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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 | <?php /* ====================================================================== lastRSS 0.9.1 Simple yet powerfull PHP class to parse RSS files. by Vojtech Semecky, webmaster @ webdot . cz Latest version, features, manual and examples: http://lastrss.webdot.cz/ ---------------------------------------------------------------------- LICENSE This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License (GPL) as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. To read the license please visit http://www.gnu.org/copyleft/gpl.html ====================================================================== */ /** * lastRSS * Simple yet powerfull PHP class to parse RSS files. */ class lastRSS { // ------------------------------------------------------------------- // Public properties // ------------------------------------------------------------------- var $default_cp = 'UTF-8'; var $CDATA = 'nochange'; var $cp = ''; var $items_limit = 0; var $stripHTML = False; var $date_format = ''; // ------------------------------------------------------------------- // Private variables // ------------------------------------------------------------------- var $channeltags = array ('title', 'link', 'description', 'language', 'copyright', 'managingEditor', 'webMaster', 'lastBuildDate', 'rating', 'docs'); var $itemtags = array('title', 'link', 'description', 'author', 'category', 'comments', 'enclosure', 'guid', 'pubDate', 'source'); var $imagetags = array('title', 'url', 'link', 'width', 'height'); var $textinputtags = array('title', 'description', 'name', 'link'); // ------------------------------------------------------------------- // Parse RSS file and returns associative array. // ------------------------------------------------------------------- function Get ($rss_url) { // If CACHE ENABLED if ($this->cache_dir != '') { $cache_file = $this->cache_dir . '/rsscache_' . md5($rss_url); $timedif = @(time() - filemtime($cache_file)); if ($timedif < $this->cache_time) { // cached file is fresh enough, return cached array $result = unserialize(join('', file($cache_file))); // set 'cached' to 1 only if cached file is correct if ($result) $result['cached'] = 1; } else { // cached file is too old, create new $result = $this->Parse($rss_url); $serialized = serialize($result); if ($f = @fopen($cache_file, 'w')) { fwrite ($f, $serialized, strlen($serialized)); fclose($f); } if ($result) $result['cached'] = 0; } } // If CACHE DISABLED >> load and parse the file directly else { $result = $this->Parse($rss_url); if ($result) $result['cached'] = 0; } // return result return $result; } // ------------------------------------------------------------------- // Modification of preg_match(); return trimed field with index 1 // from 'classic' preg_match() array output // ------------------------------------------------------------------- function my_preg_match ($pattern, $subject) { // start regullar expression preg_match($pattern, $subject, $out); // if there is some result... process it and return it if(isset($out[1])) { // Process CDATA (if present) if ($this->CDATA == 'content') { // Get CDATA content (without CDATA tag) $out[1] = strtr($out[1], array('<![CDATA['=>'', ']]>'=>'')); } elseif ($this->CDATA == 'strip') { // Strip CDATA $out[1] = strtr($out[1], array('<![CDATA['=>'', ']]>'=>'')); } // If code page is set convert character encoding to required if ($this->cp != '') //$out[1] = $this->MyConvertEncoding($this->rsscp, $this->cp, $out[1]); $out[1] = iconv($this->rsscp, $this->cp.'//TRANSLIT', $out[1]); // Return result return trim($out[1]); } else { // if there is NO result, return empty string return ''; } } // ------------------------------------------------------------------- // Replace HTML entities &something; by real characters // ------------------------------------------------------------------- function unhtmlentities ($string) { // Get HTML entities table $trans_tbl = get_html_translation_table (HTML_ENTITIES, ENT_QUOTES); // Flip keys<==>values $trans_tbl = array_flip ($trans_tbl); // Add support for ' entity (missing in HTML_ENTITIES) $trans_tbl += array(''' => "'"); // Replace entities by values return strtr ($string, $trans_tbl); } // ------------------------------------------------------------------- // Parse() is private method used by Get() to load and parse RSS file. // Don't use Parse() in your scripts - use Get($rss_file) instead. // ------------------------------------------------------------------- function Parse ($rss_url) { // Open and load RSS file if ($f = @fopen($rss_url, 'r')) { $rss_content = ''; while (!feof($f)) { $rss_content .= fgets($f, 4096); print $rss_content; } fclose($f); // Parse document encoding $result['encoding'] = $this->my_preg_match("'encoding=[\'\"](.*?)[\'\"]'si", $rss_content); // if document codepage is specified, use it if ($result['encoding'] != '') { $this->rsscp = $result['encoding']; } // This is used in my_preg_match() // otherwise use the default codepage else { $this->rsscp = $this->default_cp; } // This is used in my_preg_match() // Parse CHANNEL info preg_match("'<channel.*?>(.*?)</channel>'si", $rss_content, $out_channel); foreach($this->channeltags as $channeltag) { $temp = $this->my_preg_match("'<$channeltag.*?>(.*?)</$channeltag>'si", $out_channel[1]); if ($temp != '') $result[$channeltag] = $temp; // Set only if not empty } // If date_format is specified and lastBuildDate is valid if ($this->date_format != '' && ($timestamp = strtotime($result['lastBuildDate'])) !==-1) { // convert lastBuildDate to specified date format $result['lastBuildDate'] = date($this->date_format, $timestamp); } // Parse TEXTINPUT info preg_match("'<textinput(|[^>]*[^/])>(.*?)</textinput>'si", $rss_content, $out_textinfo); // This a little strange regexp means: // Look for tag <textinput> with or without any attributes, but skip truncated version <textinput /> (it's not beggining tag) if (isset($out_textinfo[2])) { foreach($this->textinputtags as $textinputtag) { $temp = $this->my_preg_match("'<$textinputtag.*?>(.*?)</$textinputtag>'si", $out_textinfo[2]); if ($temp != '') $result['textinput_'.$textinputtag] = $temp; // Set only if not empty } } // Parse IMAGE info preg_match("'<image.*?>(.*?)</image>'si", $rss_content, $out_imageinfo); if (isset($out_imageinfo[1])) { foreach($this->imagetags as $imagetag) { $temp = $this->my_preg_match("'<$imagetag.*?>(.*?)</$imagetag>'si", $out_imageinfo[1]); if ($temp != '') $result['image_'.$imagetag] = $temp; // Set only if not empty } } // Parse ITEMS preg_match_all("'<item(| .*?)>(.*?)</item>'si", $rss_content, $items); $rss_items = $items[2]; $i = 0; $result['items'] = array(); // create array even if there are no items foreach($rss_items as $rss_item) { // If number of items is lower then limit: Parse one item if ($i < $this->items_limit || $this->items_limit == 0) { foreach($this->itemtags as $itemtag) { $temp = $this->my_preg_match("'<$itemtag.*?>(.*?)</$itemtag>'si", $rss_item); if ($temp != '') $result['items'][$i][$itemtag] = $temp; // Set only if not empty } // Strip HTML tags and other bullshit from DESCRIPTION if ($this->stripHTML && $result['items'][$i]['description']) $result['items'][$i]['description'] = strip_tags($this->unhtmlentities(strip_tags($result['items'][$i]['description']))); // Strip HTML tags and other bullshit from TITLE if ($this->stripHTML && $result['items'][$i]['title']) $result['items'][$i]['title'] = strip_tags($this->unhtmlentities(strip_tags($result['items'][$i]['title']))); // If date_format is specified and pubDate is valid if ($this->date_format != '' && ($timestamp = strtotime($result['items'][$i]['pubDate'])) !==-1) { // convert pubDate to specified date format $result['items'][$i]['pubDate'] = date($this->date_format, $timestamp); } // Item counter $i++; } } &nb |