<?php
$recordId = 1020725; // the SalesOrder ID

$module = 'SalesOrder';
$loginUrl = "https://sophal.net/sophalcrm/index.php?module=Users&action=Login";
$exportUrl = "https://sophal.net/sophalcrm/index.php?module=SalesOrder&action=ExportPDF&record=$recordId";

// 1) Login
$post = http_build_query([
    'username' => 'admin',
    'password' => 'Sophal@Crm@Sophal',
]);

$contextLogin = stream_context_create([
    'http' => [
        'method'  => 'POST',
        'header'  => "Content-Type: application/x-www-form-urlencoded\r\n",
        'content' => $post,
    ]
]);

file_get_contents($loginUrl, false, $contextLogin);

// Extract session cookie
$cookies = [];
foreach ($http_response_header as $hdr) {
    if (stripos($hdr, 'Set-Cookie:') === 0) {
        $cookies[] = trim(substr($hdr, 11), ';');
    }
}
$cookieHeader = 'Cookie: ' . implode('; ', $cookies);

// 2) Get PDF
$contextPDF = stream_context_create([
    'http' => [
        'method' => 'GET',
        'header' => $cookieHeader
    ]
]);

$pdfContent = file_get_contents($exportUrl, false, $contextPDF);

// 3) Validate
if (strpos($pdfContent, '%PDF') !== 0) {
    error_log("ExportPDF returned invalid PDF for record $recordId");
    return;
}

// 4) Save
$filePath = $_SERVER['DOCUMENT_ROOT']."/sophalcrm/storage/SalesOrder_$recordId.pdf";
file_put_contents($filePath, $pdfContent);