Get data from between HTML tags

Hello, I am using :

$pattern = "#<caption([^>]*[^/])>#i";

preg_match_all($pattern ,$reply,$match); // Tested pattern
//echo $match[0];

print_r($match);

PHP:

To get everything between caption tags. Alltogether there are 2 caption tags and therefore 2 strings. However I get empty array as a result :

Array
(
    [0] => Array
        (
        )

    [1] => Array
        (
        )

)

PHP:

What am i doing wrong?

 

Try this pattern and will work.

$pattern = "#<caption\b[^>]*>(.*?)</caption>#i";

Code (markup):

 

I still have empty array.

 

In PHP, you define a REGEX statement by using forward slash at the beginning and end.

$pattern = '/<caption\b[^>]*>([\s\S]*)</caption>/i';
preg_match_all($pattern, $reply, $matches);
print_r($matches);

Code (markup):

 

Hm, I get this :

<b>Warning</b>:  preg_match_all() [<a href='function.preg-match-all'>function.preg-match-all</a>]: Unknown modifier 'c' in <b>C:\wamp2\www\AutoUpdater\test2.php</b> on line <b>33</b><br />

Code (markup):

Sorry to provide source code, can't copy from browser due to some effects there.

Line 33 is :

preg_match_all($pattern, $reply, $matches);

PHP:

 

$pattern = "#<caption\b[^>]*>(.*?)</caption>#i";
I tested this pattern. It is certainly works but keep in mind this:
Will not properly match tags nested inside themselves, like in <caption>text1<caption>text2</caption>text3</caption>.
It would be helpfull if you could provide here the $reply (or part of it maybe).

 

Wrong, forward slashes are probably the most common characters used for the delimiters, but you don't neccesarily need to use forward slashes, I prefer to use tildes (~), you can use any character which is non-alphanumeric, non-backslash or non-whitespace, refer to the documenation:

http://www.php.net/manual/en/regexp.reference.delimiters.php

 

Nick,

your pattern works, but I get :

Array
(
    [0] => Array
        (
            [0] => <caption\b[^>]*>(.*?)</caption>

        )

    [1] => Array
        (
            [0] => ]*>(.*?)
        )

)

PHP:

and not actual content between two tags...

For one reason I cannot post here the actual source code of the back-end site...

 

The best approach to regular expression is to think of the easier way to do it:

preg_match_all('/<caption.*>(.*)<\/caption>/Uism',$reply,$match)
print_r($match[1]);

PHP:

 

Array
(
)

PHP:

This is what I get, an empty array...

 

Do you have sample data?

I tried it with this data and its working:

$reply = '<caption name="test">Hi Caption 1</caption> ljhsldjkf ljkhl
o3i;j;
<caption>Test Caption 2</caption>';

preg_match_all('/<caption.*>(.*)<\/caption>/Uism',$reply,$match);
print_r($match[1]);

PHP:

 

Well, I tried on simple data, it works fine aswell. But, my $reply is really messy, lots of HTML tags and so on. there are 2 caption tags with content : Latest Version X.X.X. It provides the number of tags but not the content inside them...

 

Can you provide a sample data?

If it is confidential, you can send it via PM.

 

I have sent it to you, many thanks for help.

 

This should work,

preg_match_all('/caption&gt;(Latest Version.*)&lt;<span/Uism',$reply,$match);

// If you just want the version number
preg_match_all('/caption&gt;Latest Version (.*)&lt;<span/Uism',$reply,$match);

PHP:

 

Hello, this gives me

Array
(
    [0] => Array
        (
            [0] => caption&gt;Latest Version (.*)&lt;<span
        )

    [1] => Array
        (
            [0] => (.*)
        )

)

PHP:

Can a problem be in that I am curling the page and then doing preg_match? Here is the code of cURL page :

$reply = curl_exec($ch);
curl_close($ch);
// Get page content
echo $reply;

// Search for captions to receive versions of products



$html = file_get_contents('test2.php'); // test 2 is a current file
$pattern = "/<body[^>]*>(.*?)<\/body>/";
preg_match_all('/caption&gt;Latest Version (.*)&lt;<span/Uism',$html,$match);
print_r($match);

PHP:

 

You are not using CURL but file_get_contents.

I tested it with the file you provided and it works.

Just make sure that $html actually contains the HTML page you want.

 

I am using cURL in beggining. I log in using it to a private member area and send some JSON code to server and get HTML content in exchange (this is to emulate user-login and opening of download page).
Then I want to search given HTML for data between tags. So I do file_get_contents of the current file(in which I have all php, cURL, json code to be sent, etc). It also contains the HTML(i sent you the source code).
So, the $html actually contains what I want, but responces me with empty arrays.
I tried changing $html with $reply(which is basically the same, because $reply is answer from server with HTML inside), but still empty array.

 

If you want to do it without preg_match then you can try this:

function get_tag_info($string, $tag) {
	$start = '<'.$tag.'>';
	$end = '</'.$tag.'>';
    $ini = strpos($string,$start); 
    if ($ini === false)
		return ""; 
    $ini += strlen($start); 
    $len = strpos($string,$end,$ini) - $ini; 
    return substr($string,$ini,$len); 
}

PHP:

just run get_tag_info($html, 'html');

 

Thanks, that works great!