replacing strings in documents

[hlavto]

Hi i am searching for a piece of php code that will open a html page search it down, find a link
in example:"http://www.seznam.cz" and replace it with another link
in example with: "http://www.centrum.cz"

i can open a html page using $pole=file("document.htm");
but i still have problems with searching the right address(www.seznam.cz) in the variable $pole. Can someone help me? Thanks. Tomas Hlavacek [e-mail]

[daynah]

eregi() , my friend. 🙂 I just started using it lately... and I love it!

[hlavto]

Thank you. It really helped 🙂
I have now another problem:
I want to get a value from variable from a site which is called PHPSESSID. I know how to get it if loading a file to $pole from the address without the add "in.php3?id=webdreams"

<?
$pole=file("http://www.toplist.xx");
?>

but it does'nt works with this

<?
$pole=file("http://www.toplist.xx/in.php3?id=webdreams");
?>

is there another way how to load a php document into a variable?