tv_detail.php

<?php
    function curl($url)
    {
        $ua = 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36';
        $curl = curl_init($url);
        curl_setopt($curl, CURLOPT_USERAGENT, $ua);
        curl_setopt($curl, CURLOPT_FAILONERROR, true);
        curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
        $content = curl_exec($curl);
        curl_close($curl);

        if (empty($content)) {
            throw new Exception("Can't get content, url: " . $url);
        }

        return $content;
    }

    function getDetailSummarize($content)
    {
        $find = '<div class="detail_summarize">';
        $start = strpos($content, $find);
        if ($start === false) {
            throw new Exception("Can't find detail_summarize start point.");
        }

        $start += strlen($find);
        $end = strpos($content, 'class="episode_info">', $start);
        if ($end === false) {
            throw new Exception("Can't find detail_summarize end point.");
        }

        return substr($content, $start, $end - $start);
    }

    function getTitle($content)
    {
        $find = '<strong class="tit_movie">';
        $start = strpos($content, $find);
        if ($start === false) {
            throw new Exception("Can't find title start point.");
        }

        $start += strlen($find);
        $end = strpos($content, '</strong>', $start);
        if ($end === false) {
            throw new Exception("Can't find title end point.");
        }

        return trim(substr($content, $start, $end - $start));
    }

    function getRating($content)
    {
        $find = '<em class="emph_grade">';
        $start = strpos($content, $find);
        if ($start === false) {
            throw new Exception("Can't find rating start point.");
        }

        $start += strlen($find);
        $end = strpos($content, '</em>', $start);
        if ($end === false) {
            throw new Exception("Can't find rating end point.");
        }

        return (float)substr($content, $start, $end - $start);
    }

    function getGenres($content)
    {
        $find = '<dd class="f_l">';
        $start = strpos($content, $find);
        if ($start === false) {
            throw new Exception("Can't find genres start point.");
        }

        $start += strlen($find);
        $end = strpos($content, '</dd>', $start);
        if ($end === false) {
            throw new Exception("Can't find genres end point.");
        }

        return explode('/', str_replace(' ', '', substr($content, $start, $end - $start)));
    }

    function getStudio($content)
    {
        $find = '<em class="emph_g">';
        $start = strpos($content, $find);
        if ($start === false) {
            throw new Exception("Can't find studio start point.");
        }

        $start += strlen($find);
        $end = strpos($content, '</em>', $start);
        if ($end === false) {
            throw new Exception("Can't find studio end point.");
        }

        return trim(substr($content, $start, $end - $start));
    }

    function getOriginallyAvailableAt($content)
    {
        if (preg_match('/(\d{4}\.\d{2}\.\d{2})~/', $content, $matches) == 0) {
            // throw new Exception("Can't find originally_available_at point.");
            return null;
        }

        return $matches[1];
    }

    function getSummary($content)
    {
        $find = '<div class="desc_movie">';
        $start = strpos($content, $find);
        if ($start === false) {
            throw new Exception("Can't find summary start point.");
        }

        $start += strlen($find);
        $end = strpos($content, '<div', $start);
        if ($end === false) {
            throw new Exception("Can't find summary end point.");
        }

        return trim(str_replace(["\r\n", "\r", "\n\n"], "\n", strip_tags(substr($content, $start, $end - $start))));
    }

    function getPosterUrl($content)
    {
        $find = '<img src="';
        $start = strpos($content, $find, $prepos);
        if ($start === false) {
            throw new Exception("Can't find poster start point.");
        }

        $start += strlen($find);
        $end = strpos($content, '"', $start);
        if ($end === false) {
            throw new Exception("Can't find poster end point.");
        }

        return substr($content, $start, $end - $start);
    }

    function getJson($content)
    {
        $detailSummarize = getDetailSummarize($content);
        $title = getTitle($detailSummarize);
        $rating = getRating($detailSummarize);
        $genres = getGenres($detailSummarize);
        $studio = getStudio($detailSummarize);
        $originallyAvailableAt = getOriginallyAvailableAt($detailSummarize);
        $summary = getSummary($detailSummarize);
        $posterUrl = getPosterUrl($detailSummarize);

        $result = [
            'title' => $title,
            'original_title' => '',
            'rating' => $rating,
            'genres' => $genres,
            'studio' => $studio,
            'originally_available_at' => $originallyAvailableAt,
            'summary' => $summary,
            'poster_url' => $posterUrl,
        ];

        return $result;
    }

    function main($programId)
    {
        try {
            $content = curl('https://movie.daum.net/tv/main?tvProgramId=' . $programId);
            $json = [
                'data' => getJson($content),
            ];
        } catch (Exception $e) {
            $json = [
                'error' => (string)$e,
            ];
        }

        header('Content-Type: application/json');
        $result = json_encode($json, JSON_UNESCAPED_UNICODE);
        echo $result;
    }

    main(array_key_exists('id', $_GET) ? (int)$_GET['id'] : 0);