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Scan a URL for a specific word on page????? Need a pro's help...

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I need php script that will enable me to scan a url for a specific word, then copy the next word after it to a vaiable...

Imagine scanning this sites hompage for totalposts and then grabbing the following number and displaying it on my site...

[b]Thanking you for your time....[/b]

Wayne [img src=\"style_emoticons/[#EMO_DIR#]/laugh.gif\" style=\"vertical-align:middle\" emoid=\":laugh:\" border=\"0\" alt=\"laugh.gif\" /]

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$filename = "http://www.yourdomain.com/index.php";
$contents = file_get_contents($filename);//read the url
preg_match("`([0-9]+) User\(s\) are browsing this forum`",$contents,$var);//write a RE to parse the contents
//$var[1] will contain the no of users

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