php dom document remove special characters
im using dom document getElementsByTagName to retrieve a website title.
here is my code:
$doc = new DOMDocument();
@$doc->loadHTML($strData);
$doc->encoding = 'utf-8';
$doc->saveHTML(开发者_开发百科);
$titleNode = $doc->getElementsByTagName("title");
it works fine but when there is special character in the title, the retrieve data is not accurate. im getting "Some More Google Plus Invite Workarounds #wrapper { background:url(/) no-repeat 50% 0; } body { background:#CFD8E2; }" instead.
i did the following to replace the special chars but it didnt work:
// Replace all special characters into space
$specialChars = array('~','`','!','@','#','$','%','^','&','*','(',')','-','_','=','+','|','\\',']','[','}','{','"','\'',':',';','/','?','.',',','>','<');
foreach ($specialChars as $a) {
$titleNode = str_replace($a, ' ', $titleNode);
}
im getting empty title instead. The <title> value is somthing like this:
<title>Some More Google Plus Invite Workarounds < Communication, Social Networking < PC World India News < PC World.in</title>
so what should i be doing
It looks like your HTML is not well formed. If you have a stray < in the title, I'm surprised that you're not getting Warning: DOMDocument::loadHTML(): error parsing attribute name in Entity, line: 1 in <path> on line <line>.
As to replacing: if you replace all of the < and > in an html document, you'll not be able to retrieve elements from it: there will not be any elements left:
<head><title>Foo</title></head>
Becomes
headtitleFoo/title/head
Unfortunately, not much can be done to fix this -- bad HTML is bad HTML. If you know that you can expect that type of problem ahead of time, then you might be able to do something with preg_replace (maybe preg_replace("#\s<\s#g",'<',$input);? preg_match('#title[^>]*>(.*)</title#', $input, $matches)?) or substr, but you might just be up a creek.
i had a look the site; and it's a problem because they don't use the proper html-entities in the title:
<title>Some More Google Plus Invite Workarounds < Communication, Social Networking < PC World India News < PC World.in</title>
i assume that DOMDocument has an issue with that and thinks this is where the tag ends. As a workaround you could add '< ' to $specialChars to dodge this problem.
$fp = fsockopen("www.domain.com", 80, $errno, $errstr, 30);
if (!$fp) {
echo "$errstr ($errno)<br />\n";
} else {
$out = "GET / HTTP/1.1\r\n";
$out .= "Host: www.domain.com\r\n";
$out .= "Connection: Close\r\n\r\n";
fwrite($fp, $out);
$buffer = '';
while (!feof($fp)) {
$buffer .= fgets($fp, 128);
}
fclose($fp);
preg_match('#<.*?title.*?>(.*?)<.*?title.*?>#', $buffer, $matches);
var_dump($matches);
}
加载中,请稍侯......
精彩评论