Of course it is, without going much into unnecessary things and based on your limited info:
<?php
$c = curl_init('http://*****.com/index.php/home/search/keyword/c815f2fec5?value=keyworkd');
curl_setopt($c, CURLOPT_USERAGENT, "User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:29.0) Gecko/20100101 Firefox/29.0");
curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($c, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($c, CURLOPT_COOKIE,
'_ga=GA1.2.373422434.1399222050; PHPSESSID=l8sf036kjaijt6cjvcqnu992l4');
curl_setopt($c, CURLOPT_REFERER, 'http://****.com/');
$z = curl_getinfo($c);
$s = curl_exec($c);
curl_close($c);
?>
Edit: Damn though it is POST not COOKIE, repaired. Edit2: With cookie file.
<?php
$cookie_file = "cookie.txt"; //remember to check if it exists
$c = curl_init('http://*****.com/index.php/home/search/keyword/c815f2fec5?value=keyworkd');
curl_setopt($c, CURLOPT_USERAGENT, "User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:29.0) Gecko/20100101 Firefox/29.0");
curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($c, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($c, CURLOPT_COOKIEJAR, $cookie_file);
curl_setopt($c, CURLOPT_COOKIEFILE, $cookie_file);
curl_setopt($c, CURLOPT_REFERER, 'http://****.com/');
$z = curl_getinfo($c);
$s = curl_exec($c);
curl_close($c);
?>