how to use urlencode( ) in my example?

[et4891]

I checked php.net and read a few examples of how

urlencode( )

works but somehow I just can't get it right. Can someone give me a hand?

 

it'll be a lot to paste everything so hopefully my brief example would make sense.

I have a page called 2.php and it was called to show some contents of a .txt file choosen in 1.php.

I am told to make a link for 3.php and the link should look something like

/3?filename=a.txt with 

filename as GET parameter name and Ensure GET parameter value is urlencoded using the

urlencode( ) function.

 

but I'm confused how and where I should put urlencode() to make it work.

I'll paste my 2.php code here...I simplified the codes a bit...

 

<?php
$fileContents = file("./aaa/" . $_GET["course"] . ".txt");
echo "<table border=\"1\">";
foreach($fileContents as $row)
{
echo "<tr>";
$contents = preg_split("/,/", $row);
foreach($contents as $eachline)
{
 echo "<td>";
 if(!(preg_match("/@/", $eachline)))
 {
 echo trim(ucfirst($eachline));
 }
 else
 {
 echo trim(strtolower($eachline));
 }
 echo "</td>";
}
echo "</tr>";
}
echo "</table>";
echo "<a href='./1.php'>Choose another txt file</a><br/>";
echo "or<br/>";
echo "<a href='.3.php?'>Work with this txt file</a>";
?>

 

BUT…the 3.php option must have a query string appended to it: the name of the text file that was selected in 1, so instead of ./3.php, the url should be something such as .

/3?filename=asdf.txt

 

Use 「filename」 as the GET parameter name. Ensure the GET parameter value is urlencoded using the

urlencode( )

function.

 

but I'm just not sure how to get it to work....