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Thread: Relative paths

  1. #1
    New Coder
    Join Date
    Jun 2007
    Thanked 1 Time in 1 Post

    Relative paths

    Running into problems with relative paths for various files. I'm trying to segregate related scripts into their own folders. ie header & footer into a template folder. admin functions into an admin folder etc...

    I'm running into the most basic problems such as - a page in the admin folder includes the header file.
    The header file is being included ok but the CSS link inside the header file isn't correct.
    echo '    <link rel="stylesheet" type="text/css" href="' .$APP_BASE. '/template/screen.css" media="screen" />';
    $APP_BASE is created using
    $APP_BASE = '//' . $_SERVER['HTTP_HOST'] . rtrim(dirname($_SERVER['PHP_SELF']), '/\\');
    The generated CSS link turns out as:
    <link rel="stylesheet" type="text/css" href="//nexus/raw/admin/template/screen.css" media="screen" />
    How do I create these links properly? I can't use "../template/screen.css" because I have a few general files which are in the application root. Using the "../" causes the file path to be in the server root in that case.

    Appreciate the help.
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  • #2
    Senior Coder CFMaBiSmAd's Avatar
    Join Date
    Oct 2006
    Denver, Colorado USA
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    ... the CSS link inside the header file isn't correct.
    You did not actually state what was wrong with that CSS link (other than it should have a http: before the // to make it a properly formed, fully specified, URL.)

    But, I will guess that because dirname($_SERVER['PHP_SELF']) is the path to the file that is including the header and that this changes depending on which file is including the header file, that you are getting a varying path to the css file?

    Don't use the $_SERVER['PHP_SELF'] in this situation. If you are trying to make an absolute URL to the css file, just do that -
    PHP Code:
    $APP_BASE 'http://' $_SERVER['HTTP_HOST'];
    '<link rel="stylesheet" type="text/css" href="' .$APP_BASE'/your_actual_full_path_here_to_the/template/screen.css" media="screen" />'
    Also, because files that the browser fetches directly (images, external javascript, external css...) use the / = "domain root" rule, you can also just use -
    PHP Code:
    echo '<link rel="stylesheet" type="text/css" href="/your_actual_full_path_here_to_the/template/screen.css" media="screen" />'
    Edit: Also, take a look at the __FILE__ magic constant - http://www.php.net/manual/en/languag...predefined.php if you want to get the path to the included file instead of the file that is doing the including.
    Last edited by CFMaBiSmAd; 11-16-2007 at 06:41 AM. Reason: add magic constant info
    If you are learning PHP, developing PHP code, or debugging PHP code, do yourself a favor and check your web server log for errors and/or turn on full PHP error reporting in php.ini or in a .htaccess file to get PHP to help you.

  • #3
    Regular Coder
    Join Date
    Apr 2003
    Montreal, QC
    Thanked 2 Times in 2 Posts
    I think you have 2 options:

    1) Add more to the href that calls the CSS file. I was going to say to use $_SERVER['HTTP_HOST'] - but you are already. However, it doesn't appear to be creating any output. You'll need to figure out why - I have no idea at this late hour

    2) don't bother putting the domain name - just use a directory path starting with "/" So, if your CSS file is at http://www.example.com/templates/style.css then your link tag should have href="/templates/style.css" and then you may be able to leave PHP right out of it, (this is what I usually do).
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  • #4
    Senior Coder
    Join Date
    Jan 2007
    Thanked 58 Times in 54 Posts
    Or just use the base tag.


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