ASP to PHP conversion, what did I do wrong? - php

Question

I'm pretty new to PHP and trying to convert an asp file handling "function" to php, but for some reason the page just turns up blank when I try to run it with the PHP part (if I remove it the site fires up perfectly, without the functionallity ofcourse.
So my question is: What did I do wrong here?
<?php
if (!$_GET['page'] == "")
if (!$_GET['page'] == "gaestebog")
If (file_exists($_GET['page'] && ".html"))
$f=$file=fopen($_GET['page'] && ".html", r);
print $f;
fclose($file);
Else
print("Siden kunne ikke findes");
End If
elseif ($_GET['page'] == "gaestebog")
print "<a href='default.php?page=gaestebog'>Der kan i øjeblikket ikke oprettes nye indlæg</a><br /><br />"
end if
elseif ($_GET['page'] == "")
If (file_exists("forside.html"))
$f=$file=fopen("forside.html", r);
print $f;
fclose($file);
Else
print("Siden kunne ikke findes");
End If
end if
?>

Answer 1

if ( isset($_GET['page']) )
{
$page = $_GET['page'];
if ( $page != "gaestebog" )
{
$filename = sprintf('%s.html', $page);
if ( file_exists($filename) )
{
if( $handle = fopen($filename, 'r') )
{
echo fread($handle, filesize($filename));
fclose($handle);
}
}
else
{
echo "Siden kunne ikke findes";
}
}
else if ( empty($page) )
{
if ( file_exists("forside.html") )
{
if( $handle = fopen("forside.html", 'r') )
{
echo fread($handle, filesize("forside.html"));
fclose($handle);
}
}
else
{
echo "Siden kunne ikke findes";
}
}
}

Answer 2

Try this:
<?php
if (isset($_GET['page']) && !empty($_GET['page'])) {
if ($_GET['page'] !== "gaestebog") {
if (file_exists($_GET['page'] . ".html")) {
$file = fopen($_GET['page'] . ".html", "r");
$contents = fread($file, filesize($_GET['page'] . ".html"));
echo $contents;
fclose($file);
} else {
echo "Siden kunne ikke findes";
}
} else if ($_GET['page'] == "gaestebog") {
echo "<a href='default.php?page=gaestebog'>Der kan i øjeblikket ikke oprettes nye indlæg</a><br /><br />";
} else if (empty($_GET['page'])) {
if (file_exists("forside.html")) {
$file = fopen("forside.html", "r");
$contents = fread($file, filesize("forside.html"));
echo $contents;
fclose($file);
}
}
echo "Siden kunne ikke findes";
}
?>