<meta charset="utf-8">
<?php
    class Curl {
        public function pfs($url){
            $result = $this->parse($url);
            if(!$result)echo "error parse";
            else{
                $result = $this->find($result);
                if(!$result)echo "error find";
                else{
                    $result = $this->save($result);
                    if(!$result)echo "error save<br>";
                    else echo "Успешное сохранение<br>";
                }
            }
        }

        private function parse($url){
            $curl = curl_init();

            curl_setopt($curl, CURLOPT_URL, $url);
            curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
            curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1);

            $result = curl_exec($curl);
            if ($result === false) {
            return false;
            } else {
                return $result;
            }
        }

        private function find($res){
            preg_match_all("#<title>(.*?)</title>#su", "$res", $title);
            $title = $title[1][0];

            preg_match_all("#<h1.*?>(.*?)</h1>#su", "$res", $h1);
            $h1 = $h1[1][0];

            preg_match_all('#</h1>(.*?)<div\s+id="footer"\s*>#su', "$res", $text);
            $text = $text[1][0];
            $text = preg_replace("#<span.*?>(.*?)</span>#su", "$1", $text);
            $text = preg_replace('#<p\s+class=".*?">(.*?)</p>#su', "<p>$1</p>", $text);
            $text = preg_replace('#<a.+?href=".*?".*?>(.*?)</a>#su', "$1", $text);
            $text = preg_replace('#<div.*?>#su', "", $text);
            $text = preg_replace('#</div>#su', "", $text);

            $result = ['title' => $title, 'h1' => $h1, 'text' => $text];
            return $result;
        }

        private function save($res){
            $host = 'localhost';
            $database = 'pars';
            $user = 'root';
            $password = '';

            mysql_set_charset("utf-8");
            $link = mysqli_connect($host, $user, $password, $database)
                or die("Ошибка " . mysqli_error($link));

            $query = "INSERT INTO parse (title, h1, text)
            VALUES ('".$res['title']."', '".$res['h1']."', '".$res['text']."')";
            $result = mysqli_query($link, $query) or die("Ошибка " . mysqli_error($link));

            mysqli_close($link);
            return true;
        }
    }

    $links = [
    'http://theory.phphtml.net/exercises/advanced/php/parsing/rabota-s-bibliotekoj-curl-v-php/1/1.php',
    'http://theory.phphtml.net/exercises/advanced/php/parsing/rabota-s-bibliotekoj-curl-v-php/1/2.php',
    'http://theory.phphtml.net/exercises/advanced/php/parsing/rabota-s-bibliotekoj-curl-v-php/1/3.php',
    'http://theory.phphtml.net/exercises/advanced/php/parsing/rabota-s-bibliotekoj-curl-v-php/1/4.php',
    'http://theory.phphtml.net/exercises/advanced/php/parsing/rabota-s-bibliotekoj-curl-v-php/1/5.php'
    ];

    foreach($links as $el){
        $parse = new Curl;
        $parse->pfs($el);
    }
?>