Online PHP editor | output for ikB4Y

@ 2016-01-11T17:54:41Z

<?php
class Parser {
    // main
    public static function parse($xmlData) {
        $res = null;
        libxml_use_internal_errors(true);
        $dom = new DOMDocument();
        $dom->recover = true;
        if(!$dom->loadXML($xmlData)) {
            $res['error'] = libxml_get_errors();
            libxml_clear_errors();
        } else {
            self::read($res, $dom);
        }
        return $res;
    }
 
    // tools // TODO use alternate class
    private static function parseText($str) {
        return trim(htmlentities($str));
    }
 
    // void
    private static function read(&$res, &$dom) {
        $rss = $dom->getElementsByTagName('rss');
        if($rss->length == 0) {
            $res['error'] = 'No rss node.';
        } else {
            $channel = $rss->item(0)->getElementsByTagName('channel');
            if($channel->length == 0) {
                $res['error'] = 'No channel node.';
            } else {
                self::getNodes($res, $channel, array('title', 'link', 'description'));
            }
        }
    }
 
    private static function getNode(&$res, &$channel, $name) {
        $node = $channel->item(0)->getElementsByTagName($name);
        if($node->length == 0) {
            $res[$name] = null;
        } else {
            $res[$name] = self::parseText($node->item(0)->nodeValue);
        }
    }
 
    private static function getNodes(&$res, &$channel, $names) {
        foreach($names as $name) {
            self::getNode($res, $channel, $name);
        }
    }
}
 
$file = file_get_contents('http://korben.info/feed');
if(!$file) {
    echo 'err cannot read file'; // TODO curl internet
} else {
    $res = Parser::parse($file);
    var_dump($res);
}

Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Warning: file_get_contents(): php_network_getaddresses: getaddrinfo for korben.info failed: System error in /in/ikB4Y on line 54 Warning: file_get_contents(http://korben.info/feed): Failed to open stream: php_network_getaddresses: getaddrinfo for korben.info failed: System error in /in/ikB4Y on line 54 err cannot read file
Output for 8.0.13 - 8.0.30: Warning: file_get_contents(): php_network_getaddresses: getaddrinfo failed: System error in /in/ikB4Y on line 54 Warning: file_get_contents(http://korben.info/feed): Failed to open stream: php_network_getaddresses: getaddrinfo failed: System error in /in/ikB4Y on line 54 err cannot read file
Output for 8.0.0 - 8.0.12: Warning: file_get_contents(): php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /in/ikB4Y on line 54 Warning: file_get_contents(http://korben.info/feed): Failed to open stream: php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /in/ikB4Y on line 54 err cannot read file
Output for 7.3.32 - 7.3.33, 7.4.26 - 7.4.33: Warning: file_get_contents(): php_network_getaddresses: getaddrinfo failed: System error in /in/ikB4Y on line 54 Warning: file_get_contents(http://korben.info/feed): failed to open stream: php_network_getaddresses: getaddrinfo failed: System error in /in/ikB4Y on line 54 err cannot read file
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25: Warning: file_get_contents(): php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /in/ikB4Y on line 54 Warning: file_get_contents(http://korben.info/feed): failed to open stream: php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /in/ikB4Y on line 54 err cannot read file

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