to post to a script hosted on a remote server.
I'm sending a multidimensional array using this:
$urlserver = "myserver";
$arraytag = array('tags'=>$taggenerici,'tagesplosi'=>$tagesplosi,'matrice'=>$matricefin,'id' =>$identificativo);
$postfields = http_build_query($arraytag);
//open connection
$ch = curl_init();
curl_setopt($ch,CURLOPT_URL,$urlserver);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch,CURLOPT_POST,sizeof($postfields));
curl_setopt($ch, CURLOPT_POSTFIELDS,$postfields);
curl_setopt($ch, CURLOPT_RETURNTRANSFER ,1); // RETURN THE CONTENTS OF THE CALL
//execute request sending post
$result = curl_exec($ch);
echo $result;
//close connection
curl_close($ch);
The problem is about the result: infact if i try to execute my script i get a randomic result. I'd like to view an array of 20rows X 43columns but it stops at row10 and column28. But if i refresh my page after some try i get my full array.
I'd like to say that i have tried to get the array before sending it to the remote server and it works fine cos i get my array entirely without any kind of cutting.
script being called (minus unused mysql connection):
<?php
$taggenerici = $_POST['tags'];
$matrice = $_POST['matrice'];
$identificativo = $_POST['id'];
$tagesplosi = $_POST['tagesplosi'];
//Here i create the array with "a" and "?"
for($dom=0;$dom<sizeof($identificativo);$dom++) {
for ($tag=0;$tag<sizeof($taggenerici);$tag++) {
$matrice[$dom][$tag] = "a, ";
}
$tagAdd=sizeof($taggenerici)+1;
$matrice[$dom][$tagAdd] ="?";
}
//Here i set "p".
for($dom=0;$dom<sizeof($identificativo);$dom++) {
for ($tag=0;$tag<sizeof($taggenerici);$tag++) {
for ($tagarray=0;$tagarray<sizeof($tagesplosi[$dom]);$tagarray++) {
if ($taggenerici[$tag] == $tagesplosi[$dom][$tagarray]) {
$matrice[$dom][$tag] = "p, ";
}
}
}
}
//this is the $result which I call on the client. (echo $valore);
foreach ($matrice as $kappa => $vu) {
echo "<br>";
foreach ($vu as $kii => $valore)
echo $valore;
}
}