PHP Curl failed to post data - php

Question

I am coding an aubook appointment script using PHP. There is a calendar with available dates to book.
I successfully do logging, I successfully get random dates, I successfully get available dates parameters, then finally I fail to post data and book the appointment.
After I successfully book with this simple script, I have to make a condition - if there is an avaliable dates try to book else continue to refresh
<?php
set_time_limit(0);// to infinity for
$ch = curl_init();
$headers[] = "Accept: */*";
$headers[] = "Connection: Keep-Alive";
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_URL, 'https://example.com/login/login.php');
curl_setopt($ch, CURLOPT_COOKIEFILE, 'cookie.txt');
curl_setopt($ch, CURLOPT_COOKIEJAR, 'cookie.txt');
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
$co = curl_exec($ch);
$doc = new DOMDocument();
libxml_use_internal_errors(true);
$doc->loadHTML($co);
# Parse the HTML
# The # before the method call suppresses any warnings that
# loadHTML might throw because of invalid HTML in the page.
$xpath = new DOMXPath($doc);
$val1 = $xpath->query('//input[#name="_sid"]/#value')->item(0)->nodeValue;
echo $val1;
echo '<br/>';
$field['process'] = 'login';
$field['_sid'] = $val1;
$field['email'] = 'myemail#example.com';
$field['pwd'] = '123456';
$datafield = http_build_query($field);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_COOKIEFILE, 'cookie.txt');
curl_setopt($ch, CURLOPT_COOKIEJAR, 'cookie.txt');
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $datafield);
curl_setopt($ch, CURLOPT_VERBOSE, true);
curl_exec($ch);
curl_setopt($ch, CURLOPT_URL, 'https://example.com/login/myapp.php?fg_id=5568094');
$cur = curl_exec($ch);
$do = new DOMDocument(); // New dom Doc to Get URL from calender of avaliable dates
libxml_use_internal_errors(true);
$do->loadHTML($cur);
# Parse the HTML
# The # before the method call suppresses any warnings that
# loadHTML might throw because of invalid HTML in the page.
$xpath = new DOMXPath($do);
$onClickAttrNodeList = $xpath->query('//a[#class="dispo"]/#onclick'); //array contains URL
$array = array(); // CONVERT NODE LIST OBJECT TO ARRAY
foreach($onClickAttrNodeList as $node){
$array[] = $node;
}
$x=array();
foreach($array as $node) {
for($i = 0; $i < 10; ++$i) {
$x[] = $node->nodeValue; //PARSE ALL LINK AS TABLE
}
}
$randlink = array_rand($x, 10); //get gandom link from calender of avaliable dates
$link = $x[$randlink[0]];
echo '<br/>';
preg_match_all('#\bhttps?://[^,\s()<>]+(?:\([\w\d]+\)|([^,[:punct:]\s]|/))#', $link, $match); //Get URL from the last array
echo "<pre>";
$url = $match[0];
print_r($url[0]);
echo'<br/>';
parse_str( parse_url( $url[0], PHP_URL_QUERY), $arrayurl ); // GET parametres from the URL of avaliable dates to book
var_dump($arrayurl);
/* in this part of code
i am trying to post
parametres to book
an appottment i failed on this step */
$fieldbook['timestamp'] = $arrayurl[0];
$fieldbook['skey'] = $arrayurl[1];
$fieldbook['process'] = $arrayurl[2];
$fieldbook['what'] = $arrayurl[3];
$fieldbook['fg_id'] = $arrayurl[4];
$fieldbook['result'] = $arrayurl[5];
$fieldbook['issuer_view'] = $arrayurl[6];
$datafieldbook = http_build_query($fieldbook);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_URL, 'https://example.com/login/action.php');
curl_setopt($ch, CURLOPT_COOKIEFILE, 'cookie.txt');
curl_setopt($ch, CURLOPT_COOKIEJAR, 'cookie.txt');
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $datafieldbook);
curl_setopt($ch, CURLOPT_VERBOSE, true);
curl_exec($ch);
curl_setopt($ch, CURLOPT_URL, 'https://example.com/login/myapp.php?fg_id=5568094');
$book = curl_exec($ch);
echo'<br/>';
echo $book;
curl_close($ch);
?>
Thank you .

Answer 1

Problem solved , i have just Add user agent and some headers .
Thank you guys :-).