pskov-eparhiya-ru-to-rss.php

<?php

# Library https://github.com/mibe/FeedWriter was used
# php 5.3 required!

require_once 'FeedWriter_Lib//Item.php';
require_once 'FeedWriter_Lib//Feed.php';
require_once 'FeedWriter_Lib//RSS2.php';
require_once 'FeedWriter_Lib//InvalidOperationException.php';

$FEED_URL = 'http://pskov-eparhiya.ru/api/getNews';
$MAX_DESCRIPTION_LENGTH = 400;

// suppress possible errors
$dataArticles = @json_decode(file_get_contents($FEED_URL), 1);
if (!$dataArticles) {
    // if error on load or parse then empty data
    $dataArticles = ['test'];
}


// for debug:
//var_export($dataArticles);

date_default_timezone_set('UTC');
use \FeedWriter\RSS2;

//Creating an instance of RSS2 class.
$rssFeed = new RSS2();
//Setting the channel elements
//Use wrapper functions for common channel elements
$rssFeed->setTitle('pskov-eparhiya.ru RSS feed');
$rssFeed->setLink('http://pskov-eparhiya.ru/');
$rssFeed->setDescription('Официальный сайт Псковского Епархиального Управления RSS');

function mb_wordwrap($str, $width = 75, $break = "\n", $cut = false) {
    $lines = explode($break, $str);
    foreach ($lines as &$line) {
        $line = rtrim($line);
        if (mb_strlen($line) <= $width)
            continue;
        $words = explode(' ', $line);
        $line = '';
        $actual = '';
        foreach ($words as $word) {
            if (mb_strlen($actual.$word) <= $width)
                $actual .= $word.' ';
            else {
                if ($actual != '')
                    $line .= rtrim($actual).$break;
                $actual = $word;
                if ($cut) {
                    while (mb_strlen($actual) > $width) {
                        $line .= mb_substr($actual, 0, $width).$break;
                        $actual = mb_substr($actual, $width);
                    }
                }
                $actual .= ' ';
            }
        }
        $line .= trim($actual);
    }
    return implode($break, $lines);
}

function string_cut_to_max_length($s, $maxLength) {
  if (mb_strlen($s) > $maxLength - 3) {
  //    return mb_substr($s, 0, $maxLength - 3) . '...';
      $result = mb_wordwrap($s, $maxLength - 3);
      $result = substr($result, 0, strpos($result, "\n"));
      return $result . '...';
  } else {
      return $s;
  }
}

foreach ($dataArticles as $article) {

    $rssItem = $rssFeed->createNewItem();

    //Add item details
    $rssItem->setTitle($article['title']);
    $rssItem->setLink($article['link']);

    if (isset($article['created_at'])) {
        // ожидается дата вида "2018-02-01"
        //DateTime::createFromFormat('Y-m-d H:i:s', $mysql_source_date);
        //$dateTime = DateTime::createFromFormat('Y-m-d H:i', $article['created_at'].' 00:00');
        $rssItem->setDate(strtotime($article['created_at']));
        //$rssItem->setDate($dateTime);
    }

    $imageUrl = (isset($article['img'])) ? $article['img'] : null;

    $description = ($imageUrl ? '<img src="'.$imageUrl.'" />' : '')
      . '<p>'.string_cut_to_max_length($article['text'], $MAX_DESCRIPTION_LENGTH).'</p>';

    $rssItem->setDescription($description);
    //$rssItem->setContent($article['text']); //error: supported in ATOM feeds only
    $rssItem->setId($article['id']);
    $rssFeed->addItem($rssItem);
}

$rssFeed->printFeed();

// test string