PHP WordPress file_exists not working

Question

I'm working on a plugin and trying to embed something if the file/folder exists. This perfectly works in php but not within WP. Any help would be appreciated. This code is in the admin area under the plugin's setting page. And yes, I'm sure the path to the folder is correct.

$filename = plugins_url('../admin_side/webmailing/install/', __FILE__);

if (file_exists($filename)) { 

echo 'something';

 else {

echo 'something else';

}

Well, clearly it's not or it'd be working :) have you echo'd the contents to check? — Dan Smith
– Dan Smith, Commented Mar 20, 2015 at 12:26

Nathan Dawson · Accepted Answer · 2015-03-20 14:32:19Z

2

file_exists expects a file path but you're passing it a URL.

Change:

$filename = plugins_url('../admin_side/webmailing/install/', __FILE__);

To:

$filename = plugin_dir_path( __FILE__ ) . 'admin_side/webmailing/install/';

answered Mar 20, 2015 at 14:32

Nathan Dawson

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2 Comments

Spechal Over a year ago

No it doesn't. You can use relative or network paths. See php.net/file_exists

Nathan Dawson Over a year ago

Slight mixup of terminology on my part but the answer remains valid. The issue is because the user is passing in a URL and not a file path. The code provided resolves the issue.

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