Alternate header image?

I need to alternate a header image depending upon the page on a website I am working on. Unfortunately I absolutely nothing about PHP and really need some help here. I asked customer support and they told me to add:

<?php
    $mypage = strtolower($this_filename);
    switch ($mypage){
        case "pagename1.php":
        $header_image = "some_file1";
        break;

        case "pagename2.php":
        $header_image = "some_file2";
        break;

        case "pagename3.php":
        $header_image = "some_file3";
        break;

        case "pagename4.php":
        $header_image = "some_file4";
        break;
    }
?> 

Code (markup):

I've tried this out, only changing the $header_image = "some_file" and the case "pagename.php" to my own image paths and file names. Unfortunantly, it does nothing for me and I really don't know where I am going wrong because, as I have said I know NADA about PHP but I really need this to work so I don't have to attempt to edit each page. I have Googled this for hours and am no closer to really understanding it.

For instance,

$mypage = strtolower($this_filename);

Code (markup):

means nothing to me.

Can anyone help me, please?

- Theresa

 

Try using $_SERVER['SCRIPT_FILENAME'].

 

you should learn html first, then javascript, php, flash...
$mypage = strtolower($this_filename); //convert filename to lower case

 

I know html and css, slowly but surely attempting to learn javascript (I'm not an idiot, I just don't know PHP). And I have already tried the script, exactly as you see it, lowercase everything (because that's what xhtml has taught me ) except adding my own image paths etc.

This is basically what I have coded.

<?php
    $mypage = strtolower($this_filename);
    switch ($mypage){
        case "pagename1.php":
        $header_image = "imgs/some_file1.gif";
        break;

        case "pagename2.php":
        $header_image = "imgs/some_file2.gif";
        break;
    }
?>

Code (markup):

 

Your code looks fine except that the variable $this_filename is unassigned.

Try the following code:

<?php
    $this_filename = $_SERVER['PHP_SELF'];
    $mypage = strtolower($this_filename);
    switch ($mypage){
        case "pagename1.php":
        $header_image = "imgs/some_file1.gif";
        break;

        case "pagename2.php":
        $header_image = "imgs/some_file2.gif";
        break;
    }
?>

Code (markup):

For this code to work, you need to make sure the php script (pagename1.php etc.) and the "imgs" folder are in the same directory.