Expert needed!

drisate · April 10, 2009

Hey guys i need to retreive vars from a foreign website but i am very bad with regular expretions. I need to retreive from a board page the username and posted date for every treads of the page the HTML looks like this and i need to retreive the red parts:

-------------------------------------

<tr>

Heavy Fighter <br />

<br />

<br />

Registration Date: 03-10-2006<br />

Posts: 1,102<br />

Universe: uni1<br />

Alliance: pirates<br />

<br />

</tr>

</table>

</td>

<tr>

<tr>

</tr>

</table>

<br />

message</div>

</td>

</tr>

</table>

</td>

</tr>

<tr>

<img src="en_images_ogame/posticon.gif" border="0" alt title /></a> 03-24-2009

</span></td>

</tr>

</table>

</td>

</tr>

</table>

-------------------------------------

So objective 1, loop the page for every threads

objective 2 for each loops, extract the username and posted date

If you need a full page exemple, this is one: http://board.ogame.org/thread.php?threadid=537635

nrg_alpha · April 10, 2009

I'll supply the meat and potatoes, you supply the gravy if you get my drift

$userName = array();
$postDate = array();
date_default_timezone_set('America/Montreal'); // *set this value to correct timezone of server in question

$dom = new DOMDocument;
@$dom->loadHTMLFile('http://board.ogame.org/thread.php?threadid=537635');
$xpath = new DOMXPath($dom);
$aTag = $xpath->query('//a[substring(@href,1,19) ="profile.php?userid="]'); // extract user
$spanTag = $xpath->query('//td[@class="tablea" or @class="tableb"]/span'); // extract post date

foreach ($aTag as $aVal) {
$userName[] = $aVal->nodeValue; // store user name into array $user
}

foreach ($spanTag as $spanVal) {
if(preg_match('#(??:\d{2}-){2}\d{4}|Today,) \d{2}:\d{2}#', $spanVal->nodeValue, $match)){
	$match[0] = str_replace('Today,', date('m-d-Y'), $match[0]); // if found, replace 'Today,' with today's date in xx-xx-2009 format
	$postDate[] = $match[0]; // store post date into array $time
}
}

echo '<pre>'.print_r($userName, true); // outputs all user names
echo '<pre>'.print_r($postDate, true); // outputs all post dates
// *We set the default time zone in case the sequence 'Today,' is found within the time entry, which we convert to today's date using date(). Otherwise, there will be a Strict Standards Notice

Output:

Array
(
    [0] => Da LaZ
    [1] => Zombie
    [2] => .GameOver
    [3] => .GameOver
    [4] => .GameOver
    [5] => kepone factory
    [6] => Necessary Evil
    [7] => greenie
)
Array
(
    [0] => 03-24-2009 02:37
    [1] => 03-26-2009 19:13
    [2] => 03-27-2009 23:45
    [3] => 03-29-2009 22:45
    [4] => 04-01-2009 20:24
    [5] => 04-01-2009 20:39
    [6] => 04-01-2009 20:49
    [7] => 04-10-2009 03:40
)

nrg_alpha · April 10, 2009

I forgot about 'Yesterday,' as a possibility, so after this line:

$match[0] = str_replace('Today,', date('m-d-Y'), $match[0]); // if found, replace 'Today,' with today's date in xx-xx-2009 format

You can add:

$match[0] = str_replace('Yesterday,', date('m-d-Y', strtotime("-1 day")), $match[0]); // if found, replace 'Yesterday,' with today's date -1 day in xx-xx-2009 format

nrg_alpha · April 11, 2009

As I went out for a walk, I pondered about this thread and what I provided, and thought it could be faster (how much, I don't know.. didn't time it).

Therefore, I tweaked the snippet here and there. This version has tighter entry extraction and doesn't use regex (and now I'm done):

$userName = array();
$postDate = array();
date_default_timezone_set('America/Montreal'); // *set this value to correct timezone of server in question

$dom = new DOMDocument;
@$dom->loadHTMLFile('http://board.ogame.org/thread.php?threadid=537635');
$xpath = new DOMXPath($dom);
$aTag = $xpath->query('//a[substring(@href,1,19) ="profile.php?userid="]'); // extract user
$spanTag = $xpath->query('//td[@class="tablea" or @class="tableb"]/span[contains(.,":")]'); // extract post date

foreach ($aTag as $aVal) {
$userName[] = $aVal->nodeValue; // store user name into array $user
}

foreach ($spanTag as $spanVal){
if(strlen($spanVal->nodeValue) < 27){
	$spanVal->nodeValue = trim($spanVal->nodeValue);
	$spanVal->nodeValue = (substr($spanVal->nodeValue, 0, 6) == 'Today,')? str_replace('Today,', date('m-d-Y'), $spanVal->nodeValue) : $spanVal->nodeValue;
	$spanVal->nodeValue = (substr($spanVal->nodeValue, 0, 10) == 'Yesterday,')? str_replace('Yesterday,', date('m-d-Y', strtotime("-1 day")), $spanVal->nodeValue) : $spanVal->nodeValue;
	$postDate[] = $spanVal->nodeValue; // store post date into array $time
}
}

echo '<pre>'.print_r($userName, true); // outputs all user names
echo '<pre>'.print_r($postDate, true); // outputs all post dates

Either version should accomplish the same thing.

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