if file_exists in PHP issue wordpress

Question

I am attempting to create code that checks if an image exists on my site and if not shows a default image. In one case I know the file exists and can get it to link to the file using the variable that I want file_exist to use!

$menuCategories = get_categories( array(
   'child_of' => $whichGrade,));

foreach ( $menuCategories as $menuCategory ) { ?>
   <?php
        $linktoicon = get_bloginfo('template_directory') ."/images/menuicon_".$menuCategory->slug.".png";
        if (file_exists($linktoicon)) {
           $iconref = $menuCategory->slug; 
        }else { 
            $iconref = "default";
        } ?>
           <a href='<?php echo $linktoicon;  ?>'> <?phpvar_dump($iconref); ?></a>
<?php }?>

$linktoicon` is "http://mybritishhelper.com/wp-content/themes/wpex-magtastico/images/menuicon_colours.png"

Thank you.

What is the problem?

Dharam
– Dharam

2016-06-30 23:55:22 +00:00
Commented Jun 30, 2016 at 23:55 — Dharam
– Dharam, Commented Jun 30, 2016 at 23:55

Fred Vollmer · Accepted Answer · 2016-07-01 00:05:11Z

2

PHP's file_exists isn't used with URL's, it's used for paths to files on the server itself. Not a problem. First, we need to get the path to your theme's template directory:

$templateDirectory = get_template_directory();

Assuming that the link you provided is on your own server, the full path to your image is

$pathToImage = $templateDirectory . '/images/menuicon_colours.png';

We can now check if your image exists with the following

if (file_exists($pathToImage)) {
// Do stuff
}

Hope this helps. For reference, see the docs for file_exists and get_template_directory()

answered Jul 1, 2016 at 0:05

Fred Vollmer

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