[wp-hackers] map file path to url in PHP/WordPress

[Dion Hulse (dd32)]

If you inserted the die() within the if(file_exists() check, that'll be why,
as that filepath is wrong, WP_PLUGIN_DIR refers to the plugins folder, not
the plugins folder.

The better way would be to write that as
  $screen_filepath = dirname(__FILE__) . '/css/screen.css';
if you really want to check for it's existence first.

other than that, it looks fine to me from what I know of it.

2011/10/22 肖晗 <xiaohan2012 at gmail.com>

> Thanks very much, Dion. This is what I want.
>
> But now I have problem with registering the style sheet.
> I did as the Wordpress function references suggest.
> <code>
>
> *add_action*
> ('wp_print_styles','add_pll_style_sheet');
>
> function *add_pll_style_sheet*(){
>    $screen_filepath = WP_PLUGIN_DIR.'/'.'css/screen.css';
>    if(file_exists($screen_filepath)){
>
>        wp_register_style("blueprint_screen",plugins_url('css/screen.css',
> __FILE__));
>        wp_enqueue_style('blueprint_screen');
>    }
> }
>
> </code>
> The *add_pll_style_sheet*() won't execute at all! (I tested it  adding a *
> die*() in the front, but nothing happens)
> And I don't think  the action *wp_print_styles *is wrong, because I did as
> the wordpress reference suggests.
>
> And the context is correct, I think.Because other functions(hooks) are
> executed smoothly, except this one.
>
> Any idea?
>
> 2011/10/22 Dion Hulse (dd32) <wordpress at dd32.id.au>
>
> > If you're referring to the file from within a plugin, you'd use something
> > such as:
> > echo plugins_url('mystyle.css', __FILE__); (The __FILE__ part makes it
> > refer
> > to mystyle.css relative to the current file)
> >
> > If you were refering to a themes file, you'd use something such as:
> > echo get_template_directory_uri() . '/some-style-file.css';
> >
> > On 22 October 2011 12:31, 肖晗 <xiaohan2012 at gmail.com> wrote:
> >
> > > Hi guys,
> > >
> > > I do not know how to map file path to url in PHP/WordPress.
> > >
> > > Suppose my css sheet is in path
> > >
> > > /var/www/wordpress/wp-content/plugins/my-plugin/mystyle.css.
> > >
> > > And suppose my domain is domain.com.
> > >
> > > How can I map the path
> > >
> > > /var/www/wordpress/wp-content/plugins/my-plugin/mystyle.css
> > >
> > > to
> > >
> > > http://domain.com/wordpress/wp-content/plugins/my-plugin/mystyle.css
> > >
> > > Any useful functions and Wordpress API will be appreciated
> > > _______________________________________________
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