Parse a html document.

[miles_rich]

if i had a html document, how would i parse it so that i could see the html code in a text box, after i have opened up a php page?

[epp_b]

Use the file() function, which parses a file into an array.

eg.

$theFile = file("page.html");

Each element of $theFile array corresponds to the respective line in the HTML document (line one is $theFile[0], line two is $theFile[1], because indexing starts at zero).

Then simply echo that variable in a loop within the textarea.

[Mordecai]

Try replacing the < and >s with &lt; and &gt;.
http://www.php.net/ereg_replace
http://www.php.net/str_replace
http://www.php.net/preg_replace