检索远程页面的标题

Question

I have a little problem with the pattern for retrieving the title of the remote page while same pattern is giving the result here is the sample.

preg_match_all('|<title>(.*)</title>|U',$this->data,$title);

is for other url and giving the result . While following return the empty array

preg_match_all('|<title>(.*)</title>|U', $valD, $title);

can any on tell me the is any problem with these lines.

Where $this->data and $valD holds the content of two different urls for different servers.

Please help me. I tried it to solve it but I failed to solve it. So I requesting the you all to tell me my faults in this.

Thank you.

Answer 1

If you are matching HTML, then you should also expect uppercase tags. Add the |i flag therefore.

The title tag might also contain newlines, which is why the |s flag should also be present.

 preg_match_all('|<title>(.*)</title>|Uis', ...

Answer 2

Maybe there is a line break in the title tag such like this:

<title>
The page title
</title>

Try

preg_match_all('|<title>[:space:]*(.*)[:space:]*</title>|U', $valD, $title);

instead.