PHP CURLでセッション情報、エラー情報、HTTPヘッダー情報を表示

$target = "http://localhost";

$sc = curl_init();

curl_setopt($sc, CURLOPT_URL, $target);
curl_setopt($sc, CURLOPT_RETURNTRANSFER, TRUE);

$return = curl_exec($sc); 
$sess_info = curl_getinfo($sc);

curl_close($sc);

var_dump($sess_info);

　
○実行例
　
[“url”]=> string(16) “http://localhost”
[“content_type”]=> string(9) “text/html”
[“http_code”]=> int(200)
[“header_size”]=> int(251)
[“request_size”]=> int(48)
[“filetime”]=> int(-1)
[“ssl_verify_result”]=> int(0)
[“redirect_count”]=> int(0)
[“total_time”]=> float(1.031)
[“namelookup_time”]=> float(0)
[“connect_time”]=> float(1.031)
[“pretransfer_time”]=> float(1.031)
[“size_upload”]=> float(0)
[“size_download”]=> float(44)
[“speed_download”]=> float(42)
[“speed_upload”]=> float(0)
[“download_content_length”]=> float(44)
[“upload_content_length”]=> float(0)
[“starttransfer_time”]=> float(1.031)
[“redirect_time”]=> float(0)
[“certinfo”]=> array(0) { }
[“primary_ip”]=> string(9) “127.0.0.1”
[“primary_port”]=> int(80)
[“local_ip”]=> string(9) “127.0.0.1”
[“local_port”]=> int(3636)
[“redirect_url”]=> string(0) “”